The results show that the threshold of air breakdown decreases when laser wavelength increases,while the wavelength has no evident effect on the momentum coupling coef.

• 实验结果表明,在大气呼吸模式激光推进中,空气的击穿阈值随激光波长的增大而降低,激光波长对飞行器获得的冲量耦合系数没有明显的影响。