NASA

The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.

第一个放置在对地静止卫星是1963年美航空暨太空总署发射同步传输卫星.

Project Description: Gulfstream Aerospace and NASA's Dryden Flight Research Center tested the structural integrity of a telescopic 'Quiet Spike' sonic boom mitigator on a NASA F-15B testbed aircraft.

湾流航空和宇航局德莱顿飞行研究中心测试结构完整性伸缩'安静斯派克'爆音缓和对美航天局F - 15B条试验飞机。