https://www.af.mil/News/Photos/igphoto/2002488165/
The X-37B Orbital Test Vehicle, or OTV, is an experimental test program to demonstrate technologies for a reliable, reusable, unmanned space test platform for...
orbital test vehiclex
https://www.space.com/25-37b-space-plane-orbital-test-vehicle/3.html
The X-37B space plane designed by NASA has been revived by the United States Air Force to test reusable space capabilities. The USAF is considering using the...
orbital test vehiclespace planephotosx