Patent US3640486A successfully refreshed from Google Patents.
US3640486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flying wing having ground-effect takeoff and landing
Assignee: Bertin Technologies SAS
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Filing: 1970-03-24
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Granted: 1972-02-08
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Expires: 1990-03-24
Abstract
Abstract Aerodyne for the transoceanic transport of freight, with a thick profile flying wing between thin longitudinal panels disposed in the direction of normal travel and provided at the bottom with transverse flaps adapted to project downwards or be retracted, one transverse flap being near the leading edge of the wing while other flaps are in an intermediate position and in a rear position, the said transverse flaps when in the downwardly extended position cooperating with the wing undersurface, the longitudinal panels and an intermediate longitudinal bulkhead, to form a space which acts as a cushion fed by pressure fluidinjection means. The latter comprise a static pump which is uncovered by the downward movement of the leading edge flap. The pressure fluid supply is provided solely at the front of the cushion, allowing action on the thrust center of the ground effect by means of the set of intermediate flap and rear flaps.
Inventors
- 👤 Jean Henri Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:49
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
In an aerodyne having a thick profile flying wing with protruding side panels and at least one intermediate bulkhead extending longitudinally in the direction of normal travel, movable transverse flaps adapted to project downwards from the bottom of said wing or be retracted into the wing profile, at least one of said transverse flaps being disposed near the leading edge of the wing while other flaps are disposed respectively in an intermediate position and in a rear position, the said transverse flaps when in the downwardly extended position cooperating with the wing undersurface, with the said longitudinal side panels and with the said longitudinal intermediate bulkhead, to form a cushion space, the improvement which comprises pressure fluid-injection means positioned at the said leading edge and opening into the said cushion space and comprising a maskable static pump-type air-inducing injector associated with the said leading edge flap to be unmasked by the downward movement thereof, whereby the pressure fluid supply for the said cushion space is provided at the front thereof ahead of the said intermediate and rear flaps.
Claim 2
Dependent Claim
178 words
In an aerodyne having a thick profile flying wing with protruding side panels and at least one intermediate bulkhead extending longitudinally in the direction of normal travel, movable transverse flaps adapted to project downwards from the bottom of said wing or be retracted into the wing profile, at least one of said transverse flaps being disposed near the leading edge of the wing while other flaps are disposed respectively in an intermediate position and in a rear position, the said transverse flaps when in the downwardly extended position cooperating with the wing undersurface, with the said longitudinal side panels and with the said longitudinal intermediate bulkhead, to form a cushion space, the improvement which comprises pressure fluid-injection means positioned at the said leading edge and opening into the said cushion space and comprising a maskable static pump-type air-inducing injector associated with the said leading edge flap to be unmasked by the downward movement thereof, whereby the pressure fluid supply for the said cushion space is provided at the front thereof ahead of the said intermediate and rear flaps.
Claim 3
Dependent Claim
20 words
An aerodyne according to claim 1, wherein the said flying wing is of a general rectangular shape in plan view.
Claim 4
Dependent Claim
36 words
An aerodyne according to claim 1, wherein the said cushion space starts at its front adjacent the leading edge of the wing and terminates at its rear at a distance forwardly of the trailing edge thereof.
Claim 5
Dependent Claim
53 words
An aerodyne according to claim 1, wherein said air-inducing injector comprises, when unmasked, a downwardly extending open-ended duct for the flow of induced air, said duct having an upper air intake end adjacent said wing leading edge and a lower pressure fluid discharge end opening into said cushion space at the front thereof.
Claim 6
Dependent Claim
29 words
An aerodyne according to claim 4, wherein said duct is bounded by two opposite transversely extending walls, one of said walls being a surface of said leading edge flap.
Claim 7
Dependent Claim
23 words
An aerodyne according to claim 5, wherein said surface is the rear surface of said leading edge flap when in downwardly extended position.
Claim 8
Dependent Claim
28 words
An aerodyne according to claim 6, wherein said intake and discharge ends of said duct are substantially blinded by said leading edge flap when in upwardly retracted position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |