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• Aircraft typically carry around enough structure to keep flutter 15% above the design dive speed (V D), which has margin above the max operating speed (V MO) • Instead, design the wings with less structure and let flutter occur closer to V D and use the control system to provide the airspeed margin from instability.
The Lockheed Martin X-56 is an American modular unmanned aerial vehicle that is being designed to explore High-Altitude Long Endurance (HALE) flight technologies for use in future military unmanned reconnaissance aircraft.
The maximum level flight speed is 135 kn, and the aircraft can achieve up to 150 kn in a dive. The aircraft carries 82 lb of Jet-A fuel in a tail-mounted fuel tank.
X-56A Multi-Utility Technology Test-bed Takeoff rotation physics •Rotation can be thought of as building up of angle of attack and transferring the weight of the airplane from the main gear to an aerodynamic lift force on the wing. • For statically stable aircraft (ac aft of cg), the lift force is nearly
Their work proved that flutter behavior can be accurately predicted and addressed through the creation of a new design paradigm of active control. This active control method produced a 75 percent increase in BFF speed, as proven in a series of flight tests. X-56A: Breaking the Flutter Barrier.
6 Ιαν 2020 · The X-56A Multi-Utility Technology Testbed (MUTT) is a subscale airplane that was designed as an experimental flight research platform for improving aeroelastic modeling and control...
13 Ιαν 2014 · The X-56 Multi-Utility Technology Testbed aircraft system is a versatile experimental research flight platform. The system was primarily designed to investigate active control of...
