太阳帆推进

太阳帆依靠反射太阳光光子产生推力，在飞行任务的整个过程推力连续作用于飞行器上而不需要任何推进剂。太阳帆可广泛应用于低成本大速度增量的太阳系飞行任务，具有其它推进系统无法替代的优点。简要介绍了太阳帆推进的机理及研究现状，给出了太阳帆飞行器的主要性能参数及需要解决的主要技术关键。

Solar sail

Solar sails reflect photons streaming from the sun and convert some of the energy into thrust. This thrust, though small, is continuous and acts for the life of the mission without the need for any propellant. Solar sails provide a wide range of opportunities for low-cost large ?V-requirements interplanetary missions with many of which may be difficult or even impossible to be carried out with other types of spacecraft propulsion systems. Mechanics and state-of-the-art of solar sail are introduced briefly. The performance parameters and key technology are presented.