jetavator
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Jetavator diverting exhaust
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A control surface that may be moved into or against a rocket's jet stream
to change the direction of the jet flow for thrust
vector control. The jetavator is a variation of the jet-vane used on
early rockets such as the V-2 and Redstone,
to provide stabilization at takeoff. The jetavator is a ring placed around
the circumference of the motor nozzle. Deflecting the ring deflects the
exhaust, just as with vanes. However, the jetavator has the advantage of
not causing propulsion losses when in the neutral position, since, unlike
vanes, it does not interfere with the exhaust flow. Jetavators have been
most frequently applied to control of solid-propellant rockets.
Related category
• SPACECRAFT
NAVIGATION AND CONTROL
Source:
NASA History Office
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