Burnout is the point on the trajectory of a rocket at which the fuel supply is exhausted or cut off. In solid fuel rockets (see solid-propellant rocket motor), controlled burnout is achieved by lowering the pressure in the combustion chamber or by opening vents to drop the temperature below the combustion point. In liquid fuel rockets (see liquid-propellant engines) the fuel supply is simply turned off.
Related category ROCKETRY TERMINOLOGY
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