Low temperature test system and test method for attitude and orbit control engine in vacuum environment

Abstract

The invention relates to a low-temperature test system and test method for an attitude-orbit control engine in a vacuum environment, which solves the problem that the existing engine cooling method cannot meet the temperature uniformity requirements of the engine body and electromagnetic valve, and cannot achieve different target temperature requirements. In this system, the liquid nitrogen supply unit is located at the bottom of the vacuum chamber to realize the supply of liquid nitrogen; the liquid nitrogen volatilization unit is located at the top of the vacuum chamber to realize the heating of liquid nitrogen; the recovery tank is used to realize the discharge of the medium from the liquid nitrogen volatilization unit Buffer treatment; the vacuum chamber heat sink unit is arranged inside the vacuum chamber to realize the low temperature environment in the vacuum chamber; the ejector unit is used to realize the vacuum environment of the vacuum chamber, and the propellant supply unit is used to provide the propellant for engine ignition; low temperature refrigeration The circulation unit is used to provide the medium for cooling the propellant supply unit; the refrigeration medium circulation supply unit is used to input the medium cooled by the low-temperature refrigeration circulation unit to the propellant supply unit.

Description

technical field [0001] The invention relates to the field of engine testing, in particular to a low-temperature testing system and testing method for an attitude-orbit control engine in a vacuum environment. Background technique [0002] With the further development of high-altitude and high-latitude weapon models, the performance requirements of the attitude and orbit control engines involved are increasing, and more realistic environmental tests are required before the engines are officially installed. The high-altitude simulation test technology, low-temperature test technology, high-temperature test technology, mechanical impact test and other sub-technologies involved have gradually developed and matured. [0003] The traditional environmental simulation test is carried out under the condition that the engine does not ignite, which can be regarded as a static environmental simulation test. However, with the increasing demand for product reliability, the static environme...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing engine cooling method cannot meet the temperature uniformity requirements of the engine body and solenoid valve, and cannot achieve different target temperature requirements. It provides a low-temperature test system for attitude and orbit control engines in a vacuum environment and Test method, the system can achieve low temperature environment, and can significantly improve the cooling rate and constant temperature effect of the engine and propellant

Images