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本文主要介绍了两个自旋固体上面级系统,即有效载荷推进舱A和D型的当前结构。有效载荷推进舱D型(PAM-D)能从航天飞机飞行轨道上把重达2750磅的卫星送入倾角为27度的地球同步转移轨道。现已签订了合同,用它发射通讯卫星系统。它也适合用作为德尔它一次使用运载火箭的第三级,来发射轨道卫星。德尔它/PAM-D型系统已完成了它的鉴定计划,并在1980年11月作了第一次发射,预计在1982年10月从航天飞机上进行首次发射。更大的有效载荷推进舱A型(PAM-A),能把4400磅重的卫星送入相同的地球同步转移轨道。它是为执行国际通讯卫星V型的发射任务而进行设计的。预计它在1984年用航天飞机作第一次发射。作者还在本文中介绍这两个有效载荷推进舱(PAM)的发射准备,轨道上的工作、飞行性能以及获取方法。
This article describes two spin-on-solids top-level systems, namely payload payload propulsion Class A and D current structures. The payload Propulsion Module D (PAM-D) can send 2,750 lbs of satellites from space shuttle flight orbit to geosynchronous orbit with an inclination of 27 degrees. It has now signed a contract to use it to launch a communications satellite system. It is also suitable for launching orbiting satellites as the third stage of its use of launch vehicles. The Deltas / PAM-D system has completed its program of identification and made its first launch in November 1980 and is expected to make its first launch from the space shuttle in October 1982. Larger payload Pacemaker Type A (PAM-A), capable of delivering 4,400 pounds of satellites to the same geosynchronous orbit. It is designed to carry out the launch of the International Telecommunications Satellite V-type. It is expected to launch its first space shuttle in 1984. The authors also describe in this paper the launch preparation, orbital maneuvers, flight performance, and acquisition methods for these two payload pods (PAM).