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Seesaw type unmanned helicopter rotor wing structure and chordwise dynamic balance trimming method

An unmanned helicopter and seesaw technology, which is applied to the rotor structure of seesaw-type unmanned helicopter and the field of chordwise dynamic balance and trim, can solve the problems of poor economy and safety of unmanned helicopters, increased structural complexity, and increased weight of unmanned helicopters. , to achieve the effect of improving dynamic balance and trim efficiency, reducing maintenance time, improving economy and safety

Active Publication Date: 2021-08-13
四川腾盾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above two chordwise dynamic balance adjustment methods will increase the weight of the unmanned helicopter, and at the same time increase the structural complexity, which will eventually lead to poor economy and safety of the unmanned helicopter.

Method used

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  • Seesaw type unmanned helicopter rotor wing structure and chordwise dynamic balance trimming method
  • Seesaw type unmanned helicopter rotor wing structure and chordwise dynamic balance trimming method
  • Seesaw type unmanned helicopter rotor wing structure and chordwise dynamic balance trimming method

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Embodiment 1

[0036] In view of the existing UAV rotor dynamic balance trim has the characteristics of complex trim structure, low efficiency and heavy weight, this embodiment optimizes and proposes improved solutions to solve the problems in the prior art.

[0037] Such as figure 1 , figure 2As shown, a seesaw type unmanned helicopter rotor structure includes a rotor shaft 1, a rotor hub is arranged on the rotor shaft 1, a drum-shaped pendant 6 is arranged on the rotor shaft 1 and is connected and matched with the rotor hub through the drum-shaped pendant 6 ; The drum-shaped pendant 6 is symmetrically provided with a straight arm 7, the rotor hub and the straight arm 7 are socketed, and a fitted inner bush 15 and an outer bush 16 are arranged between the rotor hub and the straight arm 7 , the inner bushing 15 is sleeved on the straight arm 7, the outer bushing 16 is sleeved on the inner bushing 15 and fastened with the rotor hub; the inner side of the inner bushing 15 is connected to th...

Embodiment 2

[0051] The content of the above-mentioned embodiment discloses the rotor structure of the unmanned helicopter, and this embodiment has described the trimming method of the chord-wise dynamic balance of the rotor of the unmanned helicopter, which is explained here:

[0052] A seesaw type unmanned helicopter rotor chord dynamic balance trimming method, applied to the above-mentioned helicopter screw structure, comprising:

[0053] S01: Weigh the rotor hub and blades m 1 , and select the adjusting gasket according to the preset thickness value, and install it on the rotor hub;

[0054] S02: Measure the dynamic unbalance weight after installation m 2 and the axial distance from the dynamic unbalance to the rotor axis r , to calculate the adjustment amount of the dynamic balance d ;

[0055] S03: According to the calculated dynamic balance adjustment d , the thickness of the adjustment gasket needs to be increased to increase the thickness d , the thickness of the shim that...

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Abstract

The invention relates to the technical field of unmanned helicopters, and particularly discloses a seesaw type unmanned helicopter rotor structure and a chordwise dynamic balance trimming method. The rotor structure is simple in overall structure and convenient to operate, chordwise dynamic balance trimming of a rotor can be achieved under the condition that independent balance weight is not carried out, the dynamic balance trimming efficiency of the unmanned aerial vehicle rotor wing is greatly improved, and the trimming operation of dynamic balance of the unmanned aerial vehicle rotor wing is simplified. According to the method disclosed by the invention, the chordwise dynamic balance of the rotor wing can be quickly and conveniently adjusted without additionally adding a counter weight or adding a structure for mounting the counter weight. The weight of the counter weight can be effectively reduced; the dynamic balance adjustment time is shortened; the complexity of the aircraft structure is reduced; the maintenance time of the unmanned aerial vehicle is reduced. And the economy and the safety of the unmanned helicopter are improved.

Description

technical field [0001] The invention relates to the technical field of unmanned helicopters, and specifically discloses a seesaw type unmanned helicopter rotor structure and a chord-wise dynamic balance trimming method. Background technique [0002] During the use of unmanned helicopters, the alternating loads generated by rotating components such as rotors, tail rotors, engines, and transmission mechanisms will cause vibrations in the helicopter body structure. The vibration of the body will bring serious consequences to the use of the helicopter: it will cause vibration fatigue to the main stress-bearing parts and instrumentation equipment of the helicopter, thereby reducing the service life. Among the rotating parts of unmanned helicopters, the rotor produces the largest alternating load, which is the main vibration source of the helicopter. Therefore, rotor dynamic balance is especially important for helicopters. [0003] Seesaw unmanned helicopter rotor dynamic balanc...

Claims

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Application Information

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IPC IPC(8): B64C27/32
CPCB64C27/32B64U10/10
Inventor 金曦曾东冉峻塽王定桥王超锋温泉源
Owner 四川腾盾科技有限公司
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