test article
vehicle or equipment used to test portions of a spaceflight regime
Black Knight
family of British research ballistic missiles
OK-KS
electrical test article in the Buran programme
Enterprise
American Space Shuttle test vehicle
Optical Telescope Element Pathfinder
test article for the James Webb Space Telescope
OK-MT
engineering mockup in the Buran programme
boilerplate
spacecraft; nonfunctional craft or payload
Pathfinder
Space Shuttle test article
OK-M
airframe and shake test article in the Buran programme