Overall flange sleeve test rack used for rolling-control engine ground ignition test

Abstract

The present invention provides an overall flange sleeve test rack used for a rolling-control engine ground ignition test. The test rack comprises a fixed rack, a force bearing pier, a force measurement assembly and a flange sleeve movable rack, and also comprises a shaft support, a connecting rod, a linear motion bearing and a simple, easy and rapid positioning clamp. According to the present invention, the linear motion bearing is installed in the movable rack, a bearing ball of the linear motion bearing is in point contact with the connecting rod, so that the friction resistance is small, and the measurement sensitivity is high. By applying to the test rack, the thrust measurement precision of an engine can be improved, and the problems that an aslant placed swing nozzle rolling-controlengine is difficult to install and debug, and the thrust cannot be transmitted accurately are solved. In addition, in order to prevent a nozzle from rotating during the test process, the simple, easyand rapid positioning clamp is designed, and in order to eliminate a gap between a test rack thrust transmission assembly and a force bearing surface, and reduce the impact generated at the ignition moment of the engine and the influence of the oscillation on the thrust measurement during the test process, a pretightening force loading mechanism is designed.

Description

technical field [0001] The invention relates to the technical field of static test thrust measurement of solid rocket motors, in particular to an integral flange sleeve test frame used for ground ignition tests of rolling control engines. Background technique [0002] Engine thrust measurement plays an important role in the development of solid rocket motors. A certain type of rolling control engine adopts an oblique swinging nozzle. The nozzle is not on the axis of the combustion chamber, and the axis of the nozzle and the axis of the combustion chamber form a certain angle, resulting in the presence of vertical and horizontal components of thrust. The test mainly measures the horizontal direction thrust. [0003] Due to the presence of vertical force components, when the traditional center frame test scheme is adopted, the degree of compression of the test frame rollers will have a greater impact on the resistance of the test frame, and the inconsistency of the installati...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention proposes an integral flange sleeve test frame for the ground ignition test of the rolling control engine. The rod is in point contact, with small frictional resistance and high measurement sensitivity. It can improve the thrust measurement accuracy of the engine when applied to the test stand, and solve the problem of difficult installation and debugging of the inclined swing nozzle roll control engine and the inaccurate transmission of thrust.

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