A compound aircraft with fixed wings and flapping wings

An aircraft and fixed-wing technology, applied in the field of aviation aircraft design, can solve the problems of poor flight flexibility, high requirements, easy to be affected by crosswinds, etc., and achieve the effects of expanding social and economic benefits, high stability, and improving lift characteristics

Active Publication Date: 2021-01-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The take-off and landing of existing fixed-wing aircraft has high requirements on the site, and it is easily affected by crosswinds during flight, and the flight flexibility is relatively poor

Method used

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  • A compound aircraft with fixed wings and flapping wings
  • A compound aircraft with fixed wings and flapping wings
  • A compound aircraft with fixed wings and flapping wings

Examples

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] Flapping-wing fixed-wing composite aircraft of the present invention, as figure 1 As shown, it includes a body 1, a wing lifting surface 2, an empennage 3 and a flapping wing drive system 4.

[0029] The body 1 includes a hanging bag 101 , a suspension beam 102 , a connecting rod 103 , a control tripod 104 and a wheel 105 . Among them, the hanging bag 101 is mainly used for hanging people or objects, and its shape is pupa-like and streamlined, with a blunt front edge and a sharp rear edge. Hanging bag 101 top is apart from hanging bag 101 rear end 1 / 3 hanging bag 101 front and back direction length positions and is equipped with vertical suspension beam 102, and suspension beam 102 bottom is fixed with hanging bag 101 top, and connecting rod 103 is installed on the top. The connecting rod 103 is horizontal along the front-back direction; the middle p...

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PUM

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Abstract

The invention discloses a fixed-wing flapping wing composite aircraft. The skin of the whole machine is made of flexible materials, and the inner and outer wing structures are designed; during the take-off process, the inner wing provides stable lift, and the outer wing Amplitude flapping and chordwise twisting produce full thrust and some lift. During the flight, gliding flight is the main method, and the lift is provided by the inner and outer wings, supplemented by the flapping of the outer wings with a lower flapping frequency, and the empennage to improve the flight stability of the aircraft. Adjust the flying attitude of the aircraft by changing the center of gravity of the suspended objects under the wing surface. In an emergency, the outer flapping wing can stop flapping and be locked at a designated position, parallel to the fixed wing to form a fixed wing layout and realize gliding flight. The invention has higher stability, safety and comfort, and can improve the lift characteristics of the whole micro-aircraft.

Description

technical field [0001] The invention belongs to the field of aviation vehicle design, and in particular relates to a compound aircraft with fixed wings and flapping wings. Background technique [0002] Based on the lift-thrust and maneuvering mechanism of large birds and bats, a fixed-wing and flapping-wing compound aircraft is proposed. The inner wing is fixed to provide a certain stable lift; the outer wing generates lift and thrust through flapping and chord torsion . [0003] The composite aircraft is a combination of the respective advantages of fixed-wing aircraft and flapping-wing aircraft, and has the characteristics of high aerodynamic efficiency and horizontal take-off and landing. The aircraft integrates lift and thrust, has fewer restrictions on the take-off and landing site, and can realize low-noise power flight. [0004] The take-off and landing of the existing fixed-wing aircraft has high requirements on the site, is easily affected by crosswinds during fli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C33/02B64C39/00
CPCB64C33/02B64C39/00B64C2039/105
Inventor 李道春孙毅邵浩原李华东张尧
Owner BEIHANG UNIV
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