from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sudden compressor stall that can occur in the jet engines of supersonic aircraft.
Sorry, no etymologies found.
Mach 3.44 is given as the speed at which the engine enters a state of "unstart".
And in our lingo, it's known as an 'unstart' or an AD-an aerodynamic disturbance. "
If I wer an unstart Senator and ConLaw Professor, I would insert an amendment re-establishing the inability of FISA-warrants to be used as evidence against a suspect.
Pilots and RSOs occasionally experienced their pressure suit helmets banging on their cockpit canopies until the initial unstart motions subsided.
Lockheed engineers developed control software for the engine inlets that would recapture the lost shock wave and re-light the engine before the pilot was even aware an unstart had occurred.
Due to the tremendous thrust of the remaining engine pushing the aircraft asymmetrically along with the sudden deceleration caused by losing 50\% of available power, an unstart would cause the aircraft to yaw violently to one side.
One of the standard counters to an inlet unstart was for the pilot to reach out and unstart both inlets; this drove both spikes out, stopped the yawing conditions and allowed the pilot to restart each inlet.