General Electric GE38: Difference between revisions
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→Design and development: GLC38 == General Electric/Lycoming Commercial 38. Removed the part saying the T407 was canceled in 1990. (It was just the P-7 plane ... the T407 would be offered for another military proposal in 1991.) |
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The GE27 was developed in the early 1980s under the "Modern Technology Demonstrator Engines" (MTDE) program sponsored by the [[United States Army]] [[Aviation Applied Technology Directorate]].<ref name="Leyes"/> Sporting a 22:1 pressure ratio, which was a record for single-spool [[compressor]]s at the time, the GE27<ref name="Zoccoli1992"/> was GE's unsuccessful submission to power the [[Bell Boeing V-22 Osprey]]. The [[CFE CFE738]] is based on this engine. |
The GE27 was developed in the early 1980s under the "Modern Technology Demonstrator Engines" (MTDE) program sponsored by the [[United States Army]] [[Aviation Applied Technology Directorate]].<ref name="Leyes"/> Sporting a 22:1 pressure ratio, which was a record for single-spool [[compressor]]s at the time, the GE27<ref name="Zoccoli1992"/> was GE's unsuccessful submission to power the [[Bell Boeing V-22 Osprey]]. The [[CFE CFE738]] is based on this engine. |
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In the late 1980s, GE used the GE27 as the basis for its GE38 commercial engine development.<ref name="Leyes"/> The GE38 became the ''T407'' turboprop in partnership with [[Lycoming Engines]] for the [[Lockheed P-7]], with a maximum takeoff power of 6,000 shp (4,475 kW). The P-7 program was canceled in 1990 |
In the late 1980s, GE used the GE27 as the basis for its GE38 commercial engine development.<ref name="Leyes"/> The GE38 became the ''T407'' turboprop in partnership with [[Lycoming Engines]] for the [[Lockheed P-7]], with a maximum takeoff power of 6,000 shp (4,475 kW). The P-7 program was canceled in 1990. The commercial version of the T407 was the ''GLC38'' (General Electric/Lycoming Commercial 38), which was unsuccessfully offered for several turboprop airliners in the early 1990s. |
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The new ''T408'' (''GE38-1B'') is slated to power the new [[Sikorsky CH-53K King Stallion]] three-engined helicopter for the US Marine Corps. It has a power rating of 7,500 shp.<ref>[https://web.archive.org/web/20151224112343/http://www.geaviation.com/press/military/military_20070124.html "GE Launches New Engine Program for U.S. Marine Corps Heavy-lift Helicopter"]. GE Aviation, January 24, 2007.</ref> The GE38 completed its first round of ground testing in May 2010.<ref>[https://web.archive.org/web/20101211085533/http://geae.com/aboutgeae/presscenter/military/military_20100506.html "GE38 Completes First Engine to Test Program"]. GE Aviation, May 6, 2010.</ref> Two test engines have completed over 1,000 hours of ground testing by November 2011. Five test engines will be used in the 5,000-hour test program.<ref>[https://web.archive.org/web/20110808161113/http://www.geae.com/aboutgeae/presscenter/military/military_20110118.html "GE38 Looking to Take to the Sea"]. GE Aviation, January 18, 2011.</ref> GE also offered the engine to power the U.S. Navy's [[Ship-to-Shore Connector]] [[air-cushioned landing craft]]. |
The new ''T408'' (''GE38-1B'') is slated to power the new [[Sikorsky CH-53K King Stallion]] three-engined helicopter for the US Marine Corps. It has a power rating of 7,500 shp.<ref>[https://web.archive.org/web/20151224112343/http://www.geaviation.com/press/military/military_20070124.html "GE Launches New Engine Program for U.S. Marine Corps Heavy-lift Helicopter"]. GE Aviation, January 24, 2007.</ref> The GE38 completed its first round of ground testing in May 2010.<ref>[https://web.archive.org/web/20101211085533/http://geae.com/aboutgeae/presscenter/military/military_20100506.html "GE38 Completes First Engine to Test Program"]. GE Aviation, May 6, 2010.</ref> Two test engines have completed over 1,000 hours of ground testing by November 2011. Five test engines will be used in the 5,000-hour test program.<ref>[https://web.archive.org/web/20110808161113/http://www.geae.com/aboutgeae/presscenter/military/military_20110118.html "GE38 Looking to Take to the Sea"]. GE Aviation, January 18, 2011.</ref> GE also offered the engine to power the U.S. Navy's [[Ship-to-Shore Connector]] [[air-cushioned landing craft]]. |
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Revision as of 19:30, 14 October 2020
| GE38 / T408 | |
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| The T408 on a CH-53K King Stallion | |
| Typ | Turboshaft |
| National origin | Vereinigte Staaten |
| Manufacturer | GE Aviation |
| First run | 1980s |
| Major applications | Sikorsky CH-53K King Stallion (T408) |
| Developed into | CFE CFE738 |
The General Electric GE38 is a gas turbine developed by GE Aviation for turboprop and turboshaft applications. It powers the Sikorsky CH-53K King Stallion as the T408.[1]
Design and development
The GE27 was developed in the early 1980s under the "Modern Technology Demonstrator Engines" (MTDE) program sponsored by the United States Army Aviation Applied Technology Directorate.[2] Sporting a 22:1 pressure ratio, which was a record for single-spool compressors at the time, the GE27[3] was GE's unsuccessful submission to power the Bell Boeing V-22 Osprey. The CFE CFE738 is based on this engine.
