Calibration measurement device for steady-state thrust of 4-25N attitude control engine in thermal vacuum environment

Abstract

The invention relates to a calibration measurement device for steady-state thrust of a 4-25N attitude control engine in a thermal vacuum environment. The calibration measurement device comprises a base transfer frame, shock absorbing blocks, a fixed frame, a balance transfer plate, a single-component balance measurement device, a propellant pipeline, propellant pipeline fixing devices and an in-situ calibration device, wherein the shock absorbing blocks are uniformly mounted between the base transfer frame and the fixed frame; the propellant pipeline fixing devices are fixedly mounted on the periphery of the fixed frame; the propellant pipeline is mounted through the propellant pipeline fixing devices, one end of the propellant pipeline is communicated with an external propellant supply system, and the other end of the propellant pipeline is communicated with a propellant inlet of a to-be-measured attitude control engine; the single-component balance measurement device is mounted at one end of the fixed frame through the balance transfer plate, and the in-situ calibration device is mounted at the other end of the fixed frame. The calibration measurement device meets the requirements of the 4-25N attitude control engine for low thrust calibration measurement and solves the problems that high uncertainty is caused by pipeline constraint, high temperature and vibration in a measurement process, calibration before test run is not proper, the calibration precision is poor and the like.

Description

technical field [0001] The invention relates to aerospace liquid engine tests, in particular to a 4-25N attitude control engine vacuum thermal environment steady-state thrust calibration measuring device. Background technique [0002] As one of the most mature propulsion systems at present, the liquid rocket engine has many unique advantages. It is still the main propulsion system that various countries strive to develop, and has achieved many achievements in both high thrust and small thrust. At present, the United States is still in most propulsion systems. Russia is leading the world in terms of systems, while Russia continues to maintain its leading position in liquid propulsion, especially high-thrust liquid rockets. The European Union and Japan are catching up with the technological level of the United States. Compete. [0003] A rocket engine is part of a rocket's propulsion system. The propulsion system is composed of engine (solid, hydraulic, stamping, attitude co...

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Problems solved by technology

[0023] In order to realize the small thrust calibration measurement requirements of 4-25N attitude control engine, solve the problems caused by pipeline constraints, high temperature and vibration in the measurement process, and it is not suitable for calibration before test run, and the calibration accuracy is poor. -25N attitude control engine vacuum thermal environment steady-state thrust calibration measurement device

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