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What does S stand for?

S stands for Spaceplane (US military aerospace vehicle)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Military and Government

See other definitions of S

Samples in periodicals archive:

12) NASA had not done well in building such spacecraft, whether the reusable X-33 or various proposals for a small shuttle or spaceplane to reach the International Space Station or Low Earth Orbit.
The first composition is a concise survey of the manned space program pursued by the Service from 1959 to 1963, highlighting the interactions with NASA's Mercury and Gemini programs as well as the Dyna-Soar spaceplane.