Military Review

NASA Completes 8 Monthly Boeing X-48C Drone Tests

23

The Americans recently completed testing an experimental drone Boeing X-48C. It is expected that such devices will enter the service of the US Army during 15-20 years.


The tests were conducted jointly by Boeing and the NASA research center for eight months. During this time, Boeing X-48C completed 30 flights. The drone, on average, reaches speeds of up to 226 kilometers per hour and is gaining more than three kilometers in altitude.

The device was created on the concept of "mixed wing" (Blended Wing Body - BWB).

Aerodynamic BWB schemes are more effective than the usual options in terms of aerodynamics and mass distribution. Due to this, such UAVs are more economical. The X-48 series appeared in the 2003 year, the model C became the third in a row. The previous version of the Boeing X-48B was named the best invention of the 2007 of the year according to the magazine Times.

The new model received two turbojet engines of 89 pounds, instead of three engines of 50 pounds, as was the case with X-48B. In addition, on model C, the wings were moved closer to the engines and the tail section was extended two feet.

“We showed that the BWB scheme aircraft, which offers tremendous prospects for significant fuel efficiency and reduced noise, can be controlled as efficiently as conventional aircraft during takeoff, landing and other low-speed flight modes,” said BWB program manager Bob Liebeck.

The Boeing X-48C is a large-scale model of a heavy subsonic plane with a triangular tailless circuit that effectively merges the wing with the fuselage.

“With the completion of the flight tests of the X-48C, we achieved our goals in establishing take-off characteristics and proving the controllability of the concept in low-speed mode throughout all flight tests. A very quiet and effective concept has proven to be promising for meeting NASA's environmental goals in future aircraft designs, ”says the Director of the Environmentally Responsible Program. aviation"(Environmentally Responsible Aviation) Faye Choker.

Boeing representatives say the company will continue to develop BWB technology in the future.
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  1. d1m1drol
    d1m1drol April 18 2013 12: 07
    +7
    I want to see our war birds not inferior Amers and Jews! I want it all!
    1. Russian
      Russian April 18 2013 12: 27
      +1
      Another car for killing civilians.
      1. snek
        snek April 18 2013 12: 46
        +1
        Quote: р_у_с_с_к_и_й
        Another car for killing civilians.

        This UAV is a test bench for testing the technologies of the future passenger aircraft.
        1. Russian
          Russian April 18 2013 14: 11
          +1
          It is expected that such devices will enter the service of the US Army for 15-20 years.

          Passenger plane in the service of the army? Oh well
          1. snek
            snek April 18 2013 18: 51
            +2
            Quote: р_у_с_с_к_и_й
            Passenger plane in the service of the army? Oh well

            Well, what can you do, now journalists often do not understand what they are writing about. If you want to know what kind of car it is, google it.
    2. Geisenberg
      Geisenberg April 18 2013 16: 22
      +1
      Quote: d1m1drol
      I want to see our war birds not inferior Amers and Jews! I want it all!


      Become a kulman ... hi
      1. Nayhas
        Nayhas April 18 2013 17: 26
        +3
        Would he agree? In the sense of Kulman?
        1. d1m1drol
          d1m1drol April 19 2013 10: 48
          0
          I have German .. he agrees on everything for a long time! hi
      2. d1m1drol
        d1m1drol April 19 2013 10: 47
        0
        I draw on the culmination of the building) and let the engineers deal with the machines and steel birds)
  2. svp67
    svp67 April 18 2013 12: 10
    +2
    The news is not positive for us, it's time for us to "surprise" the world with perfect drones ...
    1. Gluxar_
      Gluxar_ April 18 2013 12: 24
      +3
      Quote: svp67
      The news is not positive for us, it's time for us to "surprise" the world with perfect drones ...

      What is the perfection here? And what kind of drone is it? A drone with unknown characteristics, then how the Americans are able to sell their "exclusivity" we are well aware of their examples with the f-35 and f-22.

      As for unmanned drones, our "Buran" is in the first place in this case, and no one has moved it in 20 years. As for today, attack drones or drones are still a secret weapon. And the reasonable command would not shout about its capabilities, the Americans always need money, hence the "talkativeness". What I see in the photo can be built by schoolchildren from the flying club, if they are given at least a tenth of the funding that the American team had.
  3. engineer74
    engineer74 April 18 2013 12: 32
    0
    A very quiet and effective concept has proven to be promising for satisfying NASA's environmental goals in future aircraft designs, ”says Fay Collier, Director of the Environmentally Responsible Aviation program.

