A Simulation Method for Deformation Moment of Pump Swing Engine Under Inflated State

Abstract

The invention discloses a method for simulating the deformation moment of the pump back swing engine under the inflated state. Two springs symmetrically arranged on both sides of the swing shaft of the engine are used to simulate the bellows; each spring satisfies: the rigidity height is equal to the height of the bellows; The diameter of the edge size is less than half of the bellows width; when the stroke is greater than the engine swing, the moment generated acts on the spring to deform and simulate the deformation moment of the bellows; the metal spring developed by the invention is directly installed on the contact surface between the engine and the frame, which is similar to that of the real engine. The force point of the deformation moment and the force arm are exactly the same. Under the accurate force analysis and stiffness calculation, the state of one side of the spring under tension and one side of the spring is basically equivalent to that of the bellows when the engine is cut and pendulum, so that the servo system The static and dynamic characteristics are more accurate and reliable. There is no need for any other supporting equipment, which greatly reduces the development cost. No operation is required during use, and no waiting time for multiple trials is required, which greatly improves convenience.

Description

Technical field [0001] The present invention relates to a simulation method of deformation torque in an inflation state of the pump post-pumping, belonging to the semi-real material simulation of the carrier rocket control system. Background technique [0002] When the carrier is flying, the engine generates huge thrust, which mainly acts on the rotating shaft and bellows, bringing the slight shape of the rocking device. In the ground test, in order to simulate the inflation state of the flight, a structural simulation of the mocking device minority change is developed, and the static, dynamic characteristic test and semi-real simulation test of the servo system are closer to the flight state. [0003] The current semi-real test system generally uses laterally loaded manner to simulate the overload moment generated during the engine eccentricity and flight, and the deformation torque generated by the rocking device is superposed on the overload moment. The technique has the follo...

AI Technical Summary

Problems solved by technology

This technology has the following defects: (1) the error is very large at high frequency; (2) the characteristic simulation distortion of the load engine itself is relatively large

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