Piezoelectric test device for high thrust solid rocket motor

Abstract

The invention belongs to the technical field of sensing and measurement and control and provides a piezoelectric test device for a high thrust solid rocket motor. The requirements of six-dimensional force on-line calibration of the solid rocket motor are satisfied, a corresponding verification structure is designed for a calibration result, and the reliability of the device is improved. The deviceis formed by a support frame, trundles, a supporting circular table, lateral loading devices, an adaption frame, a dynamometer, a standard force sensor, a connection cylinder, and a hydraulic power system. The device has the advantages of a large measuring range, good structure craftsmanship and high precision, the tests of space force and moment can be carried out at the same time, and thrust vector characteristics of the motor can be more fully and accurately tested.

Description

technical field [0001] The invention belongs to the technical field of sensing and measurement and control, and relates to a piezoelectric testing device for a large-thrust solid rocket motor, which is of great significance in the thrust vector testing of engines in the fields of aerospace, national defense and military industry, etc., and is especially applied to the thrust vector of solid rocket motors test. Background technique [0002] With the rapid development of the modern aerospace industry, the requirements for the reliability of the propulsion system are getting higher and higher. The precise control of the engine thrust is of great significance for controlling the attitude of the aircraft and improving the accuracy of the target. A rocket engine that relies on the chemical energy of a solid propellant as an energy source is called a solid rocket engine, and has been widely used as a power plant for various aircraft such as rockets, missiles, spacecraft, and space ...

AI Technical Summary

Problems solved by technology

[0003] The devices used to test the thrust vector of solid rocket motors at home and abroad can be divided into two types: multi-component force balance and multi-component thrust vector test bench. Among them, the six-component thrust vector test bench is the most used test device at present, but there are still such as engine The installation and debugging are complicated and time-consuming, and the natural frequency of the test bench is low, etc.

[0004] The six-degree-of-freedom solid rocket motor test bench designed by Florida Institute of Technology is a relatively advanced thrust vector test device currently available for inspection. is 44482N), but this force value is still far from the force value measured for the actual needs of solid rocket motors

Moreover, this test device cannot verify the test results after the test is over, and there are still problems with the reliability of the test results.

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