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    Su-57 Stealth Fighter: News #6

    magnumcromagnon
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    Post  magnumcromagnon on Mon May 04, 2020 2:09 am

    AlfaT8 wrote:Yea, the U.S has a serious problem all the way down to the Academic level, it's being going on for years, but its become ridiculous recently.
    Because of this we are going to see even more odd things going on, with more and more the older generation Engineers and Designers getting old and retiring.
    There replacements are clearly subpar, granted the retiring generation weren't much to begin with.

    Zumwalt,F-22/35, the entire FCS program, Project Falcon, ext,ext.

    And the U.S thinks it could fight a new Cold War with this terrible academic foundation, it's laughable.

    They need to import scientists and engineers from China to fight a war against China! Embarassed Razz
    GarryB
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    Post  GarryB on Mon May 04, 2020 8:38 am

    Well the reason that in the past aircraft don't fly around at medium and high altitudes at supersonic speeds all the time is because that would require a lot of AB use and while you move much faster around the place you also burn up lots and lots of fuel.

    One of the fundamental cores of the 5th gen fighter feature set is supercruising is that being stealthy you have all your weapons and equipment inside so you are low drag and stealthy, but the enormous thrust potential of your engines that give you high acceleration and manouver performance because you are a fighter, means that you should be able to super cruise... which is fly supersonic without AB... so to be clear, old planes can go fast but the doubling or tripling of fuel consumption greatly reduces their flight range... so most of the time it is not worth it. The new planes are supposed to be able to fly faster than other planes (ie supersonic) in dry thrust which should give all the benefits of supersonic flight without the penalties of having to do it in full AB...

    It was amazing because you move around the battlespace much faster.... you cover more airspace, your missiles reach much further than enemy missiles do and you can run down targets or run away quite easily without becoming a huge IR spot light with AB on all the time...

    It seems however that this is something the F-35 cannot do, and also likely a serious problem for smaller users who intended to use this plane as their primary fighter...

    Perhaps Turkey might be thinking even the Su-35 is better than the F-35 and they got out of that programme just in time...

    I would be very interested to see a collaborative joint venture between Turkey and Russia could come up with creating an export oriented Su-57 using Turkish bits and Russian bits... a bit like the Russian/Indian Su-30MKI, but instead being a Su-57MKT...

    In real combat being able to engage full AB and climb and accelerate to supersonic before you launch a missile at a target could mean the difference between a kill and not a kill because the added energy you give to your missile will make it rather more effective and capable...


    Last edited by GarryB on Sun May 17, 2020 1:55 am; edited 1 time in total
    dino00
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    Post  dino00 on Sat May 09, 2020 2:37 pm

    MOSCOW, May 8 - RIA Novosti. The deliveries of fifth-generation Su-57 fighters to the Russian Air Force are planned in two stages: until the mid-2020s with a fourth-generation engine, after - with a fifth-generation engine, said Deputy Minister of Defense of the Russian Federation Alexei Krivoruchko .
    GarryB
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    Post  GarryB on Sun May 10, 2020 4:10 am

    Fair enough.... the improved engine was intended to counter weight increases over time in operation...

    The F-14 didn't have a decent engine till the F-14D model entered service in the early 1990s...

    Leaving service entry for the engine for a few years will allow more time for testing and further improvements in design and production so it isn't too expensive and it is reliable.
    kvs
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    Post  kvs on Sun May 10, 2020 4:57 am

    GarryB wrote:Fair enough.... the improved engine was intended to counter weight increases over time in operation...

    The F-14 didn't have a decent engine till the F-14D model entered service in the early 1990s...

    Leaving service entry for the engine for a few years will allow more time for testing and further improvements in design and production so it isn't too expensive and it is reliable.

    The 5th generation engine is a major jump over the 4th generation one. That is why it is taking so long to develop. It
    uses new materials previously only hypothesized. Likely it also is a major revision of all the stages of a jet engine.
    Not quite as revolutionary as pulse detonation, but not trivial either.

    dino00
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    Post  dino00 on Sat May 16, 2020 1:08 pm

    Source: Su-57 fulfills unmanned mode during the tests

    MOSCOW, May 16 - RIA Novosti. The latest fifth-generation fighter Su-57 fulfills the unmanned mode during the tests, a source in the military-industrial complex told RIA Novosti.
    "An unmanned mode is being developed on the basis of the T-50 flying laboratory. The pilot is in the cockpit during the flight, but only controls the performance of all functions," the agency’s interlocutor said.


    https://ria.ru/20200516/1571532127.html

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