GB669989A - Improvements in or relating to means for sucking in the boundary layers on the surfaces of reaction jet aircraft - Google Patents
Improvements in or relating to means for sucking in the boundary layers on the surfaces of reaction jet aircraftInfo
- Publication number
- GB669989A GB669989A GB19293/48A GB1929348A GB669989A GB 669989 A GB669989 A GB 669989A GB 19293/48 A GB19293/48 A GB 19293/48A GB 1929348 A GB1929348 A GB 1929348A GB 669989 A GB669989 A GB 669989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nozzle
- ejector
- air
- propulsion
- wing
- 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
- 238000002485 combustion reaction Methods 0.000 abstract 3
- 239000007789 gas Substances 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 229920000136 polysorbate Polymers 0.000 abstract 1
- 230000001141 propulsive effect Effects 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/08—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being continuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
- B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/04—Boundary layer controls by actively generating fluid flow
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
669,989. Jet propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. July 19, 1948. [July 21, 1947] No. 19293/48. Class 110(iii). [Also in Group XXXIII] A jet propulsion unit, arranged inside an aircraft wing with its air inlet near the leading edge and its propulsion nozzle near the trailing edge, has an ejector, arranged between the combustion chamber and propulsion nozzle, which sucks air from a compartment arranged around it in the wing which compartment is in turn connected to slots or apertures on the surface of the wing. A propulsive duct formed by an intake diffuser 41, a combustion chamber 43 and a propulsion nozzle 49 is mounted inside an aircraft wing O. A two-stage ejector 46, 48, arranged be tween the combustion chamber and propulsion nozzle, sucks air from compartments 45, 47 which are connected to suction slots 51, 52 provided on the upper surface of the wing. The nozzle 44 feeding the ejector 46, 48 and the propulsion nozzle 49 are flattened. It is stated that the suction of the ejector may be adjusted by varying the area of the passages through which the air enters the ejector. The Specification as open to inspection under Sect. 91, comprises also the use of the exhaust gases of a gas turbine jet propulsion engine to suck air out of two compartments connected by conduits to points on the surface of the aircraft. In this arrangement, Fig. 2 (Cancelled) the exhaust gases from the turbine 5 pass through a nozzle 6 formed as a two-stage aspirator sucking air out of two compartments 8 and 10 connected through conduits 28, 30 to the surfaces from which the boundary layer is to be removed. The aspirator has sliding sleeves 7 and 9 which allow the amount of boundary layer air sucked off to be controlled. Hollow arms 24 allow air to pass over the surface of the movable part 12 of the variable area nozzle to keep it cool and passages 23, 22, 26 and 27 allow the boundary layer on the part 12 to be removed. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR669989X | 1947-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB669989A true GB669989A (en) | 1952-04-09 |
Family
ID=9016028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19293/48A Expired GB669989A (en) | 1947-07-21 | 1948-07-19 | Improvements in or relating to means for sucking in the boundary layers on the surfaces of reaction jet aircraft |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB669989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943530A (en) * | 2014-03-27 | 2015-09-30 | 中航商用航空发动机有限责任公司 | Ventilation cooling device of engine core bin |
-
1948
- 1948-07-19 GB GB19293/48A patent/GB669989A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943530A (en) * | 2014-03-27 | 2015-09-30 | 中航商用航空发动机有限责任公司 | Ventilation cooling device of engine core bin |
| CN104943530B (en) * | 2014-03-27 | 2017-07-28 | 中航商用航空发动机有限责任公司 | The ventilation cooling device in engine core cabin |
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