Impulse Scale Apparatus for Measuring Laser Ablation Micro-Impulse

Abstract

The invention provides an impulse balance device for measuring laser ablation micro-impulse, which comprises an impulse balance part, an electromagnetic damping part and a displacement measuring part. The impulse scale part includes a beam, a rotating bracket, a pivot, a pivot bracket, a fixed bracket, a counterweight and a damping plate; the middle part of the beam is fixed with a rotating bracket, and one end of the pivot is vertically connected to the rotating bracket, and the other end is vertically connected to the pivot frame ; Both ends of the beam are respectively fixed with counterweights and damping plates; the pivot frame is installed on the upper end of the fixed bracket, and the bottom end of the fixed bracket can be connected with the test bench or other adjustment mechanisms. The electromagnetic damping part includes a power supply, a bracket and an electromagnet; the electromagnet is fixed by the bracket; the displacement measurement part includes a displacement sensor, a sensor bracket, a controller and a data processing terminal.

Description

technical field [0001] The invention belongs to the technical field of space propulsion, and relates to a micro-impulse measuring device for laser ablation micro-propulsion. Background technique [0002] Laser micro-propulsion uses laser as the power to ablate the working medium to generate impulse, and realize the attitude and orbit control of the spacecraft. The impulse measurement of laser micro-propulsion is crucial to the study of laser micro-propulsion technology. The impulse range generated by laser micro-propulsion is usually in the range of 10 -7 ~10 -4 Between the N·s level, the impulse measurement requires high precision, fast response, and large range, and the measuring device needs to be specially designed to meet the requirements. [0003] At present, among the micro-impulse test methods publicly reported at home and abroad, the most concerned is the torsion measurement method. The torsion pendulum was originally a device for measuring tiny forces. As early...

AI Technical Summary

Problems solved by technology

[0008] The present invention improves the existing micro-impulse measuring torsion device, based on the torsion principle, realizes the measurement of the micro-impulse by measuring the maximum swing displacement of the torsion, and solves the problem of small measurement range, long vacuum environment preparation time, and problems of the existing impulse balance. The problem of vibration interference caused by impact force loading

Images