GB483497A - Improvements relating to the control of drag on the outer surfaces of aircraft - Google Patents
Improvements relating to the control of drag on the outer surfaces of aircraftInfo
- Publication number
- GB483497A GB483497A GB2875136A GB2875136A GB483497A GB 483497 A GB483497 A GB 483497A GB 2875136 A GB2875136 A GB 2875136A GB 2875136 A GB2875136 A GB 2875136A GB 483497 A GB483497 A GB 483497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- apertures
- inch
- pitch
- aircraft
- airstream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
Abstract
483,497. Reducing surface friction between a body and a fluid. FAIREY AVIATION CO., Ltd., LOBELLE, M. J. O., HOOPER, M. S., and MORREY, P. Oct. 22, 1936, Nos. 28751/36, 10918/37, and 10919/37. Drawings to Specification. [Class 4] [Also in Group XXI] Means for controlling drag on the surfaces of bodies, e.g. aircraft, propellers, torpedoes, or submarines, moving in fluids and formed with a plurality of apertures in the surface through which fluid is withdrawn comprise apertures arranged only over the trailing two-thirds of the top or corresponding surface of the body, and over the trailing four-fifths of the bottom or corresponding surface thereof. As shown the apertures are arranged in their most advantageous positions which are determined from a study of the airflow and may be connected individually or in groups with means for enabling a suction effect to be obtained at any predetermined apertures. The apertures may be formed as forwardly-opening louvres formed by slitting the skin and pressing it inwards in advance of the slit or by chamfered plates. The pitch of the slits may be determined from the formula l.q=60 to 80 where l is the pitch in feet in the direction of the airstream and q is the velocity of the airstream measured not closer than <1>/10 inch above the surface. The length of the slits may be from 0À025 inch and the depth of the openings from 0À01 inch to 0À04 inch. According to the first Provisional Specification the apertures may be holes of <1>/10 to 1/32 inch diameter and 1/10 to “ inch pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2875136A GB483497A (en) | 1936-10-22 | 1936-10-22 | Improvements relating to the control of drag on the outer surfaces of aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2875136A GB483497A (en) | 1936-10-22 | 1936-10-22 | Improvements relating to the control of drag on the outer surfaces of aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB483497A true GB483497A (en) | 1938-04-21 |
Family
ID=10280537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2875136A Expired GB483497A (en) | 1936-10-22 | 1936-10-22 | Improvements relating to the control of drag on the outer surfaces of aircraft |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB483497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2639874A (en) * | 1948-09-10 | 1953-05-26 | Edward A Stalker | Helicopter wings and other aircraft structures with boundary layer control |
-
1936
- 1936-10-22 GB GB2875136A patent/GB483497A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2639874A (en) * | 1948-09-10 | 1953-05-26 | Edward A Stalker | Helicopter wings and other aircraft structures with boundary layer control |
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