burn·out (bûrn out )n. 1. A failure in a device attributable to burning, excessive heat, or friction. 2. Aerospace a. The termination of rocket or jet-engine operation because of fuel exhaustion or shutoff. b. The point at which this termination occurs. 3. a. Physical or emotional exhaustion, especially as a result of long-term stress or dissipation. b. One who is worn out physically or emotionally, as from long-term stress. |
The point in time or in the missile trajectory when combustion of fuels in the rocket engine is terminated by other than programmed cutoff.
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