unstart
Noun
Meaning
unstart (plural unstarts)
A sudden compressor stall that can occur in the jet engines of supersonic aircraft.
Examples
During an 'unstart' the efficient shock system would be replaced by a very inefficient single shock beyond the inlet and an intake pressure recovery of about 0.3 and a correspondingly low pressure ratio.
One response to a single unstart was unstarting both inlets to prevent yawing, then restarting them both.
Landis and Jenkins 2005, p. 97. Lockheed later installed an electronic control to detect unstart conditions and perform this reset action without pilot intervention.