GB1432262A - Jet propulsion efflux ducts - Google Patents
Jet propulsion efflux ductsInfo
- Publication number
- GB1432262A GB1432262A GB518573A GB518573A GB1432262A GB 1432262 A GB1432262 A GB 1432262A GB 518573 A GB518573 A GB 518573A GB 518573 A GB518573 A GB 518573A GB 1432262 A GB1432262 A GB 1432262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- duct
- gas flow
- disposed
- groups
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/46—Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
1432262 Jet propulsion nozzles BRITISH AIRCRAFT CORP Ltd 25 Jan 1974 [1Feb 1973] 5185/73 Heading F1J The invention relates to a jet propulsion discharge duct in which a plurality of blades 4 project radially inwardly from the wall of the duct, each blade being disposed or capable of being disposed at an angle of incidence to the gas flow such that each blade produces at least one vortex in the flow, the blades being so arranged in groups that the - combined effect of the vortices is to modify the cross-sectional shape of the gas flow rearwardly of the duct outlet. The discharge duct 3 shown has twelve blades 4 pivotally mounted adjacent the outlet, the blades being disposed in four groups 5, 6, 7, 8 each comprising three blades 4, the groups being disposed symmetrically at either side of the vertical plane III-III. Each blade is movable by means of an actuator 9 whereby it may be set in line with the gas flow or at an inclination thereto such that it causes formation of vortices in the gas flow. The blades of groups such as 5 and 6 are arranged to create oppositely rotating vortices. in Fig. 4 the blades are pivotally mounted each about an axis 10, 10 which is inclined to a longitudinal axis X', X'; each blade is movable between a retracted position in which it is disposed within a recess 11 in the wall of the duct and an operative position in which it extends radially into the duct at such an angle as to create vortices in the gas flow. In a further embodiment Fig. 5 the discharge duct 2a opens into a down-stream portion 12, the vortex-producing blades 4 or 4a being mounted in the portion 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB518573A GB1432262A (en) | 1973-02-01 | 1973-02-01 | Jet propulsion efflux ducts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB518573A GB1432262A (en) | 1973-02-01 | 1973-02-01 | Jet propulsion efflux ducts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1432262A true GB1432262A (en) | 1976-04-14 |
Family
ID=9791314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB518573A Expired GB1432262A (en) | 1973-02-01 | 1973-02-01 | Jet propulsion efflux ducts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1432262A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4439104A (en) * | 1981-06-15 | 1984-03-27 | The Garrett Corporation | Compressor inlet guide vane and vortex-disturbing member assembly |
US4844695A (en) * | 1988-07-05 | 1989-07-04 | Pratt & Whitney Canada Inc. | Variable flow radial compressor inlet flow fences |
US5373691A (en) * | 1993-06-23 | 1994-12-20 | Allied-Signal Inc. | Inlet guide vane dewhistler |
RU2492337C2 (en) * | 2008-02-29 | 2013-09-10 | Эрсель | Rear edge for aircraft engine equipped with movable chevron elements, and aircraft car equipped with such rear edge |
-
1973
- 1973-02-01 GB GB518573A patent/GB1432262A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4439104A (en) * | 1981-06-15 | 1984-03-27 | The Garrett Corporation | Compressor inlet guide vane and vortex-disturbing member assembly |
US4844695A (en) * | 1988-07-05 | 1989-07-04 | Pratt & Whitney Canada Inc. | Variable flow radial compressor inlet flow fences |
US5373691A (en) * | 1993-06-23 | 1994-12-20 | Allied-Signal Inc. | Inlet guide vane dewhistler |
RU2492337C2 (en) * | 2008-02-29 | 2013-09-10 | Эрсель | Rear edge for aircraft engine equipped with movable chevron elements, and aircraft car equipped with such rear edge |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |