A Flange Sleeve Test Rig for Ground Ignition Test of Roll Control Engine

Abstract

The present invention proposes an integral flange sleeve test frame for the ground ignition test of the rolling control motor, including a fixed frame, a load-bearing pier, a force-measuring assembly, a flange sleeve moving frame; and a shaft support, a connecting rod, Linear motion bearings and easy quick positioning fixtures. The invention adopts the linear motion bearing installed in the moving frame, the bearing ball of the linear motion bearing is in point contact with the connecting rod, the frictional resistance is small, and the measurement sensitivity is high, and the thrust measurement accuracy of the engine can be improved when applied to the test frame, and the oblique swing can be solved The installation and debugging of the nozzle roll control engine is difficult, and the thrust cannot be accurately transmitted. In addition, in order to prevent the nozzle from rotating during the test, a simple and fast positioning fixture is designed, and in order to eliminate the gap between the thrust transmission component of the test stand and the bearing surface, reduce the impact of the engine ignition moment and the impact of the vibration on the thrust measurement during the test. influence, design the preload loading mechanism.

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.

Images