Beyond B2

Discussion in 'Defence & Strategic Issues' started by HeinzGud, Dec 29, 2011.

  1. HeinzGud

    HeinzGud Senior Member Senior Member

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    [​IMG]

    The youngest active stealth bomber in the U.S. turns 15 this year, and the other 19 B2s in the Air Force fleet are nearly five years older. Meanwhile, the integrated defense systems they face have become much more sophisticated. Multi-static radar, which is now relatively common, is so sensitive that it can detect certain stealth craft. To stay ahead of such defense systems, the Air Force has budgeted $3.7 billion over the next five years to develop a successor to the B2 that could be active by 2020. Actual designs of the new bomber are classified, but some secrets are already out.

    Patents and bid proposals from Northrop Grumman, maker of the B2, suggest that the new bomber will be narrower than the B2 but maintain the familiar flying wing design, which reduces radar reflection by minimizing hard edges. Engineers are also testing new types of radar-absorbing coatings that could be customized to individual defense systems. And so a picture of the next generation of stealth bombers is beginning to emerge.

    CUSTOM COATINGS

    Most stealth coatings consist of a radar-absorbing material, typically a form of iron, suspended in paint. But they are heavy (which lowers fuel efficiency), need to be reapplied frequently, and don’t absorb all radar frequencies. Ceno Technologies, a particles-science company in Sanborn, New York, has developed a lighter, more durable coating that uses hollow ceramic spheres, called cenospheres. Because the spheres can be covered in carbon, silver or other metals that absorb slightly different wavelengths of radar, the coating can be customized to deceive specific radar systems.

    SMOOTHER SHAPE

    The B2 has two semi-flush air-intake vents, the hard edges of which can reflect radar. In one design seen in a patent from Northrop Grumman, the new bomber has four small vents rather than two large ones. The smaller vents can be buried more deeply in the wing, reducing the possibility of radar returns.

    SMARTER DECOYS

    To confuse radar defense systems, the new bomber will probably carry something like the Miniature Air Launched Decoy made by Raytheon. The modified drones use radar reflectors to create bomber-like signatures that divert attention from the actual bomber. The decoys fly on a preprogrammed course for up to 575 miles and may carry radar jammers to further confuse air defenses.

    RETRACTABLE WING

    In one design from Northrop Grumman, engineers included a canard wing on the plane’s nose, which would provide extra lift during takeoff and flight, allowing a smaller bomber to carry a heavier weapons payload. Because its straight lines and hard angles would reflect radar, the canard wing will most likely be designed to fold flush with the bomber’s body as the craft comes within range of defense systems.

    HEAVIER WEAPONS

    The new bomber will most likely have a single weapons bay, as opposed to the twin bays on the B2. It will still be able to carry conventional GPS-guided JDAM missiles, nuclear warheads and even the new 30,000-pound, bunker-busting Massive Ordnance Penetrator, but a single bay would reduce the cost of manufacturing—a major concern for designers on a relatively tight budget.

    The Successor to the B2 Stealth Bomber | Popular Science
     
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  3. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Lets see the Generations of Flying wing:

    [​IMG]



























    [​IMG]





















    [​IMG]


















    The Present and Future:

    [​IMG]
     
  4. HeinzGud

    HeinzGud Senior Member Senior Member

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    No Flying Wing aircraft will be flyable unless with the magic called microchip and computer!
     
  5. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Nope, Not Necessarily..









    :cool2:
     
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  6. pmaitra

    pmaitra Moderator Moderator

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    That is an excellent quote.

    Good one!

    Now, there are a couple of things to ponder:
    • A plane with wingspan smaller than the length will be able to pitch easily but cannot roll too much without getting unstable.
    • A plane with wingspan larger than the length will be able to roll easily but cannot pitch without getting unstable.
    • A plane without a tail cannot yaw beyond a certain, and a very limited, angle.
    [​IMG]

    Computer chips these days enable the plane to do a lot of things that were not possible earlier because roll-pitch-yaw was made more controllable with planes, tails, ailerons etc.. These items are being removed to reduce radar signature and computer chips are doing a lot of the stability control.
     
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  7. pmaitra

    pmaitra Moderator Moderator

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    Crazy landing with IL76MF

    Crazy landing with Ilyushin-76MF



    Tip: Use a pinch of salt!
     
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  8. Ray

    Ray The Chairman Defence Professionals Moderator

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    One must study the boomerang!
     
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  9. pmaitra

    pmaitra Moderator Moderator

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  10. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    By looking at the vid, One can imagine how hard its take to pull that Beast..

    Gud landing on pilots side..
     
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  11. pmaitra

    pmaitra Moderator Moderator

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    What is your opinion about the title of the video by the video poster?

    Actually, this is a question to all: How many think this is a crazy landing?
     
  12. HeinzGud

    HeinzGud Senior Member Senior Member

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    Computers don't just make aircraft's roll-pitch-yaw more controllable it makes modern day military aircraft stable like the SU 27 series and MiG 29. Therefore the similar mechanism is used in the B2 bomber to stable the aircraft because B2 is naturally unstable. Therefore to stabilize the miniature movements of the B2 a computer is necessary.

    ARTIFICIAL STABILITY & FLY-BY-WIRE CONTROL
     
  13. pmaitra

    pmaitra Moderator Moderator

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    True, but I was speaking w.r.t. some of the latest 'Beyond B2' planes.

    BTW, when TsAGI designed the MiG-29 and Sukhoi-27, they did not have computer chips in mind. The design was made to function with human inputs, not chips. These planes today use chips only as a matter of advancement but are not stealthy like the 'Beyond B2' planes.

    Also, HAL-LCA is also deliberately made naturally unstable, so that it is more manoeuverable. Even MiG-29 is very manoeuverable but in the latter case, much depended on the pilot's skill.
     
    Last edited: Dec 30, 2011
  14. HeinzGud

    HeinzGud Senior Member Senior Member

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    They had atlest some computers to control the maneuverability right??
     
  15. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    If the title is not so nice he wouldn't be getting 4,009,255 views..
     
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  16. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Fly by wire helps alot in long sessions but one can switch it off during combat..
     
  17. pmaitra

    pmaitra Moderator Moderator

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    Computers, well yeah, kind of. MiG-29s are famous for using vacuum tubes, not chips. :D It has no fly-by-wire control system.

    P.S.: I am talking about the early ones. However, yes, vacuum tubes can perform 'computation' in the classical sense.
     
    Last edited: Dec 30, 2011
  18. pmaitra

    pmaitra Moderator Moderator

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    You are right.

    You nailed it right here:

    Let's see what other's have to comment.
     
  19. plugwater

    plugwater Elite Member Elite Member

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    US is lucky to get F-35 before 2018.

    This bomber will after 2030, same time Russians finish their Pakda.

    Bombers do not need to defeat enemy air defenses, they go after all the defenses are neutralized, what US need is more F-22s.
     
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  20. HeinzGud

    HeinzGud Senior Member Senior Member

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    That won't happen under the current economic climate!
     
  21. HeinzGud

    HeinzGud Senior Member Senior Member

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    This clip is a tribute to the Soviet landing gear designs and the design engineers! :thumb:
     
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