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Vibration damping seat and vibration damping method for aircraft

An aircraft and seat technology, applied in the field of aircraft, can solve the problems of low elastic modal frequency of aircraft, uncomfortable pilots, affecting flight safety, etc., so as to improve ride comfort, improve safety and stability, and reduce coupled vibration. Effect

Pending Publication Date: 2021-10-19
COMAC +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Civilian airliners generally have a large size and weight, and the fuselage is a slender body. The elastic mode frequency of the aircraft is low and the modes are dense. External excitation can easily arouse the elastic vibration of the fuselage, and the vibration of the fuselage will be transmitted to the pilot through the seat. , the pilot transmits to the joystick, and the movement of the joystick generates commands, which will drive the deflection of the rudder surface, and the deflection of the rudder surface will further stimulate the vibration of the airframe, resulting in the coupled vibration of the pilot-elastic aircraft, affecting flight safety and causing discomfort to the pilot

Method used

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  • Vibration damping seat and vibration damping method for aircraft
  • Vibration damping seat and vibration damping method for aircraft
  • Vibration damping seat and vibration damping method for aircraft

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0031] As mentioned above, due to the "elasticity problem" of existing aircraft, the fuselage will continuously vibrate during flight, and the vibration of the fuselage will be transmitted through the seat, causing uncomfortable rides. For this reason, the present invention provides an improved vibration-damping seat for an aircraft, which is used for reducing seat vibration and improving ride comfort. Preferably, the natural vibration frequency of the seat can be adjusted to prevent the coupling vibration between the pilot and the elastic body through the seat and improve the safety and stability of the aircraft.

[0032] figure 1 is a schematic diagram of a vibration-absorbing seat for an aircraft according to an embodiment of the present invention. The shock-absor...

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PUM

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Abstract

A vibration damping seat and a vibration damping method for an aircraft are disclosed. The vibration damping seat can comprise a base and a seat basin, the bottom of the seat basin is supported by the base, the seat basin is provided with a cushion opposite to the bottom, the seat basin comprises an active vibration damping device installed between the bottom of the seat basin and the cushion, the active vibration damping device comprises a servo control air pump and an air cylinder, the air cylinder is provided with a piston plate which is used for sealing gas in the air cylinder and can move in the air cylinder, the piston plate is connected with the cushion through a telescopic rod, and the servo control air pump inflates the air cylinder when detecting vibration. The seat vibration damping method for the aircraft is also disclosed.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to a vibration-damping seat and a vibration-damping method for the aircraft. Background technique [0002] The design of modern aircraft generally pursues high speed, high maneuverability and agility, which makes modern aircraft more and more characterized by high speed, light structure, large flexibility and low damping. These design features lead to elastic deformation of the aircraft structure (It may be referred to simply as the "elasticity" problem) is also becoming more and more prominent. [0003] Civilian airliners generally have a large size and weight, and the fuselage is a slender body. The elastic mode frequency of the aircraft is low and the modes are dense. External excitation can easily arouse the elastic vibration of the fuselage, and the vibration of the fuselage will be transmitted to the pilot through the seat. , the pilot transmits it to the joystick, and the movement of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D11/06
CPCB64D11/0619B64D11/0689
Inventor 常晨丁路宁范石磊孙亚军吴善强胡筠晔
Owner COMAC
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