GB812209A - Pilot burner for jet engines - Google Patents
Pilot burner for jet enginesInfo
- Publication number
- GB812209A GB812209A GB3543456A GB3543456A GB812209A GB 812209 A GB812209 A GB 812209A GB 3543456 A GB3543456 A GB 3543456A GB 3543456 A GB3543456 A GB 3543456A GB 812209 A GB812209 A GB 812209A
- Authority
- GB
- United Kingdom
- Prior art keywords
- venturi
- pipe
- pilot burner
- outlet
- main combustion
- 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 5
- 239000000446 fuel Substances 0.000 abstract 5
- 239000000203 mixture Substances 0.000 abstract 4
- 238000011144 upstream manufacturing Methods 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
- F23R3/20—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants incorporating fuel injection means
-
- 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
- F02K7/10—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 characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/34—Feeding into different combustion zones
- F23R3/343—Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
812,209. Burners. CONTINENTAL AVIATION & ENGINEERING CORPORATION. Nov. 20, 1956, No. 35434/56. Classes 75(1) and 75(3) [Also in Group XII] A pilot burner supported in a main combustion pipe, Fig. 1 (not shown) of a ram jet engine comprises a burner pipe 25 having an upstream inlet 15 and a downstream outlet 16, a venturi structure 30 located in the pilot burner pipe, a passage 52 in the venturi through which part of the air in the venturi passes at reduced velocity, means for mixing fuel with the reduced velocity air and discharging the mixture into the venturi whereby to provide a combustible mixture of optimum fuel air ratio regardless of conditions in the main combustion pipe, a flame holder, preferably a perforated cone 26, near the outlet of the pilot burner pipe 25 and ignition means such as a sparking plug 27 located in the pilot burner pipe downstream of the flame holder 26. The passage 52 for air of reduced velocity is formed in a mixing device 50 located centrally of the venturi 30 immediately downstream of the narrowest part thereof. The fuel is sprayed radially inwards from jets 51 into the passage 52 and the mixture is discharged from an outlet jet 53. The fuel supply to the jets 51 is controlled by a metering device 40 which is responsive to the air pressure at the inlet 15 of the pilot burner pipe 25 and to the air pressure at the narrowest part of the venturi, the first pressure being conveyed to the metering device by a pipe 43 connected to an annular groove 42 in the venturi connected to tubes 41 carried by the venturi with their open ends facing upstream, the second pressure being conveyed to the metering device by a pipe 47 connected to another groove 44 connected by holes 45 and a slot 46 to the narrowest part of the venturi. The burner pipe 25 increases in diameter from the venturi to its outlet 16. The sparking plug points are disposed behind a shield 29. Channelled flame spreaders diverge from the outlet 16 of the pilot burner pipe into the main combustion pipe. Fuel is injected into the main combustion pipe of the engine in an upstream direction by nozzles on pipes encircling the pilot burner. The main combustion pipe has a plurality of inwardly extending annular flanges serving to slow down the flow of the burning mixture.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US305796A US2780916A (en) | 1952-08-22 | 1952-08-22 | Pilot burner for jet engines |
| FR1166520D FR1166520A (en) | 1956-11-20 | 1956-12-12 | Pilot burner for reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812209A true GB812209A (en) | 1959-04-22 |
Family
ID=1744290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3543456A Expired GB812209A (en) | 1952-08-22 | 1956-11-20 | Pilot burner for jet engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812209A (en) |
-
1956
- 1956-11-20 GB GB3543456A patent/GB812209A/en not_active Expired
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