Space Engineering University

Aerospace Engineering University of the People's Liberation Army (pla) Strategic Support Force

Jifei Ye

Yanji Hong

Xing Jin

Sibo Wang

Haichao Cui

Nanlei Li

Xiaohui Feng

Gaoping Feng

Baoyu Xing

The present disclosure belongs to the technical field of space satellite propulsion, and particularly relates to a digital filter based method for measuring thrust response time of a satellite-borne micro-thruster. The method for measuring thrust response time in the present disclosure includes the following steps: S: zeroing non-zero initial conditions of a torsional pendulum thrust measurement system to obtain an oscillating differential equation for a thrust measurement system after variable substitution; S: connecting the digital filter in series behind the thrust measurement system after variable substitution to obtain an equivalent-sensitivity high-frequency thrust measurement system; S: determining a system response of the equivalent-sensitivity high-frequency thrust measurement system; S: determining and reading thrust response time of the satellite-borne micro-thruster from the system response; and S: computing thrust to be measured by means of the system response inversely, and further confirming the thrust response time.

Digital filter based method for measuring thrust response time of satellite-borne micro-thruster

Provided is a preparation method for a double-layer working medium target tape with a plasma-enhanced interfacial bonding force for a micro laser thruster. Aiming at the problem that in an existing micro laser thruster, when a working medium is ablated by a laser beam, due to a weak interlayer interfacial bonding force between a transparent film substrate and the coating working medium, sputtering or bulging occurs, which remarkably reduces propulsive performance, a method for treating a surface of a transparent film substrate with a low-temperature plasma is used to increase surface energy of a film and an adhesive force of a working medium layer on a surface of the film, thereby enhancing the interlayer interfacial bonding force. According to the method in the present disclosure, the transparent film substrate is treated with the low-temperature plasma.

Preparation method for double-layer working medium target tape with plasma-enhanced interfacial bonding force for micro laser thruster

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Beijing, China

Jifei Ye