Wiktionary
n. (alternative case form of Brennschluss English)
Wikipedia
Brennschluss (a loanword, from the German Brennschluß) is either the cessation of fuel burning in a rocket or the time that the burning ceases: the cessation may result from the consumption of the propellants, from deliberate shutoff, or from some other cause. After Brennschluss, the rocket is subject only to external forces, notably that due to gravity.
In the 1950s, former German rocket engineer Willy Ley, who had emigrated before the Anschluss and hence never worked on the V-2 rocket, tried to get this term used by the English-speaking aerospace industry. The British used the term "all-burnt" while the Americans used "burn-out."
Usage examples of "brennschluss".
The pilot has his hands full in this maneuver, leaving it up to the co-pilot to guard the auto-pilot, to be ready to fire manually if need he, and to watch for brennschluss.
While you were busy whooping your cookies after Brennschluss I called the Go For Broke and told them to pass the word down to get busy on Trowbridge again.
After twelve minutes, the cesium clocks of projected time and real time dropped to the single digits, whereupon the spectrograph, tracking the exhaust flame of the lander, went blank and after a row of zeros displayed the last, classic word: Brennschluss.
I think she reached brennschluss about six inches to the right of a standard piano keyboard, and coasted for another octave or two more before she reached apogee and began reentry.