【摘要】 运载火箭实现重复使用是未来运载火箭的发展趋势之一。本文首先简单地介绍了当前国外重复使用技术的发展状况，然后根据我国的国情提出了一种两级入轨可完全重复使用的方案，接着对该方案的返回轨道特性进行了研究，通过分析仿真计算结果，论证了火箭全部回收的可行性，最后提出了欲进一步深入研究此方案所需做的关键技术研究工作。更多还原

【Abstract】 Reusable launch vehicle is one of the development trends of future launch vehicle.Firstly,the development status of foreign reusable launch vehicle technology is briefly introduced.Then,a concept of two stage to orbit and fully reusable launch vehicle is put forward.The return trajectory characteristics of the concept is analysed and the reasibility of full rocket recoverability is validated by analysing the simulation results.Lastly ,the key technology items which should be studied are pointed out.更多还原