2015年2月11日13:40,欧洲航天局(ESA)研制的无人太空飞机“过渡型试验飞行器”(IXV)由“织女星”(Vega)运载火箭发射升空,在约348km高度与火箭分离,继续爬升到41 3km高度后弹道式再入返回,亚轨道飞行共持续100min,最后于15:19在降落伞辅助下溅落在太平洋上,标志着“过渡型试验飞行器”任务圆满完成。“过渡型试验飞行器”是ESA用于飞行试验航天器再入技术的试验台,采用无翼升力体设计,带有热防护系统,推力器和2个襟翼在再入过程中提供控制。“过渡型试验飞行器”此次亚轨道试飞任务的主要目的是收集各种系统和部组 Unmanned spacecraft “Transitional Test Vehicle” (IXV) developed by the European Space Agency (ESA) at 13:40 on February 11, 2015 was launched by a Vega carrier rocket and launched at about 348km altitude and rocket separation, continue to climb to 41 3km altitude after the ballistic reentry and return, sub-orbital flight lasted 100min, and finally at 15:19 with the help of a parachute splashed on the Pacific Ocean, marking the “transitional test aircraft” The task is completed successfully. “Transitional Test Vehicle ” is a test rig used by ESA for spacecraft reentry in flight tests, with wingless body design, thermal protection, thruster and 2 flaps to provide control during reentry . “Transitional test aircraft ” The main objective of the sub-orbital test mission is to collect various systems and ministries