They want to create a hydrogen engine for Angara-A5V

July 23 2020 4

Roscosmos announced its intention to create a hydrogen engine for the Angara-A5V high-class rocket. It is reported by RIA News with reference to the press service of the state corporation.

Dmitry Rogozin, the head of Roscosmos, has set the task of speeding up the process of developing new hydrogen and methane units as much as possible. According to representatives of the Russian space agency, such power plants will allow not only to increase the carrying capacity of the launch vehicle, but also in the future to create a device with reusable stages.

Earlier, the head of NPO Energomash, Igor Arbuzov, announced the launch of the Angara-A5 launch vehicle in order to test the new RD-191 liquid engine in 2023. In the future, the "environmentally friendly" unit will be installed on promising missiles of the "Angara" family.

As for the Angara-A5B version, they intend to present it no later than 2025. It is assumed that the rocket of an increased heavy class will be able to bring a payload weighing up to 37,5 tons to LEO.

Initially, it was planned to equip the carrier with RD-191M oxygen-kerosene engines with an increased thrust index equal to 234 tf (for comparison, in the RD-191 it is equal to 217,4 tf). Now, the above-mentioned unit can be replaced by a hydrogen one.

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123

0

23 July 2020 15: 14

The purpose of the research is not entirely clear. As far as I understood from what I read, they made an oxygen-kerosene RD-191, thought and decided to make methane, because it is cheaper and more environmentally friendly, then they thought and decided to make another hydrogen one, apparently, it is even more environmentally friendly, but hardly cheaper than methane, hydrogen something else needs to be done.
In total, we have 3 engines. How are they going to be used? Kerosene on even days, methane on odd days, hydrogen on holidays? Or at the customer's choice?

The information is extremely vague, I went to the website of NPO Energomash, there is an oxygen-kerosene RD-191, which Angara flew in 2014.

http://engine.space/dejatelnost/engines/rd-191/

There is also an engine for the upper stages of the Soyuz-2 launch vehicle and the Angara launch vehicle (oxygen + naphthyl). As I understand it, naphthyl is a new fuel used instead of kerosene.

Naphthyl is an environmentally friendly type of hydrocarbon fuel with the use of polymer additives. Its use will allow three-stage medium-class launch vehicles to launch more payloads into all types of orbits.

in developing:

oxygen-hydrogen RD-0146 / 0146D "for use in the upper stage of the heavy class LV" Angara-A5 ". RD-0146D"

http://engine.space/dejatelnost/engines/rd-0146-0146d/

Methane engine:

NPO Energomash has been involved in methane production since 1981. Methane is a cryogenic product (evaporation occurs at a temperature of -160 ° C) and is easier to remove from fuel residues. Due to this, methane fuel is more acceptable from the point of view of creating a reusable engine and a reusable aircraft.

http://engine.space/science/develop/kislorodno-metanovye-dvigateli67981191/

Another three-component RD-701, "oxygen-kerosene with the addition of 3-6% hydrogen", is being developed.

At low altitudes, the propulsion system runs on a three-component fuel (kerosene-hydrogen and oxygen as an oxidizer), switching without interruption to an oxygen-hydrogen mixture when flying at high altitudes

http://engine.space/science/develop/trekhkomponentnye-dvigateli6941608/

In general, I am completely confused.
What I would like to say, the "press service" of Roscosmos is in a "deep crisis", I would like it to finally be headed by a sane person, otherwise the information is like gurgling into a puddle. Dmitry Anatolyevich, contact Simonyan, she will select a qualified employee who can convey to ordinary people all these intricacies of technical terms, you should not drag candidates for "suspected espionage" to you.

PS Dear author, it is not entirely clear what idea you were trying to convey to the readers. Messages like:

The head of Roscosmos set the task to speed up the development process as much as possible

Head of NPO Energomash announced the launch of the Angara-A5 LV

а

version of "Angara-A5V", they intend to submit it no later than 2025

- are not very informative, they cause nothing but irritation. If you set yourself such a goal, then it has been achieved. If the goal was different, could you state it? Or is it a walk-through job, copied, pasted, published, went to the cashier?
Cyril

-2

23 July 2020 21: 25

Today, China has sent its first rover orbiter to Mars. This is news and a really great achievement for the country. The Americans launch their (already 5th in a row) rover in July-August.

We continue to choose an engine for a rocket that has been in development for 25 years.
Oleg Shlyapin

-2

8 August 2020 00: 57

In general, the article is illiterately written. What is the Angara-A5M rocket? This is a package of 5 Unified (in the new version of the Universal) Rocket Modules URM-1 with rocket engines RD-191 now already RD-191M. The first stage is 4 lateral URM-1, the second stage is 1 central URM-1. URM-2, a smaller module with an RD-2 rocket engine, as on the Soyuz-0124B rocket, is placed on stage 2.1. Both types of URMs operate on kerosene-oxygen fuel. URMs of 1 and 2 stages are started simultaneously. and then the RD-2M is throttled at 191 stages, i.e. its thrust gradually decreases and the fuel consumption becomes less than in the lateral URMs. As a result, when the side URMs are dropped. the central one continues to work as stage 2. Then the URM-2 starts up and works as stage 3. The payload mass of such a rocket is 24.5 tons.

An upper stage can also be installed on the A5M modification rocket - for example, DM-03. which will be able to transfer spacecraft to GeoStationary (GSO) or GeoTransitional (GPO) orbits. The projects also included Oxygen-Hydrogen upper stages of the Middle (KVSK) and Heavy (KVTK) Classes.

There was also a project of the Universal Oxygen-Hydrogen Block (UHCR), which would be unified for use on the Angara-5 and Proton-M missiles. At the UHCB it was supposed to use 4 RD-0146 LPREs with a thrust of 10 tons. On the Angara-5 it would have been used instead of the URM-2 and the rocket would have a carrying capacity increased to 28.5 tons.

There was also a variant of a lighter rocket for the manned spacecraft "Federation / Oryol" - A5P consisting only of a package of five URM-1. The payload mass is about 18 tons.

And there was a rocket project from a package of 7 URM-1. Rather, 6 side URM-1 and slightly increased in diameter from 2,9 m to 4.1 m URM-1M. Such a rocket would output about 35-36 tons. But it was not developed.

So the load of 37,5 tons, as conceived by the designers, will be able to output a rocket, which will have the same package of 5 URM-5 as in the A1M, and instead of URM-2 - an oxygen-hydrogen stage with a diameter of 4,1 m and with two LPRE RD -0150 with a thrust of 45 tons. This rocket is called "Angara-A5V". And they plan to launch it from the same launch complex as the Angara-A5V missile.
Sergey Latyshev

0

19 August 2020 00: 06

Everyone is already entangled in these media, ships and other projects.
The goal has been achieved. The money has been spent.