Vertical takeoff and landing unmanned aerial vehicle with foldable fixed wings based on dual-duct fan power system

Abstract

The invention discloses a vertical takeoff and landing unmanned aerial vehicle with foldable fixed wings based on a dual-duct fan power system. A dual-duct fan power system which is horizontally arranged at the tail of the body of the unmanned aerial vehicle in a tail-driving arrangement is adopted, so that lifting force for vertical takeoff and landing and thrust for horizontal flying are provided for an aircraft; a control surface which is arranged at the exit of each duct in a deflected manner is used for providing vector thrust, so that quick attitude change is realized; wings adopt a folding wing configuration, when the aircraft vertically takes off and lands / flies at a low speed, the wings are folded to decrease the frontal area of cross wind, and when the aircraft flies horizontally, the wings are unfolded to obtain large lifting force; and combined optimization of ducts and the wings is adopted, the wings are arranged in a specific duct air flow region, the duct suction generates a Coanda effect at a wing edge, so that the properties of the wings are improved. Multi-mold flight tasks such as vertical takeoff and landing, high-speed cruise, and the like of the aircraft are realized; the vertical takeoff and landing aircraft is high in aerodynamic efficiency during hanging in the air / flying at a low speed; and the vertical takeoff and landing unmanned aerial vehicle is high in anti-disturbance capacity during takeoff and landing / hanging in the air. The vertical takeoff and landing unmanned aerial vehicle is low in energy consumption, small in noise and high in safe reliability.

Description

technical field

[0001] The invention relates to the technical field of aircraft, in particular to a foldable fixed-wing vertical take-off and landing unmanned aerial vehicle based on a dual-duct fan power system. Background technique

[0002] Vertical take-off and landing aircraft has always been a hot spot in aeronautical engineering research. In recent years, due to the progress of materials, energy, power and control technology, many advanced schemes have been applied to vertical take-off and landing aircraft. At present, the main configuration designs of several types of carrier-based vertical take-off and landing aircraft mainly include: tilting power mechanism (including tilting wings, etc.), auxiliary vertical lift and tailstock structure.

[0003] (1) Tilting rotor is currently the most typical vertical take-off and landing scheme. By rotating the rotor shaft, it can function as both a helicopter rotor and a fixed-wing propeller. The most typical aircraft is the Amer...

Images