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US 4,004,764 AGranted
Drogue chute extraction
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsVernon D. Burklund, W. James Stone, Joseph A. Schmidt
Life of this patent
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Abstract
A drogue parachute deployment system for an ejection seat comprises a dro parachute mounted in a bag on the seat, a rocket motor, and a tow line attached between the parachute and the rocket motor. Upon firing of the rocket motor, the bag is caused to rip and the parachute is deployed.
Claims4
A method for deploying a drogue parachute, said method comprising the steps of:
- igniting a rocket motor which is attached by means of a tow line to a closed bag containing a drogue parachute packed into the closed bag;
- pulling, by means of said rocket motor and said tow line, the bag and drogue parachute therein through the air;
- and
- ripping said bag off said drogue parachute through the action of said motor for releasing said drogue parachute into an air stream from said bag and said rocket motor.
1 more element
Apparatus for deploying a drogue parachute comprising:
- a. a bag in which said drogue parachute is packed;
- b. a tow line attached by one end to said bag;
- and
- c. a rocket motor attached to the other end of said tow line;
- said bag being so constructed that when said rocket motor is fired and a predetermined amount of force is exerted on it through said tow line it will rip away from said drogue parachute and allow the drogue parachute to deploy.
2 more elements
Dependencies are inferred from the claim text.