激光推进原理与技术

FUNDAMENTAL THEORY AND TECHNOLOGY OF LASER PROPULSION

关键词:  激光  推进  高温等离子体

Key words:  Laser  Propulsion  High temperature plasma

摘要:

激光推进是激光技术与航空航天技术同时得到较大发展后，于７０年代初提出来的一种全新的推进方式。激光推进可以同时克服化学推进中自然燃烧极限的限制和核能推进中推力／质量比率低的缺点，可以获得约２００００Ｎ·ｓ／ｋｇ的比推力，推力／质量比率为化学推进的典型值。文中报道了激光推进的基本原理与技术、发展概况、主要问题及应用前景等。

Abstract:

aser propulsion is a new propulsion technology raised in the early 70’s when both laser technology and astronautics and aeronautics technology had been well developed. Both the limitation of combustion temperature in chemical propulsion and the disadvantage of lower ratio of thrust to mass in nuclear propulsion can be overcome by using laser propulsion.Its specific impulse can reach 20000 N. s/kg,and,the ratio of thrust to mass is typical as that of the chemical propulsion. Introduction.fundamental theory and technology. applications and existing problems of laser propulsion were reported in the paper.