High-speed aircraft having tilting propellers and being capable of taking off and landing vertically and flight control method of such high-speed aircraft

Abstract

The invention provides a high-speed aircraft having tilting propellers and being capable of taking off and landing vertically and a flight control method of such high-speed aircraft. The high-speed aircraft is characterized in that canard wings are mounted at the head of a fuselage of the high-speed aircraft, wings and a vertical fin are mounted in the front of and above the tail of the fuselage respectively, the tilting propellers are mounted at the outer ends of two tilting arms, the two tilting arms are symmetrically mounted on two sides of the front middle of the fuselage, each tilting arm, along with the corresponding tilting propeller, can be tilted synchronously around a tilting arm axis, and a tail rotor driven by an independent motor is mounted at the tail of the fuselage and can deflect leftwards and rightwards around a vertical fuselage axis. The high-speed aircraft having tilting propellers and being capable of taking off and landing vertically has the advantages that the tilting propellers are mounted at the middle of the fuselage between the canard wings and forward-swept main wings, and in the vertical takeoff and landing stage, downwash airflow of the propellers does not flow through any fixed airfoils with no blockage, so that hovering efficiency of the whole aircraft can be increased; smooth transition of the aircraft from the vertical takeoff and landing to high-speed flying can be realized and control of flight conversion is easier due to small aerodynamic interference between the downwash airflow of the propellers and the fixed airfoils in a tilting process.

Description

technical field [0001] The invention relates to the technical field of aviation aircraft, in particular to a high-speed aircraft capable of vertical take-off and landing with a tilting propeller and a flight control method thereof. Background technique [0002] The American V-22 "Osprey" aircraft is a typical tilt-rotor aircraft. The large-diameter rotors on both sides of the wings pull up the aircraft during vertical take-off and landing, and the automatic tilter controls the change of the rotor disc to control the aircraft to pitch, Rolling and yaw movement; after vertical take-off, the rotor tilts forward at a certain speed, the aircraft accelerates, and finally the aircraft becomes a propeller fixed-wing aircraft pulled by the rotors on both sides to fly at high speed. The tilt rotor aircraft uses the rotor steering as the propeller to increase the flight speed of the helicopter. It is the most mature high-speed helicopter so far. The "Osprey" aircraft has also entered t...

AI Technical Summary

Problems solved by technology

However, the "Osprey" aircraft is not perfect. One of its important shortcomings is that the rotors are arranged at both ends of the wings. During the vertical take-off and landing phase, the wings form a large area of ​​shielding against the downwash of the rotors, which reduces the hovering of the aircraft. Efficiency; In addition, during the rotor tilting process, the complex aerodynamic interference between the rotor downwash airflow and the wings also increases the difficulty of flight control during the tilting process

In response to this shortcoming of the "Osprey", some engineers also proposed to design the outer section of the wing to tilt together with the rotor to reduce the shielding of the downwash airflow of the rotor. However, this design can improve the hovering efficiency of the aircraft, but it does not Reduce the aerodynamic interference during the tilting process, and the increase of tilting parts will also increase the weight of the tilting mechanism

Images