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A folding rotor mechanism

A technology of rotor and intermediate structure, which is applied in the field of mechanism design of foldable and expandable rotor system and mechanical structure design of foldable and expandable rotors, can solve the problems that the composite aircraft is difficult to achieve high speed and has few applications, and achieves simple and reliable structure and improved performance. The effect of forward flying speed and low resistance

Active Publication Date: 2019-04-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the aerodynamic interference between the rotor and the fixed wing, it is still difficult for the compound aircraft to achieve high speed in the fixed wing mode, which leads to its limited practical application.

Method used

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  • A folding rotor mechanism
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Embodiment Construction

[0027] The folding rotor mechanism proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The invention provides a folding rotor mechanism, the overall shape is as follows figure 1 As shown, the folding rotor mechanism includes a disc 1 and four blades 8 . The disc 1 is thick in the middle and thin around, and has four openings with equal angles around it, and the two openings at opposite positions have the same height, corresponding to the positions of the four paddles 8 respectively. The disc 1 is fixedly connected with the upper end of the rotor main shaft 14, rotates with the rotor main shaft 14, and has an opening below for the passage of the rotor main shaft 14 and the variable pitch joystick.

[0029] The folding rotor mechanism provided by the present invention has two states of unfolding and folding. When the blade 8 is unfolded, as figure 2 As shown, the blades 8 protrude from the disk 1, and the...

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Abstract

The invention discloses a folding rotor mechanism, which belongs to the field of compound aircraft rotor system design. The foldable rotor mechanism is applicable to the rotor system of a compound aircraft, including a four-blade rotor system with a double-layer hub structure design and a double-joint foldable structure design. The three sections of the rotor are relatively rotated through the joints through the worm gear mechanism, which can Realize the high-speed flight of the aircraft in fixed-wing mode or the folding of the rotor when landing on the ship. The structure of the present invention is simple and reliable, meets the design strength and rigidity requirements, and will not have adverse effects on the aircraft; the foldable rotor provided by the present invention can be accommodated in the disc, so that the resistance is smaller when flying forward, and the disc can also provide a part Lift, improve the flight performance of composite aircraft.

Description

technical field [0001] The invention belongs to the field of compound aircraft rotor system design, and specifically relates to a design of a retractable rotor system mechanism, mainly relating to the mechanical structure design of a retractable rotor to realize the folding of the rotor. Background technique [0002] Composite aircraft is a new type of aircraft that integrates the respective advantages of fixed-wing aircraft and helicopters and makes up for their respective performance defects. It can not only have the performance of helicopter vertical take-off and landing, but also have the characteristics of fixed-wing high-speed flight. This good performance indicates that the composite aircraft has an excellent development prospect. [0003] The "new" of composite aircraft is not new in concept, but new in application. The composite aircraft has both a rotor system and a fixed-wing system. In the helicopter mode, it achieves vertical take-off and landing through the ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C27/30B64C27/54B64C27/68
CPCB64C27/30B64C27/54B64C27/68B64U10/10B64U30/20
Inventor 万志强蒋崇文崔运祥李道春张啸迟严德王耀坤鲍蕊
Owner BEIHANG UNIV
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