Pyrotechnically driven nozzle restrictor
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United States of America Patent
Stats
-
Jul 25, 1995
Grant Date -
N/A
app pub date -
Nov 15, 1993
filing date -
Nov 15, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pyrotechnically driven device for restricting the area of the nozzle throat in a solid propellant rocket motor is disclosed. In one embodiment, the device includes a piston support mounted to the rocket motor in the exit cone. A restrictor is attached to a piston which is supported by the piston support. The restrictor is movable from a retracted position outside the nozzle throat to a restricting position within the throat upon actuation of the device. The piston and attached restrictor are driven by a pyrotechnic driving means that is actuatable separately from the solid propellant of the rocket motor. A locking means locks the restrictor in its restricting position.
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