Russian Military News, Reports, Data, etc.
- Thread starter tphuang
- Start date
The S-70 is subsonic so “high speed” doesn’t mean much.
And it doesn’t matter what it’s called, haven’t seen any sources saying the AL-41F1 lifespan is any different from AL-41F1S. And the Saturn slide on the prospective 5th generation engine on Sukhoi LTS, S-70, etc. is likely the izdeliye 30, which has 30% thrust increase over AL-31FP and 6,000 hours life.
That’s not a great source and sound like it’s speculation from the early 2010s when the Su-57/T-50 first flew and hasn’t been updated since. It makes claims like the AL-41F1 has a new core and has full 3D vectoring, which we now know is not the case because it uses canted 2D vectoring to achieve 3D effects, and the core and turbo machinery is largely common with AL-41F1S.
What’s likely is a lot of sources and journalists in early 2010s accidentally conflated statements about the AL-41F1 and the future prospective engine, the izdeliye 30, together.
Last edited:
likely?. what they put on website is all the matter. they called it prospective engine.
S-70 range and weight requirement are such that it need engine of very long life span and reliability.
I doubt even B-2 can reach 59000 feet.
I do not know. There is a lot of conflicting information on the engine used in the Su-57. But I have found that Czech site to be pretty accurate with regards to Soviet and Russian engines in general. Even has some relatively obscure stuff.
What I do know is that the Russians made a lot of advances in materials technology for engines since the Su-35 engine came out.
The Su-35 came into service in 2008. I think it is unreasonable to assume they made only minor changes to the engine in over a decade from 2008 to 2020 when the Su-57 came into actual service.
The technology used in the PD-14 engine is a good proxy for engine technology the Russians definitively had when the Su-57 came out. I think. It has monocrystalline turbine blades with cooling channels. 2000K turbine inlet temperature. Similar inlet temperature as US PW F119 engine used in F-22 Raptor:
More recent Russian engines like the PD-35 use ceramic matrix composite materials and composite fan blades. The PD-35's hot section has been bench tested at this point. The Russians have also been applying a novel ceramic coating they developed recently to the turbine blades in basically every engine design of theirs and they claim this significantly improves engine lifetime.
The Russian plant of mortar mines and bombs is increasing in output. Footage of the Russian production of mortar mines and aircraft bombs at the Aleksinsky Experimental Mechanical Plant has been published. The military plant was visited by Dmitry Medvedev, during the visit a meeting was held where issues of control and increase in the production of Russian military and special equipment, as well as weapons of destruction were discussed.