US3642234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Confedereration Suisse
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Filing: 1969-12-23
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Granted: 1972-02-15
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Expires: 1989-12-23
Abstract
Abstract An aircraft for high-speed flight comprising a fuselage, a main plane or wing and a retractable stabilizer or empennage comprising aerofoils adapted and profiled for subsonic flight conditions and arranged to produce, when deployed, a lift-giving rise to a nose-up pitching moment.
Inventors
- 👤 Heinrich Kamber
- 👤 Werner Hausammann
- 👤 Henri Deplante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
B; B64; B64C; B64C5/00; B64C5/10; B64C5/12; B64C1/00; B64C1/0009; B64C23/00; B64C23/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
In an aircraft for high-speed flight the combination comprising: a fuselage; a main wing; a pair of stabilizer aerofoils; means mounting the stabilizer aerofoils for movement between retracted and deployed positions relative to the fuselage; and driving means for effecting movement of the stabilizer aerofoils, which are adapted and profiled for subsonic flight conditions to produce in the deployed condition a lift giving rise to a nose-up pitching movement, the improvement comprising: housing means disposed entirely inside said fuselage for accommodating each of said aerofoils when in retracted position whereby to withdraw the same from the streamlined flow of ambient air over said fuselage, said fuselage having openings formed on opposiTe sides thereof in communication with said housing means for the passage of respective aerofoils out of or into said housing means, and means for closing each said openings when said aerofoils are in retracted position, said closure means being mounted for movement to an inoperative position within the interior of said housing to open said openings for deployment of said aerofoils.
Claim 2
Dependent Claim
172 words
In an aircraft for high-speed flight the combination comprising: a fuselage; a main wing; a pair of stabilizer aerofoils; means mounting the stabilizer aerofoils for movement between retracted and deployed positions relative to the fuselage; and driving means for effecting movement of the stabilizer aerofoils, which are adapted and profiled for subsonic flight conditions to produce in the deployed condition a lift giving rise to a nose-up pitching movement, the improvement comprising: housing means disposed entirely inside said fuselage for accommodating each of said aerofoils when in retracted position whereby to withdraw the same from the streamlined flow of ambient air over said fuselage, said fuselage having openings formed on opposiTe sides thereof in communication with said housing means for the passage of respective aerofoils out of or into said housing means, and means for closing each said openings when said aerofoils are in retracted position, said closure means being mounted for movement to an inoperative position within the interior of said housing to open said openings for deployment of said aerofoils.
Claim 3
Dependent Claim
28 words
The combination according to claim 1, wherein the retractable aerofoils each contain a slot which opens tangentially onto the upper surface of the aerofoil towards the trailing edge.
Claim 4
Dependent Claim
19 words
The combination according to claim 1, wherein the retractable aerofoils each have a separate slat at the leading edge.
Claim 5
Dependent Claim
33 words
The combination according to claim 1, wherein each opening is closable by two spring-loaded flaps respectively cooperating with the upper and lower surfaces of the retractable aerofoil during the retracting or deploying movements.
Claim 6
Dependent Claim
80 words
The combination according to claim 4, wherein the joint line between the two flaps associated with one and the same retractable aerofoil, is slightly above the line of the trailing edge of said aerofoil, and the bottom flap is mounted to pivot about the longitudinal axis disposed beneath said line so that said flap tilts under the action of the thrust exerted on it by the aerofoil while the top flap is deflected by the upper surface of the aerofoil.
Claim 7
Dependent Claim
31 words
The combination according to claim 4, including mounting means for the upper of the two flaps comprising a rocking arm and pivotal means connecting the top flap to the rocking arm.
Claim 8
Dependent Claim
44 words
The combination according to claim 1, wherein said retractable aerofoils are pivoted about their respective axes at an angle with each other which is substantially bisected by the longitudinal plane of said aircraft, whereby said aerofoils when in deployed position form a dihedral system.
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |