Acronym for Supersonic Transport, referring to aircraft that can fly faster than the speed of sound. Most famously associated with the Concorde.
Acronym formed in the 1960s during development of civilian supersonic aircraft. Combines 'supersonic' (above the speed of sound) with 'transport' (passenger or cargo carrying), representing the aviation industry's push toward faster commercial flight.
SST represents one of humanity's boldest transportation dreams that didn't quite work out - these aircraft could cross the Atlantic in half the time but were too expensive and noisy for widespread adoption! The Concorde was essentially a beautiful, impractical time machine that only the wealthy could afford.
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