GB710857A - Improvements in or relating to gas-turbine engines having means to facilitate starting - Google Patents
Improvements in or relating to gas-turbine engines having means to facilitate startingInfo
- Publication number
- GB710857A GB710857A GB2670450A GB2670450A GB710857A GB 710857 A GB710857 A GB 710857A GB 2670450 A GB2670450 A GB 2670450A GB 2670450 A GB2670450 A GB 2670450A GB 710857 A GB710857 A GB 710857A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- compressor
- drive
- gears
- pressure
- 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
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/26—Starting; Ignition
- F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
- F02C7/275—Mechanical drives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
- Gear Transmission (AREA)
Abstract
710,857. Gas turbine plant. ROLLS-ROYCE, Ltd. Dec.. 17, 1951 [Nov. 1, 1950], No. 26704/50, Class 110(3) [Also in Group XXVII] In a by-pass compound gas turbine engine comprising drive means operative during starting to drive both the high and low pressure engine rotors and including a drive shaft to transmit power from an external source to the rotor there is provided a declutching means. such as oneway clutch 32a. 32b, to permit rotors to rotate independently during normal engine operation. In order to prevent the exhaust gases from the multi-stage axial-flow turbine unit flowing back through the by-pass to the inlet of the high-pressure axial compressor 14a during starting, the by-pass is pressurized by connecting the low-pressure axial compressor 10a to compressor 14a. A shaft 21 that joins the low-pressure compressor 10a and its turbine is housed inside the shaft 20 through which the high pressure compressor 14a and turbine are coupled; the drive between the compressors is taken through a sleeve 24 on shaft 20 gears 25, 26, lay-shaft 27, gears 29, 38, lay-shaft 39, gears 41, 33, sleeve member 31, clutch 32a, 32b. gears 35, 36 and a sleeve 37 on shaft 21. The starting motor, which may be an electric motor or an air or gas operated turbine is coupled to either of sleeves 24 or 37 through means not shown which may include a free-wheel or disengageable clutch to enable the engine to overrun the starter motor when the former becomes self-operative; such a device could include a centrifugally actuated pawl. The drive means from the starting motor is arranged between shafts 20, 21 and a wall 11a in an annular duct which opens into both the coaxial by-pass and the intake to compressor 14b. In a modification, the drive from the starting motor to the low-pressure rotor assembly is effected through bevel gears and a spur gear on a lay-shaft while a free-wheel device is provided between the high and low pressure rotor assemblies. Specifications 471,368, [Group XXXIII], and 672,660 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2670450A GB710857A (en) | 1950-11-01 | 1950-11-01 | Improvements in or relating to gas-turbine engines having means to facilitate starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2670450A GB710857A (en) | 1950-11-01 | 1950-11-01 | Improvements in or relating to gas-turbine engines having means to facilitate starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB710857A true GB710857A (en) | 1954-06-23 |
Family
ID=10247913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2670450A Expired GB710857A (en) | 1950-11-01 | 1950-11-01 | Improvements in or relating to gas-turbine engines having means to facilitate starting |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB710857A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721167A1 (en) * | 1976-05-13 | 1977-11-24 | Gen Electric | METHOD AND DEVICE FOR THE AIR START OF A TURBOFAN ENGINE |
| DE2721165A1 (en) * | 1976-05-13 | 1977-12-01 | Gen Electric | METHOD AND DEVICE FOR THE AIR START OF A TURBOFAN ENGINE |
| CN103670718A (en) * | 2013-12-12 | 2014-03-26 | 中国南方航空工业(集团)有限公司 | Electric starting control method and device for gas turbine |
-
1950
- 1950-11-01 GB GB2670450A patent/GB710857A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721167A1 (en) * | 1976-05-13 | 1977-11-24 | Gen Electric | METHOD AND DEVICE FOR THE AIR START OF A TURBOFAN ENGINE |
| DE2721165A1 (en) * | 1976-05-13 | 1977-12-01 | Gen Electric | METHOD AND DEVICE FOR THE AIR START OF A TURBOFAN ENGINE |
| CN103670718A (en) * | 2013-12-12 | 2014-03-26 | 中国南方航空工业(集团)有限公司 | Electric starting control method and device for gas turbine |
| CN103670718B (en) * | 2013-12-12 | 2015-10-21 | 中国南方航空工业(集团)有限公司 | The electric starting controlling method of gas turbine and device |
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