Laser thruster micro-impulse test device

Abstract

The invention relates to a micro-impulse testing device for a laser thruster. It includes a ㄈ-shaped frame composed of a base plate, a vertical bar and a cross bar. A vertical swing wire is suspended between the base plate and the cross bar of the ㄈ-shaped frame. A beam perpendicular to the swing wire is fixed in the middle of the swing wire. The other end is a counterweight, and the crossbeam at the intersection with the pendulum wire is equipped with a reflector, the laser that irradiates the mirror, and the scale that receives the detection laser beam, and the upper and lower ends of the pendulum wire are fixed by the clamping mechanism. The calculation model of the impact force impulse of the laser thruster micro-impulse test device is given. The advantage is that the measuring range is wide, the testing precision is high, the device is easy to implement, and the parameter calibration method is simple and easy.

Description

Technical field of laser thruster micro-impulse test device The invention belongs to the technical field of space propulsion, in particular to the field of micro-impulse testing technology of a kind of micro-thruster area. Background technique The impulse range of laser plasma micro-thruster is generally at 10 -6 ~10 -4 Between N·s magnitude. micro thruster Micro-impulse measurement is one of the key technologies in the study of micro-propulsion technology. At present, the single-pulse impulse test publicly reported at home and abroad Methods include laser interferometry and torsional pendulum test. Laser interferometry is simple and easy to measure small thrust and single pulse impulse The ideal method, but the laser interferometry uses a laser interferometer, because the laser interferometer is expensive, it is rarely used. therefore The torsional pendulum micro-impulse test method has been more favored. [0003] In 1774, Coulomb invented the Coulomb to...

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