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A Lightning Indirect Effect Protection Structure for Airborne Equipment

A lightning indirect effect and protection structure technology, which is applied to emergency protection circuit devices, electrical components, circuit devices, etc. for limiting overcurrent/overvoltage, can solve the problems of wide clamping voltage range and long response time, and achieve Short response time, reliable operation, simple and reliable structure

Active Publication Date: 2019-03-05
SHANGHAI AVIATION ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of wide clamping voltage range and long response time, and provide a new type of lightning indirect effect protection structure for airborne equipment

Method used

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  • A Lightning Indirect Effect Protection Structure for Airborne Equipment
  • A Lightning Indirect Effect Protection Structure for Airborne Equipment

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] See figure 1 , shown in the figure is a lightning indirect effect protection structure for airborne equipment, which is mainly composed of a metal shell 1, a lightning protection filter 3, an external connector 5 and an internal circuit board 6.

[0025] The metal casing is made of a good conductor, which can shield the lightning waves, so that the radiation energy generated by the lightning will not enter the interior of the airborne equipment. The metal shell has at least one side plate and a bottom plate. In this embodiment, the metal shell is a rectangular box. An accommodating space 10 is formed in the metal shell, and a mounting through hole 11 is formed on the side plate of the metal shell. The bottom plate is arranged on an aircraft structure 2 through the mounting angle pieces 8 and fastening screws 9 and the bottom plate is in surf...

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PUM

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Abstract

The invention relates to a lightning indirect effect protective structure of airborne equipment, which mainly comprises a metal casing, a lightning protection filter, an outer connector and an inner circuit board, wherein the lightning protection filter is connected with the metal casing through one or more lapping studs; the lightning protection filter is provided with a ground terminal; the lapping studs are electrically connected with the ground terminal; pins of the outer connector are electrically connected with the ground terminal through a lightning protection device. According to the invention, through the arrangement of two thermal insulating bodies, the thermal transmission between inner protective material and outer protective material is effectively prevented, and the quality of extruded cables is improved.

Description

technical field [0001] The invention relates to lightning protection for airborne equipment, in particular to a lightning indirect effect protection structure for airborne equipment. Background technique [0002] Modern aircraft put forward higher and higher requirements for environmental adaptability, especially safety. As a natural phenomenon, lightning occurs from time to time during the flight of the aircraft. Therefore, lightning, as a destructive energy, threatens the aircraft at any time. The normal work of the on-board equipment also threatens the safe operation of the aircraft. The lightning indirect effect protection design is of vital significance in ensuring flight safety. [0003] Based on the varistor circuit board, the varistor presents a high impedance under normal conditions, which is equivalent to an open circuit, but under the action of an external high-voltage pulse, it will present a low impedance, thereby providing a discharge channel for the lightning...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04
Inventor 万波
Owner SHANGHAI AVIATION ELECTRIC