• Wednesday, October 18, 2017

Upcoming Russian Beast.........

Discussion in 'Air Warfare' started by Zain Malik, Apr 13, 2016.

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  1. Zain Malik

    Zain Malik FULL MEMBER

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    Sukhoi Su-47...
    upload_2016-4-13_20-17-7.png


    The Sukhoi Su-47 Berkut , also designated S-32 and S-37 with the twin-engined delta canard design offered by Sukhoi in the early 1990s under the designation Su-37) during initial development, was an experimental supersonic jet fighter developed by Sukhoi Aviation Corporation. A distinguishing feature of the aircraft was its forward-swept wing that gave the aircraft excellent agility and maneuverability. While serial production of the type never materialized, the sole aircraft produced served as a technology demonstrator prototype for a number of advanced technologies later used in the 4.5 generation fighter SU-35BM and current fifth-generation jet fighter prototype Sukhoi PAK FA T-50.

    On 11 August 2014, Commander-in-chief of the Russian Air Forces, Colonel General Viktor Bondarev claimed that Russia is still continuing the research and development of Su-47 or similar forward-swept wing fighters. The new prototypes of such aircraft will be unveiled in the near future.
    Development
    Originally known as the S-37, Sukhoi redesignated its advanced test aircraft as the Su-47 in 2002. Officially nicknamed Berkut (Golden Eagle), the Su-47 was originally built as Russia's principal testbed for composite materials and sophisticated fly-by-wire control systems.

    TsAGI has long been aware of the advantages of forward-swept wings, with research including the development of the Tsibin LL and study of the captured Junkers Ju 287 in the 1940s. Forward-swept wings yield a higher maximum lift coefficient, reduced bending moments, and delayed stall when compared to more traditional wing shapes. At high angles of attack, the wing tips remain unstalled allowing the aircraft to retain aileron control. Conversely, forward sweep geometrically creates increased angle of incidence of the outer wing sections when the wing bends under load. The wings experience higher bending moments, leading to a tendency for the wings to fail structurally at lower speeds than for a straight or aft-swept wing.

    The project was launched in 1983 on order from the Soviet Air Force. But when the USSR dissolved, funding was frozen and development continued only through funding by Sukhoi. Like its US counterpart, the Grumman X-29, the Su-47 was primarily a technology demonstrator for future Russian fighters.

    Design
    [​IMG]
    Outline of the Sukhoi Su-47
    The Su-47 is of similar dimensions to previous large Sukhoi fighters, such as the Su-35.To reduce development costs, the Su-47 borrowed the forward fuselage, vertical tails, and landing gear of the Su-27 family. Nonetheless, the aircraft includes an internal weapons bay, and space set aside for an advanced radar.

    Though similar in overall concept to the Grumman X-29 research aircraft of the 1980s, the Su-47 is larger and far closer to an actual combat aircraft than its US counterpart.

    Like its immediate predecessor, the Su-37, the Su-47 is of tandem-triple layout, with canards ahead of wings and tailplanes. Interestingly, the Su-47 has two tailbooms of unequal length outboard of the exhaust nozzles. The shorter boom, on the left-hand side, houses rear-facing radar, while the longer boom houses a brake parachute.

    Maneuverability
    The Su-47 has extremely high agility at subsonic speeds, enabling the aircraft to alter its angle of attack and its flight path very quickly while retaining maneuverability in supersonic flight. The Su-47 has a maximum speed of Mach 1.6 at high altitudes and a 9g capability.

    The swept-forward wing, compared to a swept-back wing of the same area, provides a number of advantages:




      • higher lift-to-drag ratio
      • better agility in dogfight situations
      • higher range at subsonic speed
      • improved stall resistance and anti-spin characteristics
      • improved stability at high angles of attack
      • a lower minimum flight speed
      • a shorter take-off and landing distance
    Wings
    The forward-swept midwing gives the Su-47 its unconventional appearance. A substantial part of the lift generated by the forward-swept wing occurs at the inner portion of the wingspan. This inboard lift is not restricted by wingtip stall and the lift-induced wingtip vortex generation is thus reduced. The ailerons—the wing's control surfaces—remain effective at the highest angles of attack, and controllability of the aircraft is retained even in the event of airflow separating from the remainder of the wings' surface.