    Smiled, environmentally friendly aircraft and the production of shale oil and gas, right the highest harmony! good
    1. rpek32
      rpek32 April 18 2013 14: 26
      0
      different organizations, nothing surprising.
  4. Vtel
    Vtel April 18 2013 13: 35
    0
    NASA Completes 8 Monthly Boeing X-48C Drone Tests

    Finished early - premature however!
  5. Takashi
    Takashi April 18 2013 13: 41
    0
    huge request, for those who translate articles - please translate non-metric measures into those adopted in Russia (m-kg-s) (in extreme cases, to the old cm-s-s)
  6. Kuzkin Batyan
    Kuzkin Batyan April 18 2013 13: 48
    0
    Judging by the photo, teenagers experienced)))
  7. Naval
    Naval April 18 2013 13: 48
    0
    Scolding in vain, this is only a technique, and a good one, the main thing is who controls it and what goals it sets.
  8. shpuntik
    shpuntik April 18 2013 16: 25
    +2
    Let him fly ... Perhaps he will sit somewhere, in our area, for refueling. Then native craftsmen will see what is inside of him. :-) And if he doesn’t sit down, then there are still Rosenbergs ...
    http://www.bbc.co.uk/russian/international/2011/04/110405_rosenberg_soviet_bomb.
    shtml

    Unless of course we will honor the commandments ...
  9. Simple
    Simple April 18 2013 19: 48
    0
    In April 2012, NASA and the U.S. Army completed a wind tunnel study of a program to study two convertiplane models: (HETR) (LCTR). Tests were conducted in the US Army 7 - on the 10-foot wind tunnel of NASA Ames Research Center. The data obtained in this test will be used to verify CFD instruments and to assist in the development of models and simulations of flight dynamics.

    Approximately 1 / 20th scale models of HETR and LCTR gliders were placed without rotors on an 3 rack-mount system connected to the force of the measurement scales that sit below the working part of the wind tunnel. This system made it possible to measure all six forces and moments acting on the body of the aircraft. In addition to the force and moment of measurement, visualization of the flow using beams, infrared images, and flow rates (see below) were used to determine the boundaries of the transition layer and the region of separation of the flow.

    Both models were tested in airplane mode, with engine nacelles parallel to the flow, and air speeds up to 200 nodes. The angle of attack and slip angle for this configuration is from -10 to + 10 degrees. In addition, the LCTR model was tested in helicopter mode, with engine nacelles tilted from 60 to 95 degrees, and speeds up to 80 knots. For this part of the test, the glide angle ranged from -180 to + 180 degrees, the angle of attack ranges from -10 to + 10 degrees.

    Several wing configurations have been tested for both the High Efficiency Army Tilt Rotor (HETR) and Large Civil Tilt Rotor (LCTR models): full glider, full glider wing without extensions, full glider without gondolas, and full glider without gondolas or wing spouts.

    The LCTR and HETR are similar to an airplane, so a significant amount of equipment was split between the two models. Both used the same support system and they shared the same wing and gondolas. The design for the "side unit", which is the anchorage point for the wings and fuselage panels, was the same for both, but two identical copies were made so that one model could be in the tunnel while the others were being built up. Fuselages, tails, and wingtips were different, but were interchangeable between the two models. This common hardware approach allowed wallpaper tests to be carried out at significantly less cost and time than would be necessary for two independent test programs.
    The NACA resource for this publication is currently closed:
    The NASA technical reports server will be unavailable for public access
    while the agency conducts a review of the site's content to ensure that it
    does not contain technical information that is subject to US export control laws
    and regulations and that the appropriate reviews were performed.
    The site will return to service when the review is complete.
    We apologize for any inconvenience this may cause.
    (Sorry the pictures did not have time to upload repeat )

    http://www.dept.aoe.vt.edu/~mason/Mason_f/VTRAFT_final_report.pdf

    1. ars_pro
      ars_pro April 18 2013 22: 47
      0
      and what prevents the screws from changing the thrust around the circumference, and whether this gives any advantage at least in something, and hang the reagent on the sides, and fold the wings so that they would not interfere
    2. ars_pro
      ars_pro April 18 2013 23: 10
      0
      and what prevents the screws from changing the thrust around the circumference, and whether this will give an advantage in any way, is it about rotorcraft and will learn to fold the screws in less time, so that it wouldn’t interfere with reactive speed, and from the bottom the container was put forward with the expected loads it would be more interesting, but is it worth it
  10. Simple
    Simple April 18 2013 20: 29
    0
    Well, finally, the publication is available:


    http://rotorcraft.arc.nasa.gov/Research/Programs/LCTR.html

    http://rotorcraft.arc.nasa.gov/Research/Programs/scaleModel.html


    Large Civil Tilt Rotor (LCTR):
  11. Simple
    Simple April 18 2013 20: 32
    0
    scale_model_7x10

    High Efficiency Army Tilt Rotor (HETR):
  12. darksoul
    darksoul April 18 2013 20: 59
    0
    We look forward to our strike UAV altair
  13. luiswoo
    luiswoo April 18 2013 21: 07
    0
    Quote: wikipedia
    According to Boeing’s calculations, the 480-seat version of the BWB will consume 32% less fuel than the Airbus A380-700. But they are much more complex in terms of controllability and maneuverability of the flight.

    Not a sour increase in savings. At the expense of handling it is not clear - now you can make a brick fly like a swallow.