Variable wing four-axis aircraft

Abstract

The invention discloses a variable wing four-axis aircraft which comprises a fuselage and a pair of wings arranged on the two sides of the fuselage, wherein wing shafts are respectively arranged on front and rear sides of the wings; the wing shafts are clung to the two sides of the wings; propellers are arranged at the front ends of the wing shafts; the wings are hinged on the left and right sides of the top of the fuselage through an electric rotating shaft; a tail wing is arranged on the rear side of the top of the fuselage. In a takeoff stage, the wings and the tail wing are under a folded state and are fused with the fuselage, so that the atmospheric pressure endured by the fuselage at the takeoff moment can be reduced and the energy consumption can be reduced; in a landing stage, the wings and the tail wing are under the state the same as the state in the takeoff stage, the ground effect is reduced and the vertical takeoff and landing can be realized; in a normal flying process, the wings and the tail wing are under an unfolded state, can supply the lifting power for the aircraft and can realize higher energy efficiency ratio; two structures are smartly combined, and higher lifting power of the aircraft is acquired while the atmospheric pressure endured by the fuselage at the takeoff and landing moment is reduced.

Description

technical field [0001] The invention relates to a small aircraft, in particular to a variable-wing quadcopter. Background technique [0002] The four-axis UAV in the prior art mainly provides lift through the propeller to realize the flight of manned and loaded objects. Its operation is relatively simple, easy to get started, and can easily realize vertical take-off and landing, hovering and other operations, and has no requirements for the environment; However, providing all the power required by the propeller alone has a low energy efficiency ratio. [0003] Fixed-wing aircraft rely on wings with a large aspect ratio to provide lift, which has a high energy efficiency ratio, but has high requirements for the flying environment, and requires a long and flat runway to take off and land, and the operation is relatively complicated. Contents of the invention [0004] In view of the above problems, the present invention provides a variable-wing quadcopter. [0005] A vari...

AI Technical Summary

Problems solved by technology

[0002] The four-axis UAV in the prior art mainly provides lift through the propeller to realize the flight of manned and loaded objects. Its operation is relatively simple, easy to get started, and can easily realize vertical take-off and landing, hovering and other operations, and has no requirements for the environment; However, to provide all the power required by the propeller alone, the energy efficiency ratio is low

[0003] Fixed-wing aircraft rely on wings with a large aspect ratio to provide lift, which has a high energy efficiency ratio, but has high requirements for the flying environment, and requires a long and flat runway to take off and land, and the operation is relatively complicated

Images