Practical/ aerospace propulsionnuclear powerrocket enginessolar powerspace vehicle power plants/ nuclear transport-power modulessolar transport-power modulesspacecraftnuclear power systemssolar power systemsthermal rocket motThe results of a comparative analysis of the effectiveness of transport-power modules of...
Recent developments in miniaturization, in-space propulsion, onboard processing and control, and communication systems have completely transformed the space sector by allowing smallsats to carry out complex tasks that were previously achievable only with larger spacecraft....
Orbit-to-orbit spacecraft never land on any planet, moon, or asteroid. Therefore they are free to use efficient propulsion systems with a thrust-to-weight ratio below 1.0, such as ion drives or VASIMR. They require no landing gear or parachutes. If there ain't no landing gear, it is ...
Spaceflight, flight beyond Earth’s atmosphere. This article deals with the basic concepts associated with the launch and return of unmanned and manned spacecraft and their travel, navigation, and rendezvous and docking in space. For the development of s
Rocket Scientist:Rocket scientists design and develop the propulsion systems used in rockets and spacecraft. They work on improving efficiency and safety in launching and navigating through space. Space Law and Policy Expert:With the increasing commercialization of space, there is a growing need for ...
Mars-orbiting spacecraft have detected water vapor in the Martian atmosphere, particularly in white clouds and fog. Temperature measurements made by the Viking Orbiter missions in the 1970s revealed that the north pole residual cap, which remains year-round, even at the height of Martian summer,...
field of deep space navigationDrawing on fundamental principles and practices developed during decades of deep space exploration at the California Institute of Technology's Jet Propulsion Laboratory (JPL), this book documents the formation of program Regres of JPL's Orbit Determination Program (ODP)....
VOYAGER 2 SPACECRAFTDATA TRANSMISSIONSPACECRAFT COMMUNICATIONSTATISTICAL ANALYSISVoyager radio navigation made use of a differenced rage data type for both Saturn encounters because of the low declination singularity of Doppler data. Nearly simultaneous two-way range from two-station baselines was explicitly...
Launch vehicle, a rocket-powered vehicle used to transport a spacecraft beyond Earth’s atmosphere, either into orbit around Earth or to some other destination in outer space. Practical launch vehicles have been used to send crewed spacecraft, uncrewed s
WorkOfFiction 写入者关系实体类型 对于使用同样支持关系的 版本1 实体类型系统的语言,关系结果包含与实体结果中返回的实体类型不同的实体类型。 要返回实体结果中的关系实体类型,可以在model选项中为entities特征指定下列某个公共实体模型,以覆盖缺省实体检测模型。 模型标识描述 ar-news 阿拉伯语新闻 en-news 英语新闻...