In the late 1980s, GE used the GE27 as the basis for its GE38 commercial engine development.[2] The GE38 became the T407 turboprop in partnership with Lycoming Engines for the Lockheed P-7, with a maximum takeoff power of 6,000 shp (4,475 kW). The P-7 program was canceled in 1990. The commercial version of the T407 was the GLC38 (General Electric/Lycoming Commercial 38), which was unsuccessfully offered for several turboprop airliners in the early 1990s.
The new T408 (GE38-1B) is slated to power the new Sikorsky CH-53K King Stallion three-engined helicopter for the US Marine Corps. It has a power rating of 7,500 shp.[4] The GE38 completed its first round of ground testing in May 2010.[5] Two test engines have completed over 1,000 hours of ground testing by November 2011. Five test engines will be used in the 5,000-hour test program.[6] GE also offered the engine to power the U.S. Navy's Ship-to-Shore Connector air-cushioned landing craft.
Variants and applications
- T407
- T408 (GE38-1B)
- CPX38
- Proposed turboprop engine variant[8]
- GE38-B5 UDF
- A contra-rotating, ungeared, unducted fan (UDF) derivative with a bare engine weight (including the UDF) of 2,395 lb (1,086 kg), a UDF diameter of 83 in (2.1 m), and a blade count of 11 on one propeller and 9 on the other; provides a takeoff thrust of 9,644 lbf (4,374 kgf; 42.90 kN) with a thrust-specific fuel consumption (TSFC) of 0.240 lb/(lbf⋅h) (6.8 g/(kN⋅s)), and a cruise thrust of 2,190 lbf (990 kgf; 9.7 kN) with a TSFC of 0.519 lb/(lbf⋅h) (14.7 g/(kN⋅s)); proposed for the MPC 75 German-Chinese regional airliner in the late 1980s[9]
Specifications (T408)
 |
This aircraft engine article is missing some (or all) of its specifications. If you have a source, you can help Wikipedia by adding them. |
Data from GE Aviation[10]
General characteristics
- Type: Turboprop / Turboshaft
- Length: 57.5 inches (1.46 m) (79.5 in with Torque Tube[citation needed])
- Diameter: 27 inches (0.69 m)
- Dry weight: 1,104.7 pounds (501.1 kg)
Components
- Compressor: 5+1 Axi-Centrifugal Compressor (5 Axial stages and 1 Centrifugal stage)
- Turbine: a 3-Stage Power Turbine, a 2-Stage-Single Crystal Cooled HP Turbine
- Oil system: synthetic
Performance
- Maximum power output: 7,500 shaft horsepower (5,600 kW)
- Overall pressure ratio: 18.6:1 OPR
- Power-to-weight ratio: 6.8 shp/lb (11.2 kW/kg)
See also
Related development
Comparable engines
Related lists
References
- ^ Sikorsky Unveils CH-53K Helicopter; U.S. Marine Corps Reveals Aircraft Name
- ^ a b Leyes II, Richard A.; Fleming, William A. (1999). The History of North American Small Gas Turbine Aircraft Engines. Washington, DC: Smithsonian Institution. pp. 365–372. ISBN 1-56347-332-1.
- ^ Zoccoli, Michael J.; Rusterholz, Kenneth P. (June 1–4, 1992). An update on the development of the T407/GLC38 modern technology gas turbine engine (PDF). International Gas Turbine and Aeroengine Congress and Exposition. Cologne, Germany: American Society of Mechanical Engineers (ASME). doi:10.1115/92-GT-147. OCLC 8518815331.
- ^ "GE Launches New Engine Program for U.S. Marine Corps Heavy-lift Helicopter". GE Aviation, January 24, 2007.
- ^ "GE38 Completes First Engine to Test Program". GE Aviation, May 6, 2010.
- ^ "GE38 Looking to Take to the Sea". GE Aviation, January 18, 2011.
- ^ Garrett (14 July 2020). "CH-47 Chinook flight tests with more powerful GE T408 engine could begin within weeks". FlightGlobal. Retrieved 5 August 2020.
- ^ RAA 2011: GE cites ‘strong interest’ in CPX38 turboprop engine
- ^ MBB CATIC Association (July 1987). MPC 75 feasibility study - Summary report: B1 - Project definition (PDF) (Report). pp. B1–2, B1–13, B1–23, B1–25, B1–30 to B1–32, B1–37, B1–45 to B1–46, Appendix B1-4.1 pages 20 to 31.
- ^ Model GE38 Archived 2009-02-08 at the Wayback Machine. GE Aviation. Retrieved: 19 October 2010.
Bibliography
- Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. p. 79. ISBN 0-7509-4479-X.
- Johnson, Edward T.; Lindsay, Howard (June 11–14, 1990). Advanced technology programs for small turboshaft engines: Past, present, future (PDF). Gas Turbine and Aeroengine Congress and Exposition. Brussels, Belgium: American Society of Mechanical Engineers (ASME). doi:10.1115/90-GT-267. OCLC 8518938641.
- Zoccoli, Michael J.; Klassen, David D. (June 11–14, 1990). T407/GLC38: 'A modern technology powerplant' (PDF). Gas Turbine and Aeroengine Congress and Exposition. Brussels, Belgium: American Society of Mechanical Engineers (ASME). doi:10.1115/90-GT-242. OCLC 7344745132.