US3387456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamic shield device for vtol jet aircraft engine exhaust
Assignee: Northrop Grumman Corp
•
Filing: 1966-06-21
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Granted: 1968-06-11
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Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Feder Aaron
- 👤 Lavi Rahim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:27
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/2093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A VTOL AIRCRAFT, SAID AIRCRAFT INCLUDING JET ENGINE MEANS FOR PROVIDING THRUST FOR VERTICAL LIFT OFF THE GROUND, THE IMPROVEMENT COMPRISING MEANS FOR GENERATING AN AERODYNAMIC SHIELD FOR BLOCKING THE ENTRY OF ENGINE EXHAUST GASSES INTO THE AIR INTAKE OF SAID ENGINE MEANS COMPRISING PLENUM CHAMBER MEANS LOCATED BETWEEN THE ENGINE MEANS EXHAUST AND THE ENGINE MEANS INTAKE, AND MEANS FOR SUPPLYING COMPRESSED AIR TO SAID CHAMBER MEANS, SAID CHAMBER MEANS HAVING RELATIVELY NARROW ORIFICE MEANS FORMED THEREIN FOR DIRECTING A JET OUTWARDLY FROM SAID ENGINE MEANS IN A PLANE SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID ENGINE MEANS TO FORM A SHIELD BETWEEN SAID EXHAUST GASSES AND SAID ENGINE AIR INTAKE, SAID ORIFICE MEANS BEING SYMMETRICALLY ARRANGED ABOUT SAID ENGINE MEANS TO PROVIDE INSIGNIFICANT NET THRUST THEREON.
Claim 2
Dependent Claim
130 words
IN A VTOL AIRCRAFT, SAID AIRCRAFT INCLUDING JET ENGINE MEANS FOR PROVIDING THRUST FOR VERTICAL LIFT OFF THE GROUND, THE IMPROVEMENT COMPRISING MEANS FOR GENERATING AN AERODYNAMIC SHIELD FOR BLOCKING THE ENTRY OF ENGINE EXHAUST GASSES INTO THE AIR INTAKE OF SAID ENGINE MEANS COMPRISING PLENUM CHAMBER MEANS LOCATED BETWEEN THE ENGINE MEANS EXHAUST AND THE ENGINE MEANS INTAKE, AND MEANS FOR SUPPLYING COMPRESSED AIR TO SAID CHAMBER MEANS, SAID CHAMBER MEANS HAVING RELATIVELY NARROW ORIFICE MEANS FORMED THEREIN FOR DIRECTING A JET OUTWARDLY FROM SAID ENGINE MEANS IN A PLANE SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID ENGINE MEANS TO FORM A SHIELD BETWEEN SAID EXHAUST GASSES AND SAID ENGINE AIR INTAKE, SAID ORIFICE MEANS BEING SYMMETRICALLY ARRANGED ABOUT SAID ENGINE MEANS TO PROVIDE INSIGNIFICANT NET THRUST THEREON.
References Cited (Backward Citations)
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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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |