Techno

The project of the reusable Russian missile Krylo-SV was approved

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The Russian Academy of Sciences approved the development direction of the new generation of Russian launch vehicles proposed by Roscosmos State Corporation. This is stated in the decision of the Council on Outer Space, which was signed by President of the Russian Academy of Sciences Alexander Sergeev.


To approve the main directions of development of launch vehicles, including, in addition to those already developed, high-tech launch vehicles of a new generation of various classes (ultra-light, light, medium, heavy, heavy-duty, super-heavy), including using promising fuels, materials, reusable stages and other design solutions

- reported in the document, a copy of which is available RIA News".

We remind you that currently only SpaceX, the head of which is Elon Musk, has reusable stages for space launches. Before this, the head of Roskosmos Dmitry Rogozin and the aforementioned Mask managed to exchange critical Statementsthat dealt with competition in launching. Musk then drew attention to the fact that the problem of the Russians is that they have all single-use missiles.

Ранее сообщалосьthat the first flight tests of the new Russian reusable cruise missile ultralight class “Wing-SV”, a smaller version of the Baikal missile, may take place already in 2020. It is known that the development of a promising rocket is engaged in the "Experimental Engineering Plant named after V. M. Myasishchev."

It must be added that Roscosmos has a whole line of different launch vehicles, both manufactured and developed, of various classes. In the light class - “Soyuz-2.1v” and “Angara-A1.2”, on average - “Soyuz-2”, is being developed - “Soyuz-5” and development is planned - “Soyuz-6”. In the heavy class - "Proton-M" and "Angara-A5", increased payload is planned - "Angara-A5V", and in the superheavy class - "Yenisei" and "Don". In addition, a desire was expressed to create launch vehicles flying on methane.
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  1. Pivander Offline
    Pivander (Alex) 3 May 2020 15: 54
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    Yes, these are all fairy tales. Like the Crimean bridge. Sobchak with Navalny will confirm.
    A complaint
    1. Alexei Ushakov Offline
      Alexei Ushakov (Alexey Ushakov) 3 May 2020 17: 10
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      And if they do. That for one such missile could feed a thousand and one grandmother and cat. And on YouTube, Dud will shoot a 6-hour film interview with this cat and grandmothers.
      A complaint
  2. 123 Offline
    123 (123) 3 May 2020 16: 25
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    It was previously reported that the first flight tests of the new Russian reusable cruise missile ultralight class “Wing-SV”, a smaller version of the Baikal missile, may take place in 2020.

    As I understand it, the Baikal project is closed, the landing pattern is the same, but I'm not sure that this is its mini copy. It’s good that they clarified that it was planned to test a reduced prototype, the first flight of a real rocket in 2023.
    And then a little later they will write that they experienced a reduced prototype, and an ecstatic groan will sound out over the ground of the Russian, they say, again storytellers, but they promised ....
    A complaint
    1. Monster_Fat Offline
      Monster_Fat (What's the difference) 3 May 2020 17: 35
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      Naturally - these are fairy tales. The main thing is to get financing, and then: “either donkey, or bastards ....” Russian, space “breakthroughs” of recent years cause only laughter. By the way, I forget to ask everyone - did they find "drillers", or are they still looking? laughing
      A complaint
      1. 123 Offline
        123 (123) 3 May 2020 18: 55
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        Donkey ... padishah .... take your companion first, otherwise your “Lybid” has already got it, 10 years at Rogozin’s in the barn. Then we will understand what makes you laugh. winked
        A complaint
      2. Rum rum Offline
        Rum rum (Rum rum) 3 May 2020 19: 46
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        This project of returnable stages is more likely to actually launch missiles than Maskov’s (from the word Ilon). Those have no chance at all.
        A complaint
        1. Cyril Offline
          Cyril (Kirill) 3 May 2020 21: 17
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          Those have no chance at all.

          Maskavian rockets have long been releasing cargo into orbit.
          A complaint
          1. Rum rum Offline
            Rum rum (Rum rum) 3 May 2020 22: 27
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            Dear, did you study at school?
            To return 1 step to the ass, you need:
            To take fuel into flight, to return the stage is the growth of useless mass (weaning it from the useful one).
            To take extra fuel, you won’t believe it - you still need fuel (again minus the payload).
            But that is not all. Return to the ass on the engine increases the thermodynamic loads on this engine by about 2,5 times (figures are not accurate), thereby greatly reducing its resource.
            As I understand it, the USAM Challenger was not enough with Voyager.

            Based on all this, you can understand for yourself what real effectiveness these devices have.
            Or do you believe in a perpetual motion machine?
            A complaint
            1. Cyril Offline
              Cyril (Kirill) 3 May 2020 22: 49
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              Dear, did you study at school?

              I am. And you?

              To return 1 step to the ass, you need:
              To take fuel into flight, to return the stage is the growth of useless mass (weaning it from the useful one).
              To take extra fuel, you won’t believe it - you still need fuel (again minus the payload).

              To return the stage in an airplane, you need:

              - take in flight the landing gear, wing, tail, additional (in addition to the main rocket engine) air-jet engine for landing and fuel for its operation.

              - To take additional fuel for the WFD, you will not believe it (c) - you still need fuel.

              But that is not all. Return to the ass on the engine increases the thermodynamic loads on this engine by about 2,5 times (figures are not accurate), thereby greatly reducing its resource.

              The numbers on your ceiling are taken, not "inaccurate." When returning the Falcon-9 stage, only 1 engine out of 9 installed on it is used for braking. Moreover, it “ignites” only two times during landing for a couple of seconds. There is no increase in loads by 2,5 times there.

              As I understand it, the USAM Challenger was not enough with Voyager.

              As I understand it, in space technology you are not an ass. Firstly, the Challenger was landing just according to the airplane scheme, and not on its engines. Secondly, Voyager is not a Shuttle, but a research interplanetary probe, which was successfully launched in the 70s and is currently located on the border of the Solar System.

              Based on all this, you can understand for yourself what real effectiveness these devices have.

              Good performance, proven by repeated, repeated (and successful) launches of the Falcon-9.
              A complaint
              1. Cyril Offline
                Cyril (Kirill) 3 May 2020 23: 15
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                When returning the Falcon-9 stage, only 1 engine out of 9 installed on it is used for braking. Moreover, it “ignites” only two times during landing for a couple of seconds. There is no increase in loads by 2,5 times there.

                Here I lied. During the landing, the engines are switched on 3 times:

                - the first time to turn the stage (3 engines out of 9, duration 30–40 seconds)

                - the second time when entering the atmosphere (3 engines out of 9, duration 25-30 seconds);

                - the third time immediately before landing for final braking (1 engine, duration 30 seconds).

                The payload mass loss of the Falcon-9 in the return version is 30–40%. For the vast majority of launches, these numbers are quite acceptable.
                A complaint
              2. Rum rum Offline
                Rum rum (Rum rum) 3 May 2020 23: 45
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                That is, you say that the heavy step falls anyhow, from a height of several tens of kilometers and is aligned strictly vertically, the speed is guided and extinguished, and this is twice in a couple of seconds?

                Do not count for work, count: mass, acceleration of gravity, height and estimate the brake impulse. Not for me, for myself, I give you a reason to think about what you read on TV and see on the fence (this is a joke, do not be offended).

                Ok, ate, with the Voyager really a mistake, it was Columbia.
                But the fact is that they were reusable, and exploded at the start. Engines experience such loads that no one can predict that there will fail during repeated starts.
                A complaint
                1. Rum rum Offline
                  Rum rum (Rum rum) 4 May 2020 00: 09
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                  Here

                  At an altitude of 20000 m
                  ground speed 626.3114 m / s
                  weight is 1000 kg.
                  energy 196132984.88498002 J
                  A complaint
                  1. Cyril Offline
                    Cyril (Kirill) 4 May 2020 01: 25
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                    Here

                    Well done. Now, calculate all this for the Falcon-9 rocket, taking into account the trajectory of its landing, 3 times turning on the engines for braking, the total thrust of 3 Merlin engines, aerodynamic braking, and a bunch of other factors affecting this process.

                    Calculate - show.
                    A complaint
                2. Cyril Offline
                  Cyril (Kirill) 4 May 2020 00: 22
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                  That is, you say that the heavy step falls anyhow, from a height of several tens of kilometers and is aligned strictly vertically, the speed is guided and extinguished, and this is twice in a couple of seconds?

                  Nearly. I made a mistake there with the number of inclusions and the duration of the engines during the descent. I corrected myself there a little higher, you can read.

                  But actually, yes - the Falcon-9 landing profile on most of the trajectory is a controlled fall. Engines (and not all 9, but only 3) are switched on only three times (when undocking with the second stage, when entering the atmosphere and immediately before landing) for braking on key sections of the trajectory. Correction of the trajectory of falling is carried out by trellised rudders.

                  Do not count for work, count: mass, acceleration of gravity, height and estimate the brake impulse. Not for me, for myself, I give you an occasion to reflect on what you read on TV and see on the fence.

                  I do not read, I watch live broadcasts of these launches and landings. The steps are returning quite intact.

                  But the fact is that they were reusable, and exploded at the start. Engines experience such loads that no one can predict that there will fail during repeated starts.

                  1. At the start, only the Challenger exploded. Columbia collapsed as it entered the atmosphere.

                  2. Both disasters were not related to engines. The Challenger exploded due to the destruction of the o-ring at the junction of the side boosters and the fuel tank. By the way, these o-rings were a disposable element that was replaced before each start. And Columbia collapsed during the descent due to the fact that at start, a piece of thermal insulation that broke away from the tank (incidentally, also replaced each time) hit the wing. During the descent, due to high loads at the site of this damage, the wing began to collapse, which led to disaster.

                  In other words, in both cases, the disaster was not caused by the shuttle's reusability. For reference, the same "Colombia" before the disaster successfully and without problems flew into orbit and returned 27 times and was operated for 21 years (from 1981 to 2003).
                  A complaint
                  1. Rum rum Offline
                    Rum rum (Rum rum) 4 May 2020 00: 39
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                    I once went to a movie on Avatar. There were rocks in the air. And the Americans flew to the moon. But for some reason, their satellites are launched on modernized engines, from the Soviet lunar program.
                    A complaint
                    1. Cyril Offline
                      Cyril (Kirill) 4 May 2020 00: 45
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                      I once went to the cinema to the "author". There were rocks in the air.

                      An argument like "they can take anything out there" does not roll. Firstly, because it’s broadcast. Secondly, because not only the company itself captures the SpaceX missile landings on the camera, but also heaps of enthusiasts who are on duty at every landing and landing at landing sites and even at landing barges (yes, at sea). And thirdly, because this "argument" is based solely on your speculation, and not on the facts. With the same success, I can say that Russia does not launch rockets into space, but takes everything off at the Roskosmos studio.
                      A complaint
                    2. Cyril Offline
                      Cyril (Kirill) 4 May 2020 01: 08
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                      And the Americans flew to the moon.

                      All right. Fly to the moon, 6 times.

                      But for some reason, their satellites are launched on modernized engines, from the Soviet lunar program.

                      To launch their satellites and AMS at the moment, Americans are using the following launch vehicles:

                      - Falcon-9 - flies on American engines.

                      - Falcon Heavy - flies on American engines.

                      - Atlas-5 - flies on Russian engines (1 step).

                      - Delta-4 - flies on American engines.

                      - "Antares" - flies on Russian engines (1 step).

                      - Delta-2 (American engines),

                      - "Minotaur" (American engines).

                      In total, out of 6 operational missiles, only 2 fly on Russian engines.

                      Well and in addition: almost all modules of the ISS Russian segment (except one) are put into orbit by Shuttles. But for some reason this does not bother you.
                      A complaint
                      1. Cyril Offline
                        Cyril (Kirill) 4 May 2020 01: 36
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                        Well, in addition, almost all the modules of the ISS Russian segment (except one) were put into orbit by the Shuttles. But for some reason this does not bother you.

                        Sorry, wrong again. Just almost all of the Russian modules were launched by Russia itself, only one of them was by the American Shuttle.
                        A complaint
                      2. Rum rum Offline
                        Rum rum (Rum rum) 4 May 2020 02: 05
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                        OK OK. The Americans have the best and most economical missiles in the world. You won. good
                        A complaint
                      3. Cyril Offline
                        Cyril (Kirill) 4 May 2020 02: 09
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                        No, not so.
                        SpaceX (not Americans, as such) has the most economical rockets in the world at the moment.
                        If someone else does it more economically, it means that someone will have the most economics.
                        A complaint
              3. 123 Offline
                123 (123) 4 May 2020 12: 43
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                I do not read, I watch live broadcasts of these launches and landings. The steps are returning quite intact.

                Did you watch it on March 18? Emergency shutdown of one of the engines. It was fortunate that this happened just before the separation of the second stage. As I understand it, this is a failed record (5 returns of the first stage). She will not fly into space anymore. So for now, the rocket can be called a maximum of four times, and most likely 2-3 times. This is not very different from a disposable one. Cost recovery is extremely doubtful. The same "Wing-SV" is scheduled to run up to 50 times.
                A complaint
                1. Cyril Offline
                  Cyril (Kirill) 4 May 2020 15: 29
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                  Did you watch it on March 18? Emergency shutdown of one of the engines.

                  AND? Estimate, airplane engines designed for 1000 flights break down.

                  She will not fly into space anymore. So for now, the rocket can be called a maximum of four times, and most likely 2-3 times. This is not very different from a disposable one.

                  Four-time is already reusable. 4 launches at one stage give quite a tangible benefit.

                  The same "Wing-SV" is scheduled to run up to 50 times

                  So I don’t mind - it’s very good if that is so.
                  A complaint
                  1. isofat Offline
                    isofat (Sergei) 4 May 2020 15: 34
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                    Quote: Cyril
                    Four-time is already reusable

                    Four-time is low-cost or four times a day, without show-offs.
                    A complaint
                  2. Cyril Offline
                    Cyril (Kirill) 4 May 2020 15: 36
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                    Four-time is low-cost.

                    May be. However, 4-fold savings compared to disposable ones.
                    A complaint
                  3. isofat Offline
                    isofat (Sergei) 4 May 2020 15: 47
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                    Quote: Cyril
                    However, 4-fold savings compared to disposable ones.

                    Cyril, you have already proven on the site that this is not entirely true, you continue to argue.
                    A complaint
                  4. Cyril Offline
                    Cyril (Kirill) 4 May 2020 15: 54
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                    Cyril, you have already proved on the site that this is not entirely true, you continue to argue.

                    Who has proven? Where? Were there any calculations and calculations?
                    A complaint
                  5. isofat Offline
                    isofat (Sergei) 4 May 2020 16: 24
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                    Quote: Cyril
                    Who has proven? Where? Were there any calculations and calculations?

                    Cyril, in your dispute with yesterday Pom pom - He was more convincing.

                    To prove that a magician cannot cut an assistant and she would still be alive - do you need calculations?
                    A complaint
                  6. Cyril Offline
                    Cyril (Kirill) 4 May 2020 16: 29
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                    Cyril, in your argument with Pom Pom yesterday - he was more convincing.

                    And what was he more convincing of? By maximizing the simplified calculation of momentum, ignoring a bunch of factors affecting the rocket at the time of landing?

                    To prove that a magician cannot cut an assistant and she would still be alive - do you need calculations?

                    In a science called “logic” there is such a mistake as a “false analogy”. Check it out - it’s just about the example you gave.
                    A complaint
                  7. isofat Offline
                    isofat (Sergei) 4 May 2020 16: 44
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                    Cyril. The analogy is not a proof and does not prove anything. It only helps to understand the speaker’s thought. Too bad you don't know that.
                    PS There is such a Russian proverb - I heard a jingle, but does not know where he is.
                    A complaint
                  8. Cyril Offline
                    Cyril (Kirill) 4 May 2020 17: 52
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                    The analogy is not a proof and does not prove anything. It only helps to understand the speaker’s thought. Too bad you don't know that.

                    Correct analogy is exactly a tool

                    proof of

                    in logic and theory of argumentation. But it is the correct analogy.

                    https://lawbook.online/page/logikap/ist/ist-18--idz-ax272--nf-40.html

                    The analogy is correct if the compared objects or phenomena have great similarities. For example, an alkali metal potassium during a reaction with water releases a large amount of thermal energy. Consequently, the alkali metal sodium, which is very similar to potassium, will also react violently with water.

                    Actually, scientific modeling is precisely based on the method of analogy. A model is an analogue of an object or phenomenon.

                    An incorrect analogy is when two objects or phenomena are compared that do not have any similarity or the percentage of this similarity is very small. I think it’s not necessary to clarify that there is very, very little in common between the process of launching the launch vehicle and the cutting of an assistant by a magician.

                    So, an incorrect analogy is either a mistake (if it is given unintentionally), or a demagogic device (if it is given intentionally).

                    There is such a Russian proverb - I heard a jingle and don’t know where he is.

                    And she's just about you.
                    A complaint
                  9. isofat Offline
                    isofat (Sergei) 4 May 2020 18: 01
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                    Cyril, do not be offended, it’s not my fault that you have problems with logic.
                    PS You are a good advertising agent for the American way of life, but this level is not enough to discuss serious things. smile
                    A complaint
                  10. Cyril Offline
                    Cyril (Kirill) 4 May 2020 18: 04
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                    do not be offended, it’s not my fault that you have problems with logic.

                    I just don’t have them - it’s you who give incorrect analogies, not me.

                    You are a good advertising agent for the American lifestyle,

                    I’m not promoting the "American lifestyle" anywhere. I am talking about landing systems of reusable missiles and only about them.

                    But you are a demagogue. Moreover, a bad demagogue, with too clumsy methods.
                    A complaint
                  11. isofat Offline
                    isofat (Sergei) 4 May 2020 18: 11
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                    Quote: Cyril
                    ... Moreover, a bad demagogue ...

                    Yes, I'm a demagogue bad! I do not know how, sorry. smile
                    PS For Logic - 2 with a minus!
                    A complaint
                  12. Cyril Offline
                    Cyril (Kirill) 4 May 2020 18: 13
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                    Yes, I'm a demagogue bad! I do not know how, sorry.

                    So why then take it?

                    For Logic - 2 with a minus!

                    Yes, your false analogies deserve such an assessment. Self-criticism is the first step towards correction. Act in the same spirit.
                    A complaint
  3. 123 Offline
    123 (123) 4 May 2020 15: 51
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    Four-time is already reusable. 4 launches at one stage give quite a tangible benefit.

    I don’t argue, only when the payback threshold is reached is unclear. I came across Russian estimates, they say that about 10 launches are needed. The reliability of the estimates is doubtful, but I have not seen any data from the opposite side. I doubt that 4 starts are enough for this.
    A complaint
  4. Cyril Offline
    Cyril (Kirill) 4 May 2020 15: 59
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    I came across Russian estimates, they say that about 10 launches are needed.

    Just for 10 or more launches without inter-flight maintenance and designed Falcon-9.
    A complaint
  5. 123 Offline
    123 (123) 4 May 2020 16: 09
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    Just for 10 or more launches without inter-flight maintenance and designed Falcon-9

    The question remains, after what flight does the payback threshold come and whether it is reached.
    A complaint
  6. Cyril Offline
    Cyril (Kirill) 4 May 2020 16: 49
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    This is a question, of course.
    A complaint
  7. cmonman Offline
    cmonman (Garik Mokin) 5 May 2020 02: 31
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    From Wiki (Google translations):

    Making the first-stage booster makes up about 60% of the starting price of one Falcon 9 (and three of them more than 80% of the starting price of Falcon Heavy), which forced SpaceX to develop a program designed for recovery and reuse. of these boosters to significantly reduce startup costs.
    “... first-stage Falcon 9 launch vehicles were landed and rebuilt 51 times out of 61 attempts, including synchronized recovery of side boosters in the Falcon Heavy test flight, Arabsat-6A and STP-2 missions. One of the three central Falcon Heavy boosters landed softly, but was seriously damaged in transit.
    “... A total of 23 rebuilt boosters were repaired and subsequently launched a second time, including several boosters with three or four missions and one with five missions. SpaceX deliberately limited the Block 3 and Block 4 boosters to only two missions each, but the company expects Block 5 versions to complete 10 flights each without major repairs. ”
    “Block 5 is the last iteration of the Falcon 9 and Falcon Heavy boosters. Changes include a stronger heat shield, engines with improved performance, new carbon composite sections (landing struts, engine sections, raceways, RCS thrusters and intermediate steps), retractable landing legs, fins from a titanium grill and other additions that simplify restoration and allow easier reuse. SpaceX claims that block 5 launch vehicle can fly 10 or more times. As of March 2020, not one booster rocket flew more than five times.

    https://en.wikipedia.org/wiki/List_of_Falcon_9_first-stage_boosters

    If you open this footnote, then in the table
    “Falcon 9 block 5 first-stage boosters” in the “Turnaround Time” column (recovery time to the next flight) is m (month) and d (days) - in how much time the first stage was prepared and took off again (or 1 / 3/4). I suspect that this preparation is cheaper than the cost of a new stage.
    A complaint
  8. 123 Offline
    123 (123) 5 May 2020 09: 42
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    All this is wonderful, but to assess the economic efficiency it would be nice to know the amount of costs for the maintenance of ground infrastructure, maintenance and repair of missiles. In addition, if I am not mistaken, 10 re-launches were planned. So far, only 5 has turned out, as a result of a malfunction, engine shutdown, unsuccessful landing, it is no longer suitable for a 6th flight. The company has not yet reached its calculated indicators. In general, let citizen Musk recount his “boosters” himself, success in this noble cause of space exploration, if anything, I’m not ironic winked
    A complaint
  • Cyril Offline
    Cyril (Kirill) 3 May 2020 21: 46
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    It’s good that they clarified that it was planned to test the reduced prototype

    Wing-SV is not a prototype. It is in this size and will be operated.
    A complaint
    1. 123 Offline
      123 (123) 4 May 2020 12: 46
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      Wing-SV is not a prototype. It is in this size and will be operated.

      That's for sure? I saw something like this:

      On February 28, the Advanced Research Foundation approved the start of work to create a flight stage demonstrator. It will have a reduced size (about a third of the full), and it will also be tested not with a rocket, but with a drop from an airplane. It is expected that tests of the reduced prototype can begin in 2020, and a full-fledged first flight of the rocket with a reusable stage will take place in 2023. She will be able to display in a solar-synchronous orbit up to 600 kilograms.
      A complaint
      1. Cyril Offline
        Cyril (Kirill) 4 May 2020 15: 38
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        And, right - I didn’t figure it out to the end. I meant that Krylo-SV itself is not a smaller prototype of Baikal - it will be an independent project based on Baikal.
        A complaint
  • Observer2014 Offline
    Observer2014 4 May 2020 17: 59
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    As I understand it, the Baikal project is closed

    laughing Wow. You. You know that. Or rather, remember? Already commendable. yes The whole joke is that this is just according to the author of the project! bully And the same Baikal was a project. Do you agree with me? And there, in the bins of the indefatigable imagination of the authors of all kinds of ideas! In tyrnet web! Horror as much. wink
    A complaint
  • Cyril Offline
    Cyril (Kirill) 3 May 2020 21: 17
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    development of Russian launch vehicles

    Regarding the content. Aircraft design is likely to be less optimal than vertical landing, but still definitely better than losing one-time steps all the time. Definitely a step forward.
    A complaint
    1. 123 Offline
      123 (123) 4 May 2020 12: 48
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      Regarding the content. Aircraft design is likely to be less optimal than vertical landing, but still definitely better than losing one-time steps all the time. Definitely a step forward.

      The flight scheme is designed for 50 flights, Musk has not yet mastered more than four successful returns. Payback is extremely doubtful.
      A complaint
      1. Cyril Offline
        Cyril (Kirill) 4 May 2020 15: 33
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        The flight scheme is designed for 50 flights

        Designed - this is not the same as flying.

        Musk has not yet mastered more than four successful returns.

        Well, the missiles are not decommissioned either.
        A complaint
        1. 123 Offline
          123 (123) 4 May 2020 15: 56
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          Designed - this is not the same as flying.

          Конечно. yes I'm talking about economic calculations, for this system they plan 50 flights. From the second launch, no such system will pay off.

          Well, the missiles are not decommissioned either.

          This one just flew away. It was her fifth and final flight.

          They could not return the stage of this mission to the floating platform Of Course I Still Love You in the Atlantic Ocean.

          https://news.liga.net/world/video/mask-vpervye-zapuskaet-raketu
          A complaint
          1. Cyril Offline
            Cyril (Kirill) 4 May 2020 16: 03
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            This one just flew away. It was her fifth and final flight.

            So this is not the only first step in SpaceX. If they remember me, they have at least 4 steps that have already flown 4 times.
            A complaint
            1. 123 Offline
              123 (123) 4 May 2020 16: 11
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              So this is not the only first step in SpaceX. If they remember me, they have at least 4 steps that have already flown 4 times.

              As it flies 10 times, it will be possible to talk about the success of the program. While she is in doubt.
              A complaint
              1. Cyril Offline
                Cyril (Kirill) 4 May 2020 16: 18
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                Compared to single-use missiles, this success already exists. Whether the SpaceX landing pattern will be more successful in comparison with the landing pattern selected for the “Wing” can be known only after the latter is put into operation.

                But even after its commissioning it will be possible to compare only with reservations. Do not forget that the Flacon-9 is a heavy-class rocket that launches up to 22 tons of cargo at the NOO. "Wing-SV" - a light class rocket. The question whether this scheme can be advantageously applied on a heavy-class carrier is a big question.
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                1. 123 Offline
                  123 (123) 4 May 2020 16: 34
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                  Compared to single-use missiles, this success already exists. Whether the SpaceX landing pattern will be more successful in comparison with the landing pattern selected for the “Wing” can be known only after the latter is put into operation.

                  You can talk about success after breaking the breakeven threshold. If the program works and there is an economic effect, then yes. But while I do not see such data. As for Krylo-SV, I don’t oppose them, I just gave as an example how many flights the device is designed for. Obviously, this scheme is more expensive than Flacon, but the life is longer.

                  But even after its commissioning it will be possible to compare only with reservations. Do not forget that the Flacon-9 is a heavy-class rocket that launches up to 22 tons of cargo at the NOO. "Wing-SV" - a light class rocket. The question whether this scheme can be advantageously applied on a heavy-class carrier is a big question.

                  Here I have some doubts. I do not exclude the possibility of using several devices at the same time, as on Protons, the greater the load, the more accelerating blocks. But talking about it is premature. We’ll wait a couple of years.
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                  1. Cyril Offline
                    Cyril (Kirill) 4 May 2020 17: 36
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                    If the program works and there is an economic effect, then yes. But while I do not see such data.

                    Here I have nothing to cover, that's right - there is no open and accurate data. Although I doubt that with constant losses the company would successfully launch its missiles within 10 years, and the number of launches is growing steadily. It could be attributed to government orders and frenzied foreign investments, only we have another example - Orbital ATK, which generally completely sat on government orders, but eventually accumulated debts, went bankrupt and was bought by Northrop / Grumman. There are no data on SpaceX debts, the company management also denies them. There are no special reasons not to trust them either. You can also look at the Boeing with their Delta-4 rocket and at the ULA with their Atlas-5. Despite government orders and considerable investments, the number of launches on these missiles remains stably low, and the share of commercial demand for them is constantly decreasing.

                    Here I have some doubts. I do not exclude the possibility of using several devices at the same time, as on Protons, the greater the load, the more accelerating blocks.

                    They plan to use Krylo-SV, including as a booster block for medium and heavy missiles. But there are 2 problems here:

                    If you look at the design of such missiles, the booster blocks are attached to the second stage, which is much larger and remains disposable.

                    The second problem is that by increasing the number of booster blocks, the number of wings, tail units, auxiliary engines (and fuel to them), and the chassis also automatically increase.

                    In other words, to land Falcon after flying into a higher orbit or launch a heavier load, you just need to increase the amount of fuel on Falcon, and in the case of missiles with the “Wing”, additional wings, landing gear, engines, and tail feathers will have to be taken as an acceleration block.

                    But talking about it is premature. We’ll wait a couple of years.

                    I agree.
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                    1. 123 Offline
                      123 (123) 4 May 2020 18: 57
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                      Here I have nothing to cover, that's right - there is no open and accurate data. Although I doubt that with constant losses the company would successfully launch its missiles within 10 years, and the number of launches is growing steadily.

                      Who knows, maybe they are not unprofitable, but I doubt that the profits are huge. The increase in the number of launches is quite explainable; launches from Russia were partially “redirected” there. More series, less price, this is how the whole industry works. Accordingly, the price fell, and the remaining "doubters" reached out. Mr. Trump could very well help customers make the right choice; he likes to accept interesting laws. This fits well with his industry return program. And to say that you represent a great space power and for a decade to send your astronauts on foreign rockets ..... looks rather unconvincing. no

                      It could be attributed to government orders and frenzied foreign investments, only we have another example - Orbital ATK, which generally completely sat on government orders, but eventually accumulated debts, went bankrupt and was bought by Northrop / Grumman.

                      It may very well be that Mask is more effective than Orbital ATK. He did not have such expenses for the creation and maintenance of infrastructure. As far as I remember, a space center with a control center was provided to them. The engine, too, was not done from scratch. Creating the rocket itself is not such a supernatural task. In general, he made the most of the existing “backlog”, everything that was created before him. The same trellised, if not mistaken, is still Soviet development, I don’t remember the name of the designer, I need to look for it. And Orbital ATK has become fat on state orders, in the absence of competition, companies become lazy, and a stagnation of thinking appears. Why do new things if everything works and makes a profit? Perhaps, for the same reason, Baikal was closed.

                      Wing-SV "and plan to use, including - as a booster for medium and heavy missiles. But there are 2 problems:
                      If you look at the design of such missiles, the booster blocks are attached to the second stage, which is much larger and remains disposable.
                      The second problem is that by increasing the number of booster blocks, the number of wings, tail units, auxiliary engines (and fuel to them), and the chassis also automatically increase.

                      The second steps are now disposable. In addition, we do not yet know what they will be attached to. I see no reason to say that this will not be a fully returned device. Maybe not right away, but the prospect is very real.
                      Weight from the chassis and other things, of course, is important, but as I understand it, the payback is supposed to be achieved through significantly longer use. Musk, speaking of efficiency, cited an airplane as an example, but he kept silent that airplanes have been flying for decades, and do not pay off in 2-3 flights. Perhaps there is a similar logic. It’s difficult to judge, there is practically no data for analysis. These are all assumptions.

                      In other words, to land Falcon after flying into a higher orbit or to place a heavier load on Falcon, you just need to increase the amount of fuel, and in the case of missiles with the “Wing” you will have to take additional wings, landing gear, engines, and tail.

                      Not quite so, the tank is not dimensionless, it will not work infinitely to increase the amount of fuel. I don’t think that they are flying away half-empty right now, I think the “reserve” is not so big, if any. As for the weight of the “tails, wings”, if they are supposed to be used for a long time, it is quite possible to use composite materials, although they are more expensive, but the gain in weight is obvious. Again, these are all assumptions.
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                      1. Cyril Offline
                        Cyril (Kirill) 4 May 2020 20: 29
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                        Who knows, maybe they are not unprofitable, but I doubt that the profits are huge.

                        Nevertheless, they have money both for developing Falcon Heavy, and for developing Starship with BFR, and for Starlink (as far as I know, satellites are designed and manufactured by SpaceX itself). All these projects require money, and considerable money. Moreover, it is unlikely that anyone other than SpaceX itself invested a lot of money in the same Falcon Heavy or in the development of Starship with BFR - these are very specific projects.

                        Mr. Trump could very well help customers make the right choice; he likes to accept interesting laws.

                        Well, I have no evidence of administrative pressure from the US government on customers. In addition, the percentage of US customers of the total number of commercial customers SpaceX is not so great.

                        It may very well be that Mask is more effective than Orbital ATK. He did not have such expenses for the creation and maintenance of infrastructure. As far as I remember, a space center with a control center was provided to them. The engine, too, was not done from scratch. Creating the rocket itself is not such a supernatural task. In general, he made the most of the existing “backlog”, everything that was created before him. The same trellised, if not mistaken, is still Soviet development, I don’t remember the name of the designer, I need to look for it.

                        Although they provided launch pads, SpaceX uses them for rent and, in addition, rebuilt them under its own media. ATK’s orbital also did not build its launch sites (although I could be wrong). Orbital also did not develop engines itself (though not completely by itself). As for the use of SpaceX developments - this does not contradict the efficiency and profitability. On the contrary, the competent use of existing solutions (the same lattice rudders) in addition to their own works on profitability. Less expense means more revenue.

                        The second steps are now disposable. In addition, we do not yet know what they will be attached to.

                        But the second stage of the Falcon-9 has only 1 engine and is only 1/5 of the total length of the rocket. And at the link of the heavy “Angara” with the “Wing” as the accelerators, the second (non-returnable) step is a huge tower the size of 1 Falcon-9 step.

                        I see no reason to say that this will not be a fully returned device

                        If we talk specifically about Kryl-SV (namely, the current project), then in the fully returned version (that is, when all or most of the structure is returned) it will be a light class rocket (such an application is provided, yes). But this is an easy class. It is difficult to say how far it is possible to scale the additional equipment for landing (wings, an additional engine, landing gear, tail) on a fully reusable heavy class rocket similar to Falcon-9. Here the Shuttle, putting a little more Falcon into orbit (25 tons versus 22), turned out to be too expensive, although it did not even have an additional landing engine (it was planned from space).

                        Musk, speaking of efficiency, cited an airplane as an example, but he kept silent that airplanes have been flying for decades and do not pay off in 2-3 flights.

                        Good point, but there is one caveat. The cost of flying a passenger liner pays off the revenue from tickets. With rough calculations, the same Watermelon 320 pays off in about 10-12 years of use. Such a duration is due to the fact that users of the aircraft (passengers) are not ready to pay fabulous money for a ticket so that the aircraft pays off quickly. Therefore, air carriers buy several aircraft in different directions, thereby accelerating the payback due to the total effect.
                        In space, the situation is different. Customers are quite ready to shell out a lot of money for delivering goods into orbit. Therefore, the launch operator may need less time (and the number of starts) for his rocket to pay off.

                        Not quite so, the tank is not dimensionless, it will not work infinitely to increase the amount of fuel.

                        And Falcon does not need to increase the volume of his tanks. Their current size is quite enough to bring 98% of the load that exists in the world to both IEO and GPO (GSO). Most satellites, scientific vehicles, space trucks and manned spacecraft weigh in the range of 9-10 tons.
                        This, incidentally, is an important element of the SpaceX business model. The disadvantage of the rocket dynamic landing system is that additional fuel and supporting legs reduce the carrying capacity by 30-40%. That is a fact, yes. That is, in the returned version, the Falcon-9 at the DOE does not take out 22 tons, but about 14-15. However, if we analyze the statistics, on average, in practice, on average, modern rockets of a similar class (American, European, Russian, Chinese) are brought into orbit, then in the vast majority of cases this will be no more than 15 tons.

                        In other words, the overwhelming majority of heavy-class missile launches are “idle” by 30–40%. But while the rest of the missiles are lost in any case, SpaceX saves its stages due to the fuel, which loads these “idle” 30-40%.

                        As for the weight of the “tails, wings” if they are supposed to be used for a long time, it is quite possible to use composite materials, although they are more expensive, but the gain in weight is obvious.

                        As for composites, not everything is very obvious. Yes, they weigh less alloys, but they have problems with resistance to thermal and mechanical loads. By the way, this is exactly why Musk refused to use the composite BFR and Starship cases (as their early projects envisaged) in favor of heavier, but also more stable stainless steel.
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                      2. 123 Offline
                        123 (123) 4 May 2020 22: 05
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                        Nevertheless, they have money both for developing Falcon Heavy, and for developing Starship with BFR, and for Starlink (as far as I know, satellites are designed and manufactured by SpaceX itself). All these projects require money, and considerable money.

                        Quite right, a lot of money is required. Try putting yourself in the place of the Mask. What is your source of funding for km? You make satellites for the Internet, launch and collect payment for use, this is a long time, not so profitable, because in Russia and China you are definitely not welcome, Europeans are also not happy, they themselves are not averse to receiving money for the Internet, who is left? Naturally, except for the USA, Canada, Mexico, suppose all of South America. Who else? Africa? Near East? Australia? The solvency of the Africans is in question, besides there is a strong influence of China. In general, both America, Australia and Arab sheikhs. This is far from the global project covering the whole world. In general, you can gradually develop a project, like a bee, to collect nectar, flying from flower to flower, and the route goes past the beekeeper’s house, and there on the porch there is a budget bucket with honey. A bee will certainly fly to a bucket, it is only a matter of time. Satellites are a bit of a separate issue, but they also require huge costs. Costs of 30-50 billion per year are planned only to replenish the group. They should be competitive, not some whistle-blowers, but world-class technology. Only a few are capable of producing such a technique. There are not many companies like Huawei. This is a huge amount of money and technology available to not many. And then a brilliant Musk appears with his companions from nowhere to come. In general, this is a huge amount of money, and this is beyond the power of most states. Since miracles do not happen, there can only be one source, a budget.

                        Well, I have no evidence of administrative pressure from the US government on customers. In addition, the percentage of US customers of the total number of commercial customers SpaceX is not so great.

                        I have to admit, too, but it fits into the logic of events and corresponds to the style of behavior of the American state system. Try reading a boring document by reference, I don’t know if it is accepted or not, but the appearance of this or a similar document is almost inevitable.

                        https://www.govtrack.us/congress/bills/116/s893/text

                        Although they provided launch pads, SpaceX uses them for rent and, in addition, rebuilt them under its own media. ATK’s orbital also did not build its launch sites (although I could be wrong). Orbital also did not develop engines itself (though not completely by itself). As for the use of SpaceX developments - this does not contradict the efficiency and profitability. On the contrary, the competent use of existing solutions (the same lattice rudders) in addition to their own works on profitability. Less expense means more revenue.

                        It could even be. The company is closed, it does not publish financial activity reports, it remains only to speculate. If you look at the other companies of Mask, there is no notice of the appearance of huge funding that has not come from, Tesla took loans from Chinese banks, Musk himself is in a mortgage, SpaceX is different in this regard, it is there that a "wonderful pot" that issues money. Since I do not believe in miracles, I still have one version. Uncle Sam.

                        But the second stage of the Falcon-9 has only 1 engine and is only 1/5 of the total length of the rocket. And at the link of the heavy “Angara” with the “Wing” as the accelerators, the second (non-returnable) step is a huge tower the size of 1 Falcon-9 step.

                        I am not saying that Wing-SV is better than Falcon-9, it's hard to judge. There is no apparatus itself, it is too early to discuss its advantages or disadvantages. It is only clear that the economy there will be slightly different, designed for a longer service life, respectively, and payback. It will be something between a rocket and an airplane.
                        Until at least a prototype appears in iron, I don’t see the point of delving into the topic. I propose to be patient and just wait.

                        As for composites, not everything is very obvious. Yes, they weigh less alloys, but they have problems with resistance to thermal and mechanical loads. By the way, this is exactly why Musk refused to use the composite BFR and Starship cases (as their early projects envisaged) in favor of heavier, but also more stable stainless steel.

                        As for composites - this is just my assumption, one of the directions that designers can take, which will be the result - it is not clear, maybe there will be engines of different types for different stages, the first more efficient in the atmosphere, the second better suited for work in a vacuum. Maybe cheaper fuel, why don't they fly on gas? It’s just that it will be a device created according to another “ideology”, designed for a longer life, the use of more expensive materials and more complex technical solutions is quite possible.
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                      3. Cyril Offline
                        Cyril (Kirill) 5 May 2020 00: 15
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                        it's long, not so profitable for in Russia and China you are definitely not welcome.

                        Europeans are not happy either

                        they themselves are not averse to receiving money for the Internet, who remains?

                        Nuuu .... very controversial. Due to Starlink being used by the Pentagon? So the GPS satellites are also used by the Pentagon (this is generally a military project) - nevertheless, they are used for navigation both in Europe and in Russia. I think China is also used (although not sure). And this despite the presence of GLONASS and Baidu.

                        In addition, by analyzing the market available to Starlink, you missed India and Southeast Asia (Thailand, Malaysia, Bangladesh, South Korea. Japan, etc.). India alone is not much smaller than China in terms of population.

                        Regarding the satellites themselves. The trick is that they are just very different from typical telecommunications satellites, including in terms of price (down). Firstly, they are designed not for tens, but for only 5 years of use (after the expiration of the satellite’s validity period it is replaced by another). And this means that it uses cheaper electronic filling. Secondly, SpaceX does not plan to display the entire group at once - it will be a more time-consuming process, which, accordingly, “stretches” the costs for it.

                        Therefore, financing from the state is not so unequivocal here. Although, of course, SpaceX will take money from the Pentagon for using Starlink.

                        If you look at the other companies of Mask, there is no notice of the appearance of huge funding that has not come from, Tesla took loans from Chinese banks, Musk himself in a mortgage, SpaceX is different in this regard, it is there that a "wonderful pot" issuing money. Since I do not believe in miracles, I still have one version. Uncle Sam.

                        So Uncle Sam at SpaceX and was - no one denies this. At first, the company really lived off funding from NASA allocated under the COTS and CRS (ISS cargo support) programs. At state launches, the company also generated the necessary reliability statistics for its missiles. And then, in 2015, it entered the market of commercial launches. After that, the share of government orders in the total number of launches decreased, the share of commercial orders increased.

                        On all other points - I agree, it remains only to wait for the launch of Kryla-SV and further developments on this topic. Of course, I also wish this project to be successful.
                        A complaint
                      4. 123 Offline
                        123 (123) 5 May 2020 01: 21
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                        Nuuu .... very controversial. Due to Starlink being used by the Pentagon? So the GPS satellites are also used by the Pentagon (this is generally a military project) - nevertheless, they are used for navigation both in Europe and in Russia. I think China is also used (although not sure). And this despite the presence of GLONASS and Baidu.

                        Not only. Gradually, information is transferred to servers within the country, especially in China. And here again access to everything comes off. Plus this is also a market, they are unlikely to want to give it back. In general, they will not be given frequencies for operation.

                        In addition, by analyzing the market available to Starlink, you missed India and Southeast Asia (Thailand, Malaysia, Bangladesh, South Korea. Japan, etc.). India alone is not much smaller than China in terms of population.

                        That's right, missed yes hurried up, did not finish.

                        Regarding the satellites themselves. The trick is that they are just very different from typical telecommunications satellites, including in terms of price (down). Firstly, they are designed not for tens, but for only 5 years of use (after the expiration of the satellite’s validity period it is replaced by another). And this means that it uses cheaper electronic filling. Secondly, SpaceX does not plan to display the entire group at once - it will be a more time-consuming process, which, accordingly, “stretches” the costs for it.

                        It may very well be, but, firstly, as I understand it, the grouping is still not working, as of February 300 satellites were launched, this is not enough.

                        providing minimum Internet coverage will require 360 ​​satellites, and for the average - 720 devices.

                        http://vesma.today/news/post/13532-ilon-mask-zapustil-v-kosmos

                        The system does not work yet, but its costs are not small, the issue of financing again appears.

                        Therefore, financing from the state is not so unequivocal here. Although, of course, SpaceX will take money from the Pentagon for using Starlink.

                        Of course, not unambiguously, but quite likely. Perhaps indirect, for example, in the form of state guarantees for a loan or something like that. Under the existing financial system, these are almost interest-free loans.

                        So Uncle Sam at SpaceX and was - no one denies this. At first, the company really lived off funding from NASA allocated under the COTS and CRS (ISS cargo support) programs. At state launches, the company also generated the necessary reliability statistics for its missiles. And then, in 2015, it entered the market of commercial launches. After that, the share of government orders in the total number of launches decreased, the share of commercial orders increased.

                        I agree, but I believe that the increase in the number of commercial launches was not without the influence of the state.

                        On all other points - I agree, it remains only to wait for the launch of Kryla-SV and further developments on this topic. Of course, I also wish this project to be successful.

                        Let's hope. hi
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                      5. Cyril Offline
                        Cyril (Kirill) 5 May 2020 23: 35
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                        Gradually, information is transferred to servers within the country, especially in China.

                        So, what does the satellite have to do with it? Satellites are a means of transmitting, not storing information. Data will also be stored on servers

                        Plus this is also a market, they are unlikely to want to give it back. In general, they will not be given frequencies for operation.

                        Why doesn’t this happen with conventional communications satellites? This is also a market with various players, but it seems I have not heard. so that someone puts obstacles to someone.

                        The system does not work yet, but its costs are not small, the issue of financing again appears.

                        The cost of 1 Starlink satellite is approximately 300 thousand dollars. That is, for the production of minimum 360 you need 108 million. For 1 time they launch 60 pieces, that is, to launch the minimum 360 satellites you need 6 launches. The weight of one satellite is 260 kg, therefore, the weight of 60 satellites is 15600 kg (plus the weight of the adapter). The cost of launching 1 kg on the DOE on the returned Falcon-9 is about $ 2000. Accordingly, the cost of launching 60 satellites is 31,2 million. We multiply this number (I remind you that this is a launch for your own needs, so there should be no extra charge) by 6 starts - 187 million. We add the costs of the satellites themselves - we get 287 million.

                        Calculations, of course, are crude, but, like, the amount is more or less correct. And it’s not that it turned out to be big. Mask has a personal capital of $ 37 billion. I think, at least from my own pocket I can pay.
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                      6. 123 Offline
                        123 (123) 6 May 2020 09: 55
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                        So, what does the satellite have to do with it? Satellites are a means of transmitting, not storing information. Data will also be stored on servers.

                        The satellite system is not autonomous. There is a point of interfacing with ground infrastructure. It is wrong to isolate satellites from a common system. And servers in the USA.
                        The result is a stateless communication system. For information security reasons, the mask frequency will not be allocated. Huawei, for example, in the United States is not happy, if you want, read their opinion on the Internet on this subject, than they justify it. Speaking of satellites, the Glonass base station, for example, refused to install in the United States. Do you think SpaceX will be treated differently? I see no reason for this.

                        Why doesn’t this happen with conventional communications satellites? This is also a market with various players, but it seems I have not heard. To someone put obstacles to someone.

                        Many countries have their own satellite communications and television broadcasting groups, who do not have them, use strangers on a commercial basis. He did not delve into the situation with them in detail, respectively, who does not know who puts any obstacles to whom. If there is a specific example, say, which foreign satellites are used for communication and broadcasting to the territory of Russia or China, let's see in more detail. yes

                        About the cost, the payback of satellites and why the Mask needs a large series of launches, look at the link:

                        https://www.popmech.ru/technologies/485382-60-sputnikov-ilona-maska-chto-takoe-globalnyy-internet-i-zachem-on-nuzhen/

                        - in my opinion, quite sensible reasoning. yes I doubt that Mask’s plans to pull this entire market onto itself are causing enormous delight in China and Russia. Here he is not welcome. no
                        A complaint
  • steelmaker Offline
    steelmaker 3 May 2020 21: 22
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    And I wait and hope when the Buran project or something else is resumed. Do not try to copy someone else's. We must create our own and let us copy!
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    1. Cyril Offline
      Cyril (Kirill) 3 May 2020 21: 43
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      Burana project

      The Buran was based on the American Shuttle. An authentic reusable system in the USSR was the “Spiral” - although it remained unrealized.

      We must create our own and let us copy!

      If a competitor has already found the best option, then why not use it? Why reinvent the wheel?
      A complaint
      1. Rum rum Offline
        Rum rum (Rum rum) 3 May 2020 22: 36
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        Optimal, which one?
        A parachute or wing is much more optimal, landing on the ass on the engine. And in the sense of mass saving, and ease of operation.
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        1. Cyril Offline
          Cyril (Kirill) 3 May 2020 22: 58
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          A parachute or wing is much more optimal, landing on the ass on the engine. And in the sense of mass saving and ease of operation.

          I already wrote above - I will write again. For an airplane landing, you need a wing, tail unit, an additional jet engine (and fuel to it), and a landing gear. What kind of "mass saving" are you talking about is not clear.

          For landing "on the ass" you need only additional fuel and support struts.

          As for the parachute landing, it has the following disadvantages:

          - The parachute does not provide a completely soft landing - the step still thumps on the ground at a very decent speed. And the blow is decent there. Shuttle side boosters and amphibious military equipment will confirm.

          - The parachute is very dependent on the wind.

          “The parachute needed to save the first stage of a heavy rocket (to which Falcon-9 belongs) must simply be of enormous size.” Plus, to mitigate the blow, either an air bag or additional brake engines should be attached.

          A complaint
          1. Rum rum Offline
            Rum rum (Rum rum) 3 May 2020 23: 23
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            By airplane step:
            1. Planning (airplane) has already been canceled?
            2. The chassis, plumage, wing, weighs much less than the fuel that will have to be taken. And the fuel consumption of an airplane (or rather, a cruise missile) is much less than that of a missile.

            By parachute:
            Everything is so, but problems are solved much easier than rear-wheel drive landing.

            For rear wheel drive landing:
            Try to take an even stick and place it with one end on your fingertip. Hold it for a few seconds. Now imagine a column of several meters and weighing several tons. Again, the crosswind, the engine torch creates powerful upward flows, theoretically, these flows help, but only theoretically, the slightest breeze and you have more riser on one side and less on the other. The column falls to its side. And yet the mass is rapidly changing (because you are spending fuel and not liters). And also the difference in the density of the medium (height), humidity, temperature, natural ascending flows, etc.
            Oh, and landing on a water platform (which is not stable by definition), it's generally a circus.
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            1. Cyril Offline
              Cyril (Kirill) 4 May 2020 00: 01
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              1. Planning (airplane) has already been canceled?

              Estimate - yes. Kryl-SV uses an additional jet engine to return.

              Chassis, plumage, wing, weighs much less than the fuel that will have to be taken.

              Who told you this?

              By parachute:
              Everything is so, but problems are solved much easier than rear-wheel drive landing.

              And how is the dependence of the parachute on the wind, its enormous size for a heavy rocket and, most importantly, the impact on the surface, which it does not completely extinguish, be solved?

              Try to take an even stick and place it with one end on your fingertip. Hold it for a few seconds. Now imagine a column of several meters and weighing several tons.

              The stability of the planted step on the platform or ground platform is provided by the expanding supports. So your analogy is incorrect.

              Again, the crosswind, the engine torch creates powerful upward flows, theoretically, these flows help, but only theoretically, the slightest breeze and you have more riser on one side and less on the other. The column falls to its side.

              Since 2017, the Falcon-9, when landing on a barge, has not collapsed on it even once.

              And yet the mass is rapidly changing (because you are spending fuel and not liters).

              It is true that, at the moment of landing, the center of gravity shifts to the bottom of the step, which provides it with even greater stability.

              Oh, and landing on a water platform (which is not stable by definition), it's generally a circus.

              And once again - since 2017, when landing on a barge, there was not a single case that the step fell on its side.
              A complaint
              1. Rum rum Offline
                Rum rum (Rum rum) 5 May 2020 02: 00
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                I didn’t want to continue the discussion, but apparently it would have to.

                And how is the dependence of the parachute on the wind, its enormous size for a heavy rocket and, most importantly, the impact on the surface, which it does not completely extinguish, be solved?

                1. Wind is the environment. If your parachute blows in five minutes 5 km to the side, then the feather will blow in the same time at the same distance (rough, but it will).
                Of course, the falling step will slip the wind stream much faster than the parachute, but the speed will pick up much more. Accordingly, you will need much more energy for the brake impulse, plus during free fall the device will gain additional parasitic moments (rotation, somersaults, etc.), because the stage is not symmetrical, they will have to be counterbalanced somehow (again, energy costs).
                2. Parachutes are different, for example, "Wing". The start takes place in a certain area, the height is large, it is quite possible to compensate for the demolition (this also applies to the glider). To soften ..... here a reactive impulse may come in handy, but its power is much less.

                Regarding fuel and a low center of mass:
                The fuel is liquid, and the system is unstable, if not unstable.

                And the most important thing that should speak against reusability is the gigantic thermodynamic loads - you will never guess where a microcrack is formed or what kind of stress concentrator, and - goodbye, Motherland.
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                1. Cyril Offline
                  Cyril (Kirill) 5 May 2020 20: 59
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                  If your parachute blows in five minutes for 5 km to the side, then the feather will blow in the same time at the same distance (rough, but it will).

                  Why did you suddenly decide so?

                  Of course, the falling step will slip the wind stream much faster than the parachute, but the speed will pick up much more.

                  To extinguish it, braking impulses are also used.

                  plus during free fall the device will gain additional spurious moments (rotation, somersaults, etc.)

                  To stabilize the stage during a controlled (and not free) fall, lattice rudders are used. Bombs do not tumble in flight, right?

                  the stage is not symmetrical, they will have to be countered somehow (again, energy costs).

                  The step has axial symmetry, and it stabilizes in the fall by lattice rudders.

                  The fuel is liquid, and the system is unstable, if not unstable.

                  I just can’t say how the rest of the fuel in the tanks behaves over the entire descent trajectory (I suspect that it’s not just splashing there like in a car’s tank, but I’m not sure), but SpaceX has shown in practice that landing their steps is a controlled process and stable. There was not a single case where the step would begin to rotate during the descent due to destabilization by fuel.

                  And the most important thing that should speak against reusability is gigantic thermodynamic loads - you will never guess where a microcrack is formed or what stress concentrator

                  Well, you will not guess, and material experts calculate all these stresses mathematically.
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                2. Cyril Offline
                  Cyril (Kirill) 5 May 2020 21: 43
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                  Parachutes are different, for example, "Wing". The start takes place in a certain area, the height is large, it is quite possible to compensate for the demolition (this also applies to the glider). To soften ..... here a jet impulse may come in handy, but its power is much less.

                  A wing type parachute is just as dependent on the wind as a regular one. And most importantly, this is the size of the parachute, which is needed to dampen the first-stage fall speed of 25 tons, falling at a speed of 2 km / s (at the moment of entry into the atmosphere) from a height of about 100 km.

                  For comparison. The 2,2-ton (that is, 10 times smaller in mass) descent vehicle of the Soyuz spacecraft has a main parachute of 1000 square meters. m (and after all there is still a small brake parachute and reserve). Moreover, the parachute is opened at an altitude of 9-10 km, when the speed of the descent vehicle due to aerodynamic drag (the capsule for this has a special shape) decreases to 240 m / s. And immediately before touching the ground due to the main parachute, it is extinguished to 9 m / s, and not to zero. To soften the blow, solid-fuel braking engines are installed on the Soyuz capsules.

                  Now figure out what kind of parachute you need to save the 22-ton stage.
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            2. Cyril Offline
              Cyril (Kirill) 4 May 2020 00: 30
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              Here you can see the Falcon-9 launch and landing circuit.
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    2. Rum rum Offline
      Rum rum (Rum rum) 3 May 2020 22: 49
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      Quote: steel maker
      And I wait and hope when the Buran project or something else is resumed.

      Buran? Are you kidding? Most of the payload there was spent on the carcass of the largest Buran.
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      1. NordUral Offline
        NordUral (Eugene) 4 May 2020 21: 09
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        Do not lie, although you may not know the topic beyond the hill, Rum Rum, with your education.
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        1. Rum rum Offline
          Rum rum (Rum rum) 5 May 2020 00: 54
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          Express your thoughts more accurately.
          What lies are you talking about? What mound, what topic are you talking about? And what do you know about my education?
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          1. NordUral Offline
            NordUral (Eugene) 5 May 2020 17: 27
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            Rum Rum! I don’t know, but I can assume that either lying or education is not enough to work with information.

            A complaint
  • Sergey Latyshev Offline
    Sergey Latyshev (Serge) 4 May 2020 14: 11
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    But in fact, most importantly, no one noticed, IMHO.

    1) The text of "approval" is absolutely from the water, such as "for all good versus all bad".
    2) Does the approval of the Academy of Sciences solve anything at all? Maybe they will allocate money? Or will patents be disclosed closed? Or will the finished drawings of the solution betray? Academics will now be able to work on the problems of Roscosmos, and before it was forbidden ????
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  • NordUral Offline
    NordUral (Eugene) 4 May 2020 21: 07
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    Hollow Nuts, what else to say!
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  • aleksandrmakedo Offline
    aleksandrmakedo (Dubovitsky Victor Kuzmich) 5 May 2020 10: 29
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    Quote: Monster_Fat
    Naturally - these are fairy tales. The main thing is to get financing, and then: “either donkey, or bastards ....” Russian, space “breakthroughs” of recent years cause only laughter. By the way, I forget to ask everyone - did they find "drillers", or are they still looking? laughing

    If you had a little understanding of the difference in the functioning of economies between penguins and ours, then you wouldn’t have written nonsense. Private production of complex and expensive equipment, without merging in a sexual embrace with the state budget, is impossible for birds, in principle.
    In Russia, everything is different. State-owned company and government funding. What you said can be compared with the fact that one pocket requires you to transfer a pack of dough from another pocket of the same jacket. And here the jacket decides whether he needs such financial transactions.
    You can still try to say that theft .....
    Yes, in our country this is considered theft, and somehow (I, for example, am not happy with the results, I want to see blood and yushka from draconian pressure from law enforcement), those who have been prosecuted and punished.
    But in birds, such an action is precisely called lobbying for interests, and suitcases with dough are not carried there. They appoint their representatives there ..... And all this is legal. That is, it is not prosecuted at all.
    What, is it better?
    Then a fair wind.
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  • aleksandrmakedo Offline
    aleksandrmakedo (Dubovitsky Victor Kuzmich) 9 May 2020 23: 50
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    Quote: Cyril
    Dear, did you study at school?

    I am. And you?

    To return 1 step to the ass, you need:
    To take fuel into flight, to return the stage is the growth of useless mass (weaning it from the useful one).
    To take extra fuel, you won’t believe it - you still need fuel (again minus the payload).

    To return the stage in an airplane, you need:

    - take in flight the landing gear, wing, tail, additional (in addition to the main rocket engine) air-jet engine for landing and fuel for its operation.

    - To take additional fuel for the WFD, you will not believe it (c) - you still need fuel.

    But that is not all. Return to the ass on the engine increases the thermodynamic loads on this engine by about 2,5 times (figures are not accurate), thereby greatly reducing its resource.

    The numbers on your ceiling are taken, not "inaccurate." When returning the Falcon-9 stage, only 1 engine out of 9 installed on it is used for braking. Moreover, it “ignites” only two times during landing for a couple of seconds. There is no increase in loads by 2,5 times there.

    As I understand it, the USAM Challenger was not enough with Voyager.

    As I understand it, in space technology you are not an ass. Firstly, the Challenger was landing just according to the airplane scheme, and not on its engines. Secondly, Voyager is not a Shuttle, but a research interplanetary probe, which was successfully launched in the 70s and is currently located on the border of the Solar System.

    Based on all this, you can understand for yourself what real effectiveness these devices have.

    Good performance, proven by repeated, repeated (and successful) launches of the Falcon-9.



    We thought that there would be SUCH preparation for the next flight. BUT! It turned out SUCH



    What do you think Mask has, otherwise this thing happens?
    Yes, if this crook did not lie at every step, then he would not receive any funding. Did he build the launch complex? The design of the engine that was handed over to him after the closure of the lunar program for free, patents, design bureaus accelerated after the lunar programs? And you think that now the start price for the customer is NASA's real? And not a deal, a discount, for having received billions in the making? Debts need to be paid, and not only with us. They- it is much more cruel.
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