Electrical system rocket-ground interface design method for improving fault-tolerant capability

Abstract

An electrical system rocket-ground interface design method for improving the fault-tolerant capability comprises the following steps that S1, pull-out connectors of a control system and a measurement system are double-layer pull-out connectors, and plug cable covers, plug shells and socket shells of the pull-out connectors are made of titanium alloy; s2, carrying out optimization design on point distribution of the pull-out connector; s3, arranging a pull-out switching electric separation connector at the first-stage tail section of the pull-out cable on the rocket, and after taking off, sending an electric separation instruction by the control system to separate a plug and a socket of the pull-out switching electric separation connector so as to cut off a TB signal; s4, performing protection design on the pull-out switching electric separation connector; and S5, installing and fixing the socket of the pull-out switching electric separation connector by adopting a metal plate bracket, and covering the outer side of the pull-out switching electric separation connector with a flexible heat shield. According to the invention, the fault-tolerant capability of the rocket-ground interface of the carrier rocket electrical system and the environment adaptability of the rocket-ground interface can be effectively improved.

Description

technical field [0001] The invention relates to a design method for an arrow-ground interface of an electrical system for improving fault tolerance, and belongs to the field of carrier rocket design. Background technique [0002] During the launch and flight of the launch vehicle, the bottom of the rocket will be subjected to heat flow for a long time. After a certain period of time, the solder of the detachable connector of the rocket control system and the measurement system has a melting failure mode. After analysis, if the first-degree failure of the pull-out cover is not closed, under the action of the heat flow environment at the bottom of the engine, the inside of the pull-out plug shell is heated by the jet from the tail of the rocket, which will cause the pull-out solder to melt after a certain period of time after take-off. Since the unplugged plug is mainly the key signals of the rocket control system and the measurement system, such as the communication and power...

AI Technical Summary

Problems solved by technology

Since the unplugging plug is mainly the key signal of the rocket control system and the measurement system, such as rocket-ground communication and power supply, in the case of the solder melting of the unplugging connector, it may cause short-circuiting of the internal point number and eventually lead to the failure of the control system and measurement system in flight. occurs, resulting in a flight loss

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