US3584811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices of producing aerodynamic lift
Assignee: BAE Systems PLC
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Filing: 1969-04-29
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Granted: 1971-06-15
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Expires: 1989-04-29
Abstract
Abstract An aerodynamic lift-producing body for an aircraft, in the form of a blown pole, in which air can be blown selectively in either circumferential direction over the outer surface of the pole, or in both directions simultaneously.
Inventors
- 👤 Lionel Edward Leavy
- 👤 John Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:40
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A device for producing aerodynamic lift, of the blown pole type, comprising an outer sleeve having a first group of slots angled to direct issuing air in one circumferential direction to induce air circulation around the sleeve in that direction, and a second group of slots angled oppositely to said first group of slots to direct issuing air in the opposite circumferential direction to induce air circulation around the sleeve in said opposite direction, and a hollow inner liner disposed coaxially and concentrically within said outer sleeve and angularly movable relatively thereto about the axis of the sleeve, the blowing air being delivered via the interior of the inner liner to at least one port in the liner wall that can be placed by said relative angular movement selectively in communication with said groups of angled slots in the outer sleeve.
Claim 2
Independent Claim
141 words
A device for producing aerodynamic lift, of the blown pole type, comprising an outer sleeve having a first group of slots angled to direct issuing air in one circumferential direction to induce air circulation around the sleeve in that direction, and a second group of slots angled oppositely to said first group of slots to direct issuing air in the opposite circumferential direction to induce air circulation around the sleeve in said opposite direction, and a hollow inner liner disposed coaxially and concentrically within said outer sleeve and angularly movable relatively thereto about the axis of the sleeve, the blowing air being delivered via the interior of the inner liner to at least one port in the liner wall that can be placed by said relative angular movement selectively in communication with said groups of angled slots in the outer sleeve.
Claim 3
Dependent Claim
34 words
A device according to claim 1, arranged such that the inner liner can be rotated to a position where the port therein is in communication with substantially equal numbers of slots from both groups.
Claim 4
Dependent Claim
36 words
A device according to claim 1, arranged such that the inner liner can be turned to a position in which communication between the interior thereof and any of the slots in the outer sleeve is cutoff.
Claim 5
Dependent Claim
12 words
An aircraft fitted with a blown pole device according to claim 1.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |