Ground full-size equivalent test method for low-temperature pressurized delivery system of carrier rocket

Abstract

The invention discloses a ground full-size equivalent test method for a low-temperature pressurized delivery system of a carrier rocket, which comprises the steps of providing a ground full-size test module of the carrier rocket, wherein the ground full-size test module comprises a full-size storage tank and a low-temperature pressurization conveying system; pressurizing a storage tank by adopting normal-temperature helium, and setting a pressurization control band, a filling liquid level height, an initial air pillow and a propellant temperature according to the pressure of the storage tank of the carrier rocket in a real flight state; when the initial parameter of the propellant filling liquid level height meets the requirement, opening a throttling orifice plate of a corresponding discharge pipe based on the output quantity of the carrier rocket propellant in the real flight state, and recording working condition parameters; controlling working condition characteristic parameters, carrying out data analysis according to the consistency comparison condition with the flight state characteristic parameters, and optimizing the flight state parameters. According to the test method, the number of whole-system power test run and flight test times of the carrier rocket can be reduced.

Description

technical field [0001] The invention belongs to the technical field of launch vehicle tests, and in particular relates to a ground full-scale equivalent test method for a launch vehicle low-temperature pressurized delivery system. Background technique [0002] Before launching the launch vehicle, a large number of ground tests need to be carried out to fully assess the rationality of the system scheme, the correctness of functional indicators, and the coverage of performance tests. The pressurized delivery system is an important basis for the power of the launch vehicle, which directly affects the success or failure of the launch mission. In particular, it is necessary to conduct sufficient ground test verification and obtain complete test data. Space X in the United States attaches great importance to the ground test of the power system. The Falcon 9 launch vehicle needs to undergo three ignitions before launch. The third time was a short-term ignition before the first sub...

AI Technical Summary

Problems solved by technology

At the same time, more power system tests have brought new challenges: first, the test cost is too high, and the complete ground test directly increases the rocket launch cost; second, the planned schedule is extended, and the cumbersome test process will lag behind the development and production progress to a certain extent ; Third, safety risks are relatively high, and safety accidents caused by human errors still exist in the test

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