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kitplane01
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Aviadvigatel PS-90

Tue Feb 26, 2019 2:59 am

The Aviadvigatel PS-90 seems to be Russia's most significant jet engine, being used on new version of the IL-76, the IL-96, Tu-204. It's successor, the PD-14, is to be used on the the MS-21.

How do they compare to modern western engines? I assume their SFC is lower, but what technologies are they lacking? Is it a core/temperature problem, fan inefficiencies, ...?

https://en.wikipedia.org/wiki/Aviadvigatel_PS-90
https://en.wikipedia.org/wiki/Aviadvigatel_PD-14
 
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Francoflier
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Joined: Wed Oct 31, 2001 12:27 pm

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 8:26 am

kitplane01 wrote:
I assume their SFC is lower,


Do you mean higher?
I'll do my own airline. With Blackjack. And hookers. In fact, forget the airline.
 
unimproved
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Joined: Sun Jun 22, 2014 7:14 pm

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 11:02 am

If the no-source wikipedia claims are true: The A2 was comparable to current engines when it was certified (with western parts), and the PD-14 seems to be 15% more efficient than that.
 
trijetsonly
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Joined: Tue Jul 21, 2009 10:38 pm

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 2:32 pm

The PS-90 sounds like a Rolls-Royce RB211-535 and also looks like it. Some engineers say that it is even based on it.

Sure, it's twin-spool vs. three-spool engine design but I've never seen a PS-90 open if it's really just twin-spool.
The slightly older Progress D-18 engine is three-spool based on the RB211-524.
Engine design has never really been the sweet spot of soviet engineering and there are lots of adaptions of German and British designs.

So I expect it to perform similar, maybe better, probably a bit worse.
Happy Landings
 
WIederling
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Re: Aviadvigatel PS-90

Tue Feb 26, 2019 5:17 pm

trijetsonly wrote:
... and there are lots of adaptions of German and British designs.
.


That is different from which nation in your opinion? ( excluding Germany and the UK )

I find the "Soviets could only copy" allegation by posters that seem to lack history information
distasteful. Same for some other falsely assumed derivation path.

apropos: Ivchenko did their first 3-spool in the late 60ties / early 70ties.
Murphy is an optimist
 
GalaxyFlyer
Posts: 3358
Joined: Fri Jan 01, 2016 4:44 am

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 5:29 pm

trijetsonly wrote:
The PS-90 sounds like a Rolls-Royce RB211-535 and also looks like it. Some engineers say that it is even based on it.

Sure, it's twin-spool vs. three-spool engine design but I've never seen a PS-90 open if it's really just twin-spool.
The slightly older Progress D-18 engine is three-spool based on the RB211-524.
Engine design has never really been the sweet spot of soviet engineering and there are lots of adaptions of German and British designs.

So I expect it to perform similar, maybe better, probably a bit worse.


More like metallurgy and computer-aids to design to up to Western standard.

GF
 
trijetsonly
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Joined: Tue Jul 21, 2009 10:38 pm

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 5:55 pm

WIederling wrote:
trijetsonly wrote:
... and there are lots of adaptions of German and British designs.
.


That is different from which nation in your opinion? ( excluding Germany and the UK )

I find the "Soviets could only copy" allegation by posters that seem to lack history information
distasteful. Same for some other falsely assumed derivation path.

apropos: Ivchenko did their first 3-spool in the late 60ties / early 70ties.


Actually I'm a big fan of soviet aerospace engineering and their achievements in aviation and spaceflight.
I prefer the Tu-144 over the Concorde and I honor their sustainability.
But apart from many good features, engine design has never been their strength.
I've been to the engine factories in Perm (Aviadvigatel) and Zaporizhia (Ivchenko). It was a huge disappointment for me to lern how their jet engine designs have been developed.

I'm still a big fan of soviet planes and jet engines are the only products where I would ever pull the "copy-allegation", due to huge historical background information - not lack thereof.
Happy Landings
 
stratclub
Posts: 1286
Joined: Fri Jan 05, 2018 10:38 pm

Re: Aviadvigatel PS-90

Tue Feb 26, 2019 8:40 pm

I could not imagine the TU-144 being anything more than a really huge disappointment. The Soviets really screwed the pooch on it's design. It is just so sad how big a fail the USSR's political ideology was, just horrific.

All in all, the Soviets have done some really cool stuff..............

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