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Liquid-propellant rocket engine test thrust calibration system and calibration method

A liquid rocket and calibration system technology, which is applied in the direction of engine testing, machine/structural component testing, measuring devices, etc., can solve problems such as interference mixed with unreliable data, difficult adjustment of the force loading system, and poor stability, etc., to improve Measurement accuracy, high degree of automation, and good stability

Inactive Publication Date: 2015-10-28
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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Problems solved by technology

[0003] In order to solve the technical problems existing in the existing calibration system such as difficult adjustment of the force value loading system, poor stability, low efficiency, and possible interference mixed into unreliable data, the present invention provides a liquid rocket engine test thrust calibration system and calibration method

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  • Liquid-propellant rocket engine test thrust calibration system and calibration method
  • Liquid-propellant rocket engine test thrust calibration system and calibration method
  • Liquid-propellant rocket engine test thrust calibration system and calibration method

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] 1. System composition

[0047] Such as figure 1 As shown, the thrust automatic calibration system of the present invention is mainly composed of a hydraulic source system, a hydraulic actuator - a jet pipe electro-hydraulic servo valve, a measurement and control system, and a force transmission system for performing calibration. The hydraulic source system is mainly composed of a fuel tank 1 and a fine filter 16 , oil return filter 17, air cooler 18, oil pump 2, overflow valve 19, one-way valve 15, two-position two-way valve 20, pressure relay 21, accumulator 22, pressure gauge, etc.; the measurement and control system is mainly composed of Computer 10, multipurpose digital meter 12, measurement and control circuit, linear power supply 23, etc.;

[0048]The hydraulic source system includes an oil pump, an oil tank, and an electro-hydraulic servo valve. The e...

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Abstract

The invention relates to a liquid-propellant rocket engine test thrust calibration system and a calibration method. The electro-hydraulic servo control technology is employed as a core, a thrust parallel connection transmission technology is employed, Ends of two diverters are connected with a first oil outlet A and a second oil outlet B of an electro-hydraulic servo value correspondingly. A plurality of ports at the other end of one diverter are connected with oil input cavities of a plurality of double-acting oil cylinders correspondingly and respectively. A plurality of ports at the other end of the other diverter are connected with oil return cavities of the plurality of double-acting oil cylinders correspondingly and respectively. The plurality of double-acting oil cylinders are distributed under a movable rack. A fixed rack and the movable rack are connected through a spring steel plate. A plurality of calibrated sensors are located between the fixed rack and the movable rack and are pressed against the lower bottom surface of the fixed rack. A plurality of standard force sensors are located among the movable rack and the oil cylinders and are pressed against a movable rack lower bottom surface of a force transmission rack. Results show that the calibration system is advantaged by high calibration precision, good stability and short consuming time, and raises the large-thrust liquid-propellant rocket engine test thrust calibration technological level greatly.

Description

technical field [0001] The invention belongs to the technical field of liquid rocket engine tests, and relates to a calibration system and a calibration method for liquid rocket engine test thrust. Background technique [0002] Accurately measuring the thrust of the liquid rocket engine during the hot test run can shorten the development process of the engine. The thrust calibration system is set up to eliminate the system error of the force transmission system of the engine test stand. It is an important link in the test run of the liquid rocket engine. Through Thrust calibration is to fit the working straight line between the output value of the measuring force sensor and the actual force value. When the engine is tested, the output value of the measuring force sensor is used to calculate the engine thrust according to the above working straight line. Most of the previous thrust calibration systems used mechanical loading of weights, manual calibration, and manual synchron...

Claims

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Application Information

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IPC IPC(8): G01M15/00
Inventor 单琳赵政社徐造林王晓华彭飞陈海峰白文义耿直朱成亮翟文化杜彬候健赵建军李谦鱼凡超朱小江
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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