Furthermore there are two different engines called D-30 current: one is the "transport engine version, in 2 variants:
D-30 KU of the Tu-154 , Il-62
D-30KP of the old version of Il-76
And also there is the D-30F6 of the Mig-31, for which the core parts have been recently put back in production ( I believe in Perm Motors.
Pretty sure that is not true. Don't confuse very similar designations for a relationship... the S-300F and S-300P are not related to S-300V for instance either.
The mach 2.83 plus D-30 engine in the MiG-31 is not related to the subsonic high bypass D-30 turbofan in the Il-76 and A-42 and Tu-154 and Il-62.
Had a discussion with Vlad79 about it about a decade ago.
BTW if they were related then why restart production of the MiG-31 engine when the engines for the Il-76 never left production?
It is idiotic to continue manufacturing the PS-90 when the PD-14 is better in all aspects and takes less resources and time to build. It is as simple as that.
Well that is a lie... there are several versions of the PS-90 that go up to 18 tons thrust and you mentioned yourself replacing the engines of the Il-476 with PD-14s would result in a small loss of thrust... having less thrust is not better.
This means you could be making engines for 3 Il-76 instead of 2 with the same factory resources.
That would be relevant if the problem was making PS-90 engines that is slowing up Il-476 production and AFAIK it is not.
They have already put a PD-14 under the wing of an Il-76 when they were flight testing the engine at Zhukovsky.
That is a bit disingenuous... were they also testing these engines for the Il-476?
Or was that the Il-76LL engine testing aircraft that tests engine performance but not wing or aircraft performance with different engines?
The PS-90 engine itself is not that well tested or reliable either.
The PS-90 is about three engines isn't it? One is about 14.5 ton, one is about 16 ton thrust, and there is one that is about 18 tons thrust too isn't there?
It is in production and it makes sense to keep it in production until more of the PD range are in production.
It might turn out they want more power so a PD-16 or PD-18 might be considered for the Il-476 and other types... who knows.
You will basically be spending resources maintaining two lines of production competing for the same manufacturing resources for no gain.
There is efficiency and there is being ridiculous.
Now the Su-57 is flying and in serial production are you going to cancel everything else... Su-30, Su-33, Su-35, Su-75 and anything MiG or Yak have in the works for fighter types?
Is making all those aircraft destroying the Russian Air Force... is the bloated production base killing Russian soldiers in Ukraine and Syria... all those different missiles and bombs and shells and aircraft and helicopters... they should just have one company making one thing... lets call them Boeing and lets call it the F-35.
Having different things makes sense sometimes, and completely replacing it with new stuff is generally not practical... how many T-72s or T-62s does the Russia Army use at the moment? Should they all be scrapped and replaced with T-14?
Was the T-90AM a waste of money and time?
Just because the T-14 is better does not mean the T-90 is useless crap... and it will be cheaper.
I would say in 5 or 10 years time they can shift production to newer engine types and either replace the old aircraft (Tu-154M and Il-62) or fit new engines (Il-476).
It might even be the case that the Il-276 might work better with a PD-16 or PD-18 engine to boost its performance and add fuel for better range.
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Rodion_Romanovic
