Patent US3633847A successfully refreshed from Google Patents.
US3633847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft with lift-and-cruise fans
Assignee: Hamburger Flugzeugbau GmbH
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Filing: 1970-01-13
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Granted: 1972-01-11
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Expires: 1990-01-13
Abstract
Abstract A propulsion-and-lift fan assembly for STOL-type aircraft in which the fan is driven by hot gases produced by a gas generator (turbine) and the fan assembly is mounted in a duct opening at one axial end toward the forward-flight direction. The fan assembly includes a blade arrangement serving as air guide. The assembly is swingable through an angle of 0* to more than 100* about an axis perpendicular to the longitudinal axis or forwardflight direction so that there is negligible loss as a consequence of air diversion, and airflow control flaps and jalousies are avoided.
Inventors
- 👤 Wilhelm Fricke
- 👤 Werner Hoose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:43
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
In an airCraft, in combination means forming a forwardly open air passage having a longitudinal axis, a hot-gas generator mounted on said aircraft, a gas-driven lift-and-cruise fan assembly mounted on said aircraft in said passage and provided with means defining a duct having an air outflow axis, mechanism for swinging said assembly in said air passage relative to said means forming said passage about a pivot axis in the plane of the fan of said assembly through an angle ranging from 0* to at least 100* included between said longitudinal axis and said air outflow axis, and at least one gas duct connecting said generator with said assembly for driving same.
Claim 2
Dependent Claim
111 words
In an airCraft, in combination means forming a forwardly open air passage having a longitudinal axis, a hot-gas generator mounted on said aircraft, a gas-driven lift-and-cruise fan assembly mounted on said aircraft in said passage and provided with means defining a duct having an air outflow axis, mechanism for swinging said assembly in said air passage relative to said means forming said passage about a pivot axis in the plane of the fan of said assembly through an angle ranging from 0* to at least 100* included between said longitudinal axis and said air outflow axis, and at least one gas duct connecting said generator with said assembly for driving same.
Claim 3
Dependent Claim
51 words
The combination defined in claim 1 wherein a fan is rotatable about said air outflow axis and said assembly includes an array of fan-driving blades contacted by the hot gas from said generator, said pivot axis being perpendicular to said longitudinal and air outflow axes and lying substantially in said plane.
Claim 4
Dependent Claim
23 words
The combination defined in claim 1 wherein said means has a lower part and said assembly is swingably mounted on said lower part.
Claim 5
Dependent Claim
13 words
The combination defined in claim 1 wherein said mechanism includes a hydraulic drive.
Claim 6
Dependent Claim
18 words
The combination defined in claim 1 wherein said assembly forms part of a single unit with said generator.
Claim 7
Dependent Claim
19 words
The combination defined in claim 5 wherein said pivot axis lies in a horizontal median plane through said assembly.
Claim 8
Dependent Claim
21 words
The combination defined in claim 6 wherein said pivot axis lies at a bottom part of said means defining said passage.
Claim 9
Dependent Claim
156 words
The combination defined in claim 7 wherein said hot-gas generator includes a nacelle suspended from a fixed airfoil of said aircraft and said means is mounted integrally on said nacelle, said assembly including an ellipsoidal central body centered on said air outflow axis, an apron spacedly surrounding said body and converging axially away from said air passage in a position of said assembly wherein said longitudinal and air outflow axes are substantially parallel to one another, said fan surrounding said body for inducing the flow of air through the space between said body and said apron, at least one scroll connected to said apron and surrounding said array of blades for directing hot gases from said generator against said blades to drive said fan, and a pivot between said means and said assembly substantially in the plane of said array of blades defining said pivot axis perpendicular to said longitudinal axis and said air outflow axis.
Claim 10
Dependent Claim
20 words
The combination defined in claim 8, wherein said scroll and said duct are aligned and interconnected along said pivot axis.
Claim 11
Dependent Claim
68 words
The combination defined in claim 9, wherein at least a pair of scrolls are provided on opposite sides of a longitudinal median plane through said gas generator and said assembly containing said longitudinal axis and said air outflow axis, at least two gas ducts being provided for respectively supplying hot gases to said scrolls and communicating therewith along said pivot axis on opposite sides of said median plane.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |