Patent US3756546A successfully refreshed from Google Patents.
US3756546A
Expired / Lapsed
US
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Aircrew escape system
Assignee: United States Department of the Navy
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Filing: 1971-11-23
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Granted: 1973-09-04
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Expires: 1991-11-23
Abstract
Abstract An aircrew escape system comprising a capsule adapted to contain a crewmember, having attached thereto a deployable parawing controllable by the crewmember, and a deployable tractor rocket connected to the top of the capsule by a length of tow rope. Contained within the capsule is a control unit by which the crewmember, once in position, initiates the burn of the tractor rocket, initiating separation of the capsule from the aircraft and through which the crewmember can control the jettisoning of the tractor rocket and the ignition of an air-breathing powerplant mounted on the capsule. The parawing, in its deployed state, is aligned at an angle of attack relative the longitudinal axis of the capsule by preselected lengths of supporting shrouds having control shrouds attached to the trailing edge thereof terminating at a control stick in the capsule. Accordingly, when the capsule is accelerated by the tractor rocket to a velocity where the lift force of the parawing substantially balances the weight of the capsule the tractor rocket is released, the powerplant is started and the capsule is in position for controlled horizontal flight.
Inventors
- 👤 R Carson
- 👤 J Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
An aircrew escape system for separating and transporting a crewmember away from a disabled aircraft comprising, in combination: glider means formed to be releasably secured to the aircraft and to receive the crewmember for deploying and producing a velocity-responsive dorsal lifting force, said glider means including thrust producing means attached to align along the longitudinal axis thereof for selectively producing an aftward thrust force; and force producing means releasably connected to the forward end of said glider means for accelerating said glider means from the aircraft.
Claim 2
Dependent Claim
86 words
An aircrew escape system for separating and transporting a crewmember away from a disabled aircraft comprising, in combination: glider means formed to be releasably secured to the aircraft and to receive the crewmember for deploying and producing a velocity-responsive dorsal lifting force, said glider means including thrust producing means attached to align along the longitudinal axis thereof for selectively producing an aftward thrust force; and force producing means releasably connected to the forward end of said glider means for accelerating said glider means from the aircraft.
Claim 3
Dependent Claim
31 words
An aircrew escape system according to claim 1, further comprising: said glider means including control means operatively connected to release said force producing means and to start said thrust producing means.
Claim 4
Dependent Claim
52 words
An aircrew escape system according to claim 2, further comprising: said glider means including a cylindrical housing faired at the forward end and closed at the aft end, a doorway formed in said housing for receiving the crewmember and a window formed in the ventral side of the housing for viewing therethrough.
Claim 5
Dependent Claim
34 words
An aircrew escape system according to claim 3, further comprising: said glider means including deployable wing means operatively connected to said housing for deploying and forming a lifting surface proximate the dorsal side thereof.
Claim 6
Dependent Claim
46 words
An aircrew escape system according to claim 4, further comprising: said control means including a control unit mounted in said capsule, switch means mounted on said control unit for producing a control signal connected to release said force producing means and start said thrust producing means.
Claim 7
Dependent Claim
82 words
An aircrew escape system according to claim 5, further comprising: said force producing means including a cylindrical rocket casing, a plurality of exhaust nozzles disposed around the periphery and proximate the upper end of said casing aligned to exhaust towards the aft end thereof, solid propellant contained within the said casing and a tow rope connected at one end thereof to the aft end of said casing and at the other end thereof releasably connected to the forward end of said housing.
Claim 8
Dependent Claim
93 words
An aircrew escape system according to claim 6, further comprising: said wing means including a parawing collapsible for storage along the dorsal side of said housing, support shroud means connected at one end thereof to the peripheral edges of said parawing and at the other end to said housing proximate the upper dorsal side thereof, a control stick pivotally mounted in said housing and trailing edge control shrouds connected respectively to the left and right hand ends of the trailing edge of said parawing and at the other end to said control stick.
Claim 9
Dependent Claim
50 words
An aircrew escape system according to claim 7, further comprising: said support shroud means including a plurality of shrouds of preselected lengths arranged to attach the leading edge of said parawing a distance greater from the longitudinal axis of said housing than the corresponding distance of the trailing edge thereof.
Claim 10
Dependent Claim
94 words
An aircrew escape system according to claim 8, further comprising: said thrust producing means including a turbojet operatively connected to start upon receiving said control signal and operatively connected to said propellant tank and to the dorsal side of said capsule, an intake duct open at one end and aligned to receive ram air connected at the other end to the input side of said turbojet and an exhaust duct connected at one end to the output side of said turbojet and opening at the other end at the aft end of said housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |