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Tilt rotor mechanism using shape memory material, folding structure and aircraft

A technology of tilt rotor and memory material, which is applied in the field of folding structure, aircraft and tilt rotor mechanism, can solve the problems of difficult research and achieve the effect of reducing induced resistance and simplifying structure

Pending Publication Date: 2022-08-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the multi-disciplinary fields involved, the research is difficult
The difficulty of its mechanism design lies mainly in the transition schemes of different flight states. The existing solutions all rely on complex hydraulic drive and mechanical transmission structures to realize

Method used

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  • Tilt rotor mechanism using shape memory material, folding structure and aircraft
  • Tilt rotor mechanism using shape memory material, folding structure and aircraft
  • Tilt rotor mechanism using shape memory material, folding structure and aircraft

Examples

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Effect test

Embodiment 1

[0062] Embodiment 1 of the present invention provides a tilt-rotor aircraft using shape memory materials such as Figure 1-2 As shown, the present embodiment is a flying wing+V tail layout, including a fuselage 1, a tilt-rotor mechanism 3, a V-tail 5, a propulsion rotor 6 and a folding structure 4; the tilt-rotor mechanism 3 includes a rotary drive mechanism, an applied shape memory The tilting mechanism and the rotor mechanism of the material, the rotation driving mechanism includes the driving motor 311, the first cylindrical gear 312, the second cylindrical gear 313, the transmission shaft 314 and the first bevel gear, the tilting mechanism includes the tilting shaft 323 and the tilting SMA Coil spring 322, the rotor mechanism includes tilt rotor 317. The folding structure 4 includes: a support frame 41, a fixed shaft 42, a folding SMA coil spring 43 and a sleeve connecting piece 44; the flying wing type aerodynamic layout has the advantage of large lift, and can generate s...

Embodiment 2

[0079] Embodiment 2 of the present invention provides a tilt-rotor mechanism in Embodiment 1.

Embodiment 3

[0081] Embodiment 3 of the present invention provides a folded structure in Embodiment 1.

[0082] Based on the above embodiments, the advantages of the present invention are as follows:

[0083] 1. Through the central rotor, it can tilt between the horizontal and vertical positions, so that the aircraft can switch between vertical take-off and landing and fast forward flight.

[0084] 2. The winglets on both sides can be folded separately to form winglets, which can solve the lift redundancy problem in fast forward flight, and reduce the induced resistance, so that the aircraft has good aerodynamic characteristics under high-speed and low-speed conditions. , the differential control of the wings on both sides can also improve the maneuverability of the aircraft.

[0085] 3. The tilting mechanism and the wing tip folding mechanism are driven by the coil spring shape memory alloy, which has a large driving force and overcomes the disadvantage of small deformation of the shape ...

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Abstract

The invention relates to a tilt rotor mechanism applying a shape memory material, a folding structure and an aircraft. The tilt rotor mechanism comprises a rotation driving mechanism, a tilt mechanism applying the shape memory material and a rotor mechanism, according to the unmanned aerial vehicle, the design of the tilting mechanism is realized by applying a shape memory material, and the structure for enabling the fuselage to tilt in a longitudinal vertical plane is simplified.

Description

technical field [0001] The invention relates to the technical field of aircraft design, in particular to a tilt-rotor mechanism, a folding structure and an aircraft using shape memory materials. Background technique [0002] Tilt-rotor aircraft is a relatively new type of aircraft that takes into account the advantages of fixed-wing and multi-rotor, avoiding fixed-wing aircraft that cannot take off and land vertically, complex structure, poor stability, etc. It can achieve fast and efficient long flight time, vertical take-off and landing, fixed-point hovering, etc., and has huge application prospects in many aspects of military and civilian use. However, due to the multi-disciplinary fields involved, the research is difficult. The difficulty of its mechanism design mainly lies in the transition scheme of different flight states, and the existing solutions all rely on complex hydraulic drive and mechanical transmission structure. The flight state transition scheme includes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C3/56B64C27/52B64C27/22B64C27/10B64C27/12
CPCB64C3/56B64C27/52B64C27/22B64C27/10B64C27/12Y02T50/40
Inventor 鲜雨哲门小凡刘京奥丁俊杰廖璨苏时秀邹鸿生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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