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A Control System for Low Vibration-to-Noise Ratio of Cargo Door of Transport Aircraft

A technology for control systems and transport aircraft, applied in aircraft doors, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of frequent opening and closing of safety valves, affecting aircraft flight safety, and hydraulic system whistling, etc., and achieve reliable switching. The effect of operation, small involvement and high reliability

Active Publication Date: 2020-01-14
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When closing the cargo hold door, due to the relatively large weight of the cargo hold door itself, the oil return pressure of the system reaches the upper limit of the inlet pressure of the safety valve, causing the safety valve to open and close frequently at the beginning of the cargo hold door closing, causing resonance in the hydraulic system, resulting in Howling of hydraulic system
This resonance and howling phenomenon seriously affects the flight safety of the aircraft

Method used

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  • A Control System for Low Vibration-to-Noise Ratio of Cargo Door of Transport Aircraft

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0010] The hydraulic control system of the cargo door is composed of the hydraulic system of the cargo bridge lock mechanism, the hydraulic system of the cargo bridge switch, and the hydraulic system of the cargo door switch. The opening of the cargo bridge has three positions: airborne, airdropped and ground. When airdropped, the cargo bridge opens below the horizontal line at an angle of 4°20′ with the horizontal line. When airborne, the cargo bridge opens to be flush with the horizontal line.

[0011] The cargo hold gate adopts a redundant design in technology, and the cargo hold gate has two forms of electric switch automatic control and manual valve control. When the electrical switch control form is used, a complete set of operating procedures can be automatically completed. The electrical switch automatic control is equipped with three op...

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Abstract

The invention discloses a low-vibration-noise-ratio control system of a transport plane cargo space gate, belongs to the technical field of aviation, comprises electronics and mechanics subjects, andrelates to a control principle technology. Through configuration of a cargo space gate driving device, the problems in the use process of a cargo space gate control technology are optimally designed,so that an airplane meets low-vibration-noise-ratio use requirements under complex environments.

Description

technical field [0001] The invention belongs to the driving technology of a cabin door of a medium-sized medium-range transport aircraft, and relates to a control technology of an aircraft cargo cabin door. Background technique [0002] With the continuous strengthening of transportation equipment, in addition to carrying heavy equipment and personnel, transport aircraft must also have the functions of airdrop and airborne. The cargo hold door is supplied with pressure to the opening cavity of the actuator by the electromagnetic valve, hydraulic lock and one-way throttle valve, and the cargo hold door is opened. The closing of the cargo hold door is through the hydraulic lock, which supplies pressure to the closing chamber of the actuator to close the cargo hold door. When closing the cargo hold door, due to the relatively large weight of the cargo hold door itself, the oil return pressure of the system reaches the upper limit of the inlet pressure of the safety valve, caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F15/50F15B13/02F15B11/08F15B21/10B64C1/14
CPCB64C1/1415E05F15/50E05Y2201/458E05Y2900/502E05Y2900/531F15B11/08F15B13/023F15B21/008F15B21/10
Inventor 杨美萍高荣军邢晓斌徐勇祖峰杨勇翟东张党锋邱伟田会平时洪宇党彦明胡志强陈跃霞庞旭辉卫小杰徐坚高超张会云
Owner SHAANXI AIRCRAFT CORPORATION
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