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Attitude control engine vector thrust measurement system and measurement method

A technology of vector thrust and measurement system, which is used in engine testing, force/torque/work measuring instruments, measuring devices, etc., and can solve problems such as inability to measure side loads and moments.

Active Publication Date: 2016-03-23
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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Problems solved by technology

[0003] The engine ground thrust measurement device used at this stage can only measure the axial main thrust of the engine, but cannot measure the side load and moment perpendicular to the central axis

Method used

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  • Attitude control engine vector thrust measurement system and measurement method
  • Attitude control engine vector thrust measurement system and measurement method
  • Attitude control engine vector thrust measurement system and measurement method

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Experimental program
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Embodiment Construction

[0064] The present invention will be further described below in conjunction with accompanying drawing:

[0065] Measured vector force sensor:

[0066] The material of the vector force sensor is high-strength maraging steel F141, which is an ultra-high-strength iron-based alloy containing 18% nickel. Compared with other materials, its outstanding features are: while having high strength , still has good toughness and elongation performance; good corrosion resistance; easy to machine and forge in solid solution state; good welding performance; heat treatment distortion is small; low linear expansion coefficient.

[0067] The vector force sensor is processed in one piece, the structure is as follows image 3 shown. The sensor is composed of 7 double-arc-shaped two-way elastic hinges and 7 strain beams. The advantages of the double-arc-shaped two-way elastic hinges are strong anti-interference ability, high sensitivity, small angular displacement, large axial stiffness, and no g...

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Abstract

The invention relates to an attitude control engine vector thrust measurement system and measurement method. The attitude control engine vector thrust measurement system includes 5-pin connectors, a 61-pin connector, a measurement module and an in-situ thrust calculation module; a vector force sensor outputs seven paths of voltage signals; the voltage signals enter the 61-pin connector through the seven 5-pin connectors; the output end of the 61-pin connector is connected with the measurement module; and the measurement module comprises a power source, a voltage signal acquisition module, an excitation back measurement module and a change-over interface, wherein the power source is used for providing excitation for the vector force sensor through the 5-pin connectors and the 61-pin connector, the voltage signal acquisition module is used for acquiring voltage signals of the vector force sensor through the 5-pin connectors and the 61-pin connector, the excitation back measurement module is used for measuring excitation signals fed back by the vector force sensor, and the change-over interface is connected with the in-situ thrust calculation module. According to the attitude control engine vector thrust measurement system and measurement method of the invention, in order to satisfy attitude control engine vector thrust measurement requirements, key technologies such as vector thrust measurement parameter mutual disturbance decoupling are adopted, and therefore, the measurement of various kinds of forces can be realized.

Description

technical field [0001] The invention relates to an aerospace engine test, in particular to a test method for vector thrust measurement, data transmission and processing during the working process of an attitude control engine. Background technique [0002] During the working process of the rocket engine, due to the asymmetric flow in the internal flow field of the combustion chamber and the vector nozzle, a small side force is bound to be generated relative to the main thrust vector. Due to the higher and higher requirements for the control precision of the aircraft, the influence of this small lateral force on the control of the aircraft needs to be paid enough attention. [0003] The engine ground thrust measurement device used at this stage can only measure the axial main thrust of the engine, and cannot measure the side load and moment perpendicular to the central axis. Therefore, to evaluate the working effect of the engine, it is necessary to develop a vector thrust m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01M15/00
CPCG01L5/00G01M15/00
Inventor 李广会刘丽宁冷海峰刘阳吴飞飞汪林向红艳
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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