    A downside of such a forward-swept wing design is that it geometrically produces wing twisting as it bends under load, resulting in greater stress on the wing than for a similar straight or aft-swept wing. This requires the wing be designed to twist as it bends—opposite to the geometric twisting. This is done by the use of composites wing skins laid-up to twist. The plane was initially limited to Mach 1.6.

    Thrust vectoring
    The thrust vectoring (with PFU engine modification) of ±20° at 30°/second in pitch and yaw will greatly support the agility gained by other aspects of the design.

    Specifications (Su-47)
    Data from World Aircraft & Systems Directory

    General characteristics

    [​IMG]



      • Crew: 1
      • Length: 22.6 m (74 ft 2 in)
      • Wingspan: 15.16 m to 16.7 m (49 ft 9 in to 54 ft 9 in)
      • Height: 6.3 m (20 ft 8 in)
      • Wing area: 61.87 m² (666 ft²)
      • Loaded weight: 25,000 kg (55,115 lb)
    Performance


     
    Last edited: Apr 13, 2016
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  2. ACE OF THE AIR

    ACE OF THE AIR SENIOR MEMBER

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    This project is non existent...
     
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  3. Zain Malik

    Zain Malik FULL MEMBER

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    STATUS:In production
     
  4. ACE OF THE AIR

    ACE OF THE AIR SENIOR MEMBER

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    In this documentary they are commenting that the Berkut is dead... All the technology it had incorporated has been used for the Su-35 and T-50 Pakfa.
     
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  5. Desertfalcon

    Desertfalcon PROFESSIONAL

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    I don't really see the benefits of a swept forward wing outweighing the difficulties and cost of them. I will be surprised if this ever enters service.
     
  6. Zain Malik

    Zain Malik FULL MEMBER

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    It provides extreme maneuverability.........
     
  7. Natan

    Natan FULL MEMBER

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    It was only a technology demonstrator, similar to Grumman X-29. Not even nearly close to serial production.
     
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  8. fitpOsitive

    fitpOsitive FULL MEMBER

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    Beautiful bird, who cares about production :)
     
  9. Mr.Meap

    Mr.Meap FULL MEMBER

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    TVC could do the trick. Plus you don't have to start from scratch to incorporate it. Just a few tinkering, waaay more cheaper than a SU-47
     
  10. pakistanipower

    pakistanipower SENIOR MEMBER

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    Go kid go to sleep, in your dreams:crazy::hitwall: its dead project
    But with most complexity to built specially on wings
     
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  11. Penguin

    Penguin PDF THINK TANK: ANALYST

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    An experimental supersonic jet fighter developed by Sukhoi Aviation Corporation. Originally known as the S-37, Sukhoi redesignated its advanced test aircraft as the Su-47 in 2002. Officially nicknamed Berkut (Golden Eagle), the Su-47 was originally built as Russia's principal testbed for composite materials and sophisticated fly-by-wire control systems. The project was launched in 1983 on order from the Soviet Air Force. But when the USSR dissolved, funding was frozen and development continued only through funding by Sukhoi. First flight on 25 September 1997. Serial production never materialized, the sole aircraft produced served as a technology demonstrator prototype for a number of advanced technologies later used in the 4.5 generation fighter SU-35BM and current fifth-generation jet fighter prototype Sukhoi PAK FA T-50. Number built: 1

    [​IMG]

    [​IMG]

    Grumman X-29 - Wikipedia, the free encyclopedia
    1984, 2 built
     
  12. volatile

    volatile SENIOR MEMBER

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  13. vostok

    vostok PDF THINK TANK: ANALYST

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    There were some ideas to make the Su-47 as jets for nuclear aircraft carriers, but with the collapse of the USSR the program was closed.
     
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  14. Guynextdoor2

    Guynextdoor2 BANNED

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    That 'tech' is more valuable than it looks. Problem with forward swept wings is that the wings load up very very quickly and shatter. There is a lot of materials science that was needed to make them strong enough to withstand the forces. But mastering it means 'super maneuvarability' is easily possible for the ruskies in any design they use.
     
  15. Zain Malik

    Zain Malik FULL MEMBER

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    Hey never call me a kid again......I am younger in age but have more sense to talk and more brain than you....pta nahi apne aap ko samajhta kia hai @pakistanipower
     
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