【摘要】 通过冲击摆实验,测量了激光推力器在不同气体工质(氩气,氦气)、不同工作压力条件下的冲量耦合系数,比较了不同气体对激光推力器冲量耦合系数的影响。实验结果表明:冲量耦合系数随着环境压力的下降而下降,并且下降趋势越来越快;在氩气中测量的冲量耦合系数比氦气的高;实验产生误差的主要因素是摆角的测量误差。更多还原

【Abstract】 With the experiments of pendulum, the impulse coupling coefficient of laser thruster is measured of different material under different ambient pressure, the effect of different gas is compared. The result shows that the impulse coupling coefficient decreases when the ambient pressure decreases, and the decreasing trend is quicker, when the ambient gas is Ar, the impulse coupling coefficient is bigger than He. The measurement error of deflexion angle is the main factor of the error.更多还原