Multi-nozzle rocket jet test system

Abstract

The invention comprises a multi-nozzle rocket jet test system. The system comprises a simulated rocket body, a test platform and a water spraying device used for reducing noise and protecting the testplatform; the outer contour dimension of the simulated rocket body and the outer contour dimension of the test platform are designed in proportion according to the actual structure size or are subjected to linear scaling, the total water spraying flow of the water spraying device is k<2> times of the total actual water spraying flow, and the water spraying speed of the water spraying device is consistent with that of an actual product; and the simulated rocket body is fixedly installed on the test platform according to a preset test height, and produces fuel gas during a test, temperature, pressure, heat flow and noise in the test process are collected through sensors arranged on the simulated rocket body and the test platform, and the k is the ratio between the outer contour size of thesimulated rocket body and the outer contour size of the test platform to the actual structure size of the same.

Description

technical field [0001] The invention relates to a multi-nozzle rocket jet flow test system. Background technique [0002] The thermal environment of the launch vehicle determines the safety of the launch vehicle. It is also the basis for the design of the comprehensive protection system of the rocket system and its subsystems, and the basis for the application of new technologies in the launch engineering of the launch vehicle. [0003] The jet flow test system is a special test system specially used to study the thermal environment of the rocket's take-off force before launch. The previous jet flow test system usually only simulates the jet flow noise in the free jet flow state, and does not consider the disturbance effect of the actual ground launch system on the gas flow or only adds local obstacles. The test data are mostly used for theoretical research and cannot reflect the actual launch process. The noise environment of the rocket body and the ground launch system un...

AI Technical Summary

Problems solved by technology

The previous jet flow test system usually only simulates the jet flow noise in the free jet flow state, without considering the disturbance effect of the actual ground launch system on the gas flow or only adding local obstacles. The test data are mostly used for theoretical research and cannot reflect the actual launch process. The noise environment of the rocket body and the ground launch system cannot guide the engineering design of the rocket body and the ground launch system, which has certain limitations.

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