Dynamic calibration system for rocket engine thrust measuring device

Abstract

The invention discloses a dynamic calibration system for a rocket engine thrust measuring device. The system comprises a fixed frame, a working force sensor, a magnet, a coil, a wire 1, a power supply, a wire 2, a high speed relay switch, a wire 3, a standard force sensor, a calibration bracket, a measuring cable 1, a control cable, a computer and a measuring cable 2. The high-speed relay switch is normally closed, mutually repulsive magnetic fields are formed between the coil and the magnet after being electrified, and the forces received by the working force sensor and the standard force sensor are equal in magnitude and opposite in direction. After the computer issues a disconnect command, the high-speed relay switch is driven to disconnect by the control cable, the electromagnetic field in the coil disappears, the interaction force between the coil and the magnet disappears, and the forces on the working force sensor and the standard force sensor disappear at the same time, therebyrealizing rapid unloading of the standard force and producing a negative step dynamic force. The dynamic calibration is achieved by measuring the negative step signal of the working force sensor andcomparing the signal with the value of the standard force sensor.

Description

technical field [0001] The invention relates to a calibration system for a thrust measuring device of a rocket engine, in particular to a dynamic calibration system for a thrust measuring device of a rocket engine, which is suitable for dynamic calibration of the thrust measuring device of a rocket engine. Background technique [0002] Pre-research, design, production, and test are the four basic links in the development of any new type of rocket engine. Among them, the test work is extremely important, and some engine experts even think that the rocket engine is not the result of research, but the crystallization of experiments. This is mainly because almost all problems encountered in the process of developing the engine are solved by experiments. [0003] The working process of the rocket engine is relatively complicated. In theoretical research, it is impossible to describe this process clearly by analysis and calculation alone, and it is also impossible to strictly det...

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Problems solved by technology

[0003] The working process of the rocket engine is relatively complicated. In theoretical research, it is impossible to describe this process clearly by analyzing and calculating alone, and it is also impossible to strictly determine the quantitative relationship between the various performance parameters of the engine.

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