BLENDED WING BODY FLAPLESS VTOL UAV, CONTROLLING WITH BLEED AIR MOTION CONTROL SYSTEM

摘要

A blended wing body flapless unmanned aircraft, e.g., an Unmanned Aerial Vehicle or UAV, The form is composed of delta wings fitted with high pressure nozzle arrays (at the outer sections of the right and left wing) and the body structures, though the delta wings (inner sections) smoothly blended into the fuselage body. The tip portion (outer section) of each wing little bit swept forward. Horizontal stabilizers with high pressure nozzle arrays (with respect to produce artificial forces for pitching and yawing) are disposed at the rearward of the fuselage. Three thrust producer units or turbofan engines are disposed, one heavy thrust turbofan engine in the center of the fuselage with Z-shaped inlet duct along with the longitudinal axis of air vehicle with extended split exhaust directing output ducts rearward of the fuselage and another two small turbofan engines astride of the fuselage parallel to the longitudinal axis of air vehicle with the pair of exhaust directing T-Shaped duct with downward exhaust outlets, are respectively disposed alongside of the blending point of the fuselage and the wing such that exhaust outlets are located symmetrically with respect to each other on opposite sides of the longitudinal axis and along with the lateral axis. Bleed air motion control system (BAMCS) is disposed to control the orientation of the air vehicle through the pressure adjustment of incoming bleed air, suppljdng by the cold section (compressor) of the elected engine. This Unmanned Aerial Vehicle is capable of: 1. Vertical Take-off and Landing 2. Conventional Take-off and Landing 3. Hovering near the buildings at very low speed 4. Position holding at zero speed 5. Controlling without conventional primary flight control surfaces 6. Both high speed and low speed operations at maximum stealth mode