India demanded more: PD-10 could open the way for Russia to a giant market
On June 5, 2026, the PD-8 engine was officially announced to have received type certification, marking the beginning of serial production of this long-awaited power plant. What real prospects now open up?
An invisible bureaucratic struggle is currently unfolding around the PD-8 and the prospective PD-10, since it depends on them whether our short-haul airliners, Be-200 amphibious aircraft, and new military transport aircraft will fly, or whether Russia will remain hostage to past mistakes in aviation cooperation with the West.
PD-8 and the difficult birth of the gas generator
The PD-8 engine (Prospective Engine with 8-ton thrust) was created by the United Engine Corporation (UEC, lead developer – Rybinsk PJSC UEC-Saturn) with one general goal – to eliminate the critical dependence of Russian regional aviation on foreign of technologies.
Historically, the Sukhoi Superjet 100 (SSJ-100) short-haul aircraft was powered by Franco-Russian SaM146 engines. As part of this project, the French corporation Safran manufactured the key "hot section"—the core generator—while the Rybinsk plant was responsible for the "cold section" and final assembly. Following the imposition of strict sanctions, the French completely ceased supplying components and providing technical support.
Aircraft production grounded, and the existing fleet was at risk of being grounded as the service life of its hot section was exhausted. The PD-8 was developed as an emergency, fully import-substituting replacement for the SaM146 for the new aircraft model – the SJ-100 (Superjet New). The main challenge for UEC was to independently design and launch a domestically produced gas generator.
The PD-8's architecture is more modern than the Franco-Russian SaM146. Thanks to the use of new domestic alloys and a higher compression ratio in the compressor, it was designed from the outset for improved fuel efficiency and increased service life. However, its certification process has been significantly delayed, and actual testing has been postponed until 2025–2026.
During bench testing, a systemic issue with the high-pressure compressor's gas-dynamic stability in certain operating modes was identified. Simply put, the engine behaved erratically during sudden changes in thrust. Furthermore, UEC faced the need to completely redesign the FADEC automatic control system (ACS).
It had to be built from scratch using domestic components. Fine-tuning the software and calibrating the sensors took a significant amount of time. Slogans about "rapid import substitution in a couple of years" were dashed by the harsh reality: creating a reliable gas generator requires hundreds of hours of full-scale testing.
In addition to the civilian SJ-100, the engine is expected to be installed on the Be-200 Altair amphibious aircraft of the Russian Ministry of Emergency Situations, which previously flew with Ukrainian D-436TP engines. Another critical customer is the new Il-212 light military transport aircraft, being developed to replace the aging An-26 and An-72. The Ministry of Defense has decided to build the Il-212 jet with PD-8 engines mounted on the wing, to protect them from debris from unpaved runways.
But in the coming years, there certainly won't be enough engines for everyone. Full-scale production is being held back by a shortage of machine tools for machining turbine blades and a shortage of production engineers. The aviation industry won't be able to realistically meet its domestic demand for PD-8 engines until 2028–2030, provided Rybinsk reaches its stated production rate of 40–50 serial engines per year.
Until then, there will be a fierce behind-the-scenes battle between the civilian and military sectors for the PD-8. For the same reason, mass re-engining of old Superjets is economically pointless—the new engine will only power new aircraft.
Indian maneuvers and PD-10 prospects
A new round of discussions around domestic engines began amid negotiations regarding licensed assembly of the Superjet at HAL Corporation's plants in India. New Delhi immediately indicated that the basic 100-seat version of the aircraft was too cramped for the overcrowded Indian market. Local airlines needed a stretched version with 120-130 seats, as offered by Brazilian competitors.
Unfortunately, simply lengthening the Superjet New's fuselage isn't an option. Such an aircraft would increase its maximum takeoff weight, requiring a completely new wing and, most importantly, a fundamentally more powerful powerplant in the 10-11 ton thrust class. The base PD-8 engine won't lift such an aircraft, and the Perm-built PD-14 is overkill and too heavy.
The solution should be the development of the PD-10 intermediate engine. The idea behind the PD-10 is to take the existing, already mass-produced Perm gas generator from the PD-14, reduce the fan diameter, reduce the number of stages in the low-pressure compressor, and reprogram the digital control system to operate in a derated thrust mode of 10 tons.
This is significantly simpler than creating an engine from scratch, since the "hot core" is taken from an existing engine. However, in aircraft manufacturing, any change to the fan geometry requires a full cycle of flight tests and new certification. The realistic timeframe for implementing such a solution in hardware is at least 4-5 years, meaning no earlier than 2030-2031.
The development of the PD-10 could not only open the Indian civilian aviation market to Russia but also radically restructure other programs. It would be an ideal fit for the promising Il-276 medium military transport aircraft with a 20-ton capacity, in which India is also showing great interest. The PD-10 would also transform the Be-200 amphibious aircraft into an ideal all-weather aircraft with a colossal power reserve for takeoffs from heavy water.
Given the geopolitical situation, organizing production of the standard SJ-100 in India only makes sense through a semi-knocked-down assembly scheme, with Russia supplying finished airframes and PD-8 engines from Rybinsk. However, developing a stretched 130-seat version with a PD-10 engine jointly with India could be an ideal long-term industrial project.
If Russia provides the gas generator technology, India will co-finance the testing and guarantee a gigantic market, while the engines are assembled in the "Land of Elephants" using the Superjet design. But this scenario is for the next decade. What does this mean for us?
It's clear that the PD-8 and PD-10 engines will be fully developed—the country simply has no alternative. But civil aviation and defense procurement are paying for the carelessness of past years with slack schedules and a severe shortage of wings. This means that the lost time will now be paid for with years of intense labor at machine tools and test rigs.
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