Brennschluss

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."