论文部分内容阅读
由于向空间发射有效载荷的需求日益增加,最近西欧就重复使用的空间运输系统作为“阿里安娜”运载火箭的后继型号问题重新进行了讨论。本文所介绍的空间运输系统方案是斯图加特大学理论研究的成果,是由一种1(1/2)级以氢作推进剂的冲压发动机和火箭组合发动机(液氢和液氧为推进剂)推进的,可重复使用、垂直起落的弹道式空间运输系统。文中将本方案的结果与欧洲近期设计的其它方案作了比较,得出的基本参数为:起飞质量为155Mg时发射到低轨道的有效载荷为15.4Mg,有效载荷与起飞重量比约为10％,比二级运载火箭方案节省56％的推进剂和44％的干质量(结构加发动机)。
With the increasing demand for launching payloads into space, the recent issue of space transportation systems for reuse in Western Europe has been re-discussed as a successor model to the “Ariane” launch vehicle. The space transportation system presented in this paper is the result of a theoretical study by the University of Stuttgart propelled by a 1/2-stage ramjet engine with rocket propellant hydrogen and liquid oxygen as a propellant , Reusable, vertical landing trajectory space transportation system. In this paper, the results of this scheme are compared with those of other recent designs in Europe. The basic parameters obtained are as follows: the payload launched to the low orbit at 155Mg takeoff is 15.4Mg, the effective load-take-off weight ratio is about 10% , 56% less propellant and 44% dry mass (structure plus engine) than the second stage launch vehicle program.