Aircraft ejection seat catapult device
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorEdwin R. Schultz
Life of this patent
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Abstract
The acceleration applied to an ejection seat during the catapult phase of emergency escape from an aircraft is limited to a maximum value which can be tolerated by the ejectee by incrementally venting exhaust gas from the high pressure chamber of the ejection catapult. Such venting may be accomplished mechanically by a mass which acts in response to acceleration to open venting orifices, the mass being preloaded to prevent its movement until a desired acceleration is experienced. Alternatively, venting may be accomplished electromechanically.
Claims8
In an ejection system for emergency escape from an aircraft comprising an ejection seat and an ejection apparatus for ejecting said seat from said aircraft, said ejection apparatus comprising at least two telescopically cooperating parts, a first one of said parts having an opening at its top, with the bottom of said first part being closed and attached to said aircraft, and a second one of said parts having an opening at its bottom, with the top of said second part being closed and attached to said seat, said second part containing at least one propellant charge, the improvement which comprises means cooperatively associated with said second part to vent exhaust gas generated by said propellant charge when ignited, so long as the acceleration of said apparatus is greater than a desired level of acceleration and to cease said venting when said acceleration is no greater than said desired level.
Dependencies are inferred from the claim text.