Английская Википедия:General Electric GE38
Шаблон:Infobox aircraft engine
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 tiltrotor aircraft. The GE27 also had a compressor air flow of Шаблон:Convert and a turbine temperature of Шаблон:Convert.[2] The GE27 first ran in late 1984, but it unexpectedly lost the V-22 engine competition to the Allison 501-M80C, which was not a participant in the MTDE program.[4]
In the late 1980s, GE used the GE27 as the basis for the commercial development of turboshafts, turboprops, turbofans, and propfans under the GE38 name. GE formed a 50/50 venture with Garrett (then a division of AlliedSignal) to develop the turbofan variant[5] called the CFE (Commercial Fan Engines) CFE738, which used the GE27's gas generator core.[2] One of a range of advertised GE38 unducted fan (UDF) sizes,[5] the Шаблон:Cvt takeoff thrust GE38-B5 was for a time the baseline engine for the West German-Chinese MPC-75 regional airliner.[6] The GE38 became the T407 military turboprop in partnership with Lycoming Engines for the Lockheed P-7A, with a maximum takeoff power of 6,000 shp (4,475 kW). First run on December 26, 1989,[7] the T407 engine was scheduled to undergo flight testing on a Lockheed P-3 Orion testbed aircraft in the summer of 1990,[8] but the US Navy canceled Lockheed's P-7 contract on July 20, 1990.[9] The commercial version of the T407 was the GLC38 (General Electric/Lycoming Commercial 38), which was unsuccessfully offered for several turboprop airliners in the late 1980s and early 1990s.[2]
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.[10] The GE38 completed its first round of ground testing in May 2010.[11] 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.[12] In September 2019, GE delivered the first production T408 engine to the U.S. Naval Air Systems Command (NAVAIR) for the CH-53K.[13] GE also offered the engine to power the U.S. Navy's Ship-to-Shore Connector air-cushioned landing craft.
The T408 was also tested by the U.S. Army and Boeing as an alternative powerplant on an NCH-47D Chinook testbed helicopter. The helicopter configuration was ground tested beginning in late 2019, followed by an initial flight on September 22, 2020.[14] Conclusion of the test trials was announced on May 12, 2021.[15]
Variants
- T407-GE-400
- T408-GE-400 (GE38-1B)
- Boeing NCH-47D Chinook (flying testbed)[16]
- Sikorsky CH-53K King Stallion
- CFE CFE738
- Turbofan variant of the T407-GE-400, used on the Dassault Falcon
- CPX38
- Proposed turboprop engine variant of the GE38-1B[17]
- GE38-3
- An Шаблон:Cvt class derivative engine under consideration by the U.S. military in 2006[18]
- GE38-B5
- A contra-rotating, ungeared, unducted fan (UDF) derivative with a bare engine weight (including the UDF) of Шаблон:Cvt, a UDF diameter of Шаблон:Convert, and a blade count of 11 on one propeller and 9 on the other; provides a takeoff thrust of Шаблон:Cvt with a thrust-specific fuel consumption (TSFC) of Шаблон:Cvt, and a cruise thrust of Шаблон:Cvt with a TSFC of Шаблон:Cvt; proposed for the MPC 75 German-Chinese regional airliner in the late 1980s[6]
- GLC38
- Proposed turboprop variant of the T407-GE-400
Applications
- Boeing NCH-47D Chinook (flying testbed)
- Sikorsky CH-53K King Stallion
Specifications (T408)
See also
Шаблон:Portal Шаблон:Aircontent
References
Bibliography
- Шаблон:Cite magazine
- Шаблон:Cite report
- Шаблон:Cite magazine
- Шаблон:Cite news
- Шаблон:Cite book
- Шаблон:Cite conference
External links
Шаблон:GE aeroengines Шаблон:USAF gas turbine engines
- ↑ Sikorsky Unveils CH-53K Helicopter; U.S. Marine Corps Reveals Aircraft Name
- ↑ 2,0 2,1 2,2 2,3 Ошибка цитирования Неверный тег
<ref>; для сносокLeyesне указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокZoccoli1992не указан текст - ↑ Шаблон:Cite magazine
- ↑ 5,0 5,1 Шаблон:Cite magazine
- ↑ 6,0 6,1 Шаблон:Cite report
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокZoccoliKlassen1990не указан текст - ↑ Шаблон:Cite magazine
- ↑ Шаблон:Cite news
- ↑ "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.
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокDailyItem20191025не указан текст - ↑ Шаблон:Cite news
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite report
