Thermal protection structure of flight parameter recorder

Abstract

The invention relates to the field of flight parameter recorders, in particular to a thermal protection structure of a flight parameter recorder. The thermal protection structure comprises an outer structural shell, an inner structural shell, a chip shell, silica gel, a data chip, an inner shell bottom cover and an outer structure bottom cover. The nano thermal insulation material thermal insulation technology, the phase change thermal storage material thermal absorption technology and the high-blackness thermal reflecting coating thermal dissipation technology are comprehensively adopted for the flight parameter recorder, and the thermal shock resistance of the flight parameter recorder is improved. Firstly, one part of heat transferred to the surface of the flight parameter recorder through thermal impact is reflected by a thermal reflecting coating in a thermal radiation thermal dissipation mode; then, under blocking of a nano thermal insulation material, thermal flow flowing into the flight parameter recorder is greatly reduced; finally, the thermal flow is absorbed by the phase change thermal storage material in the flight parameter recorder, and the temperature of the flying parameter chip is greatly reduced under thermal shock. Meanwhile, a thermal insulation material of the flight parameter recorder is small in density, and the weight of the flight parameter recorder can be greatly reduced under the condition of guaranteeing thermal insulation performance.

Description

technical field [0001] The invention relates to the field of flight parameter recorders, in particular to a thermal protection structure of the flight parameter recorder. Background technique [0002] The flight parameter recorder is used to record the working state of the aircraft and the operation of the pilot, providing an objective and effective basis for the investigation of flight accidents. In order to ensure that the data in the recorder can be completely preserved after the crash, the flight parameter recorder needs to have the ability to survive high temperature fire (1100°C) and medium temperature baking (260°C). The European Aeronautical Equipment Organization's ED-112 "Minimum Performance Requirements for Crash Airborne Recording Systems" and the US Federal Aviation Administration's TSO-C124b "Technical Standards for Flight Data Recording Systems" both stipulate that the flight parameter recorder must meet the following thermal protection requirements : 1) The ...

AI Technical Summary

Problems solved by technology

However, with the improvement of thermal shock standards, a single heat insulation or heat storage technology can not meet the requirements of the thermal protection standard of flight ginseng recorders. protective structure

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