Английская Википедия:General Electric CF34

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Шаблон:Short description Шаблон:More citations needed

Шаблон:Infobox Aircraft Engine
Файл:E-190 az motore.JPG
CF34 engine mounted on an Embraer 190
Файл:KLC E-190 PH-EXA 25sep14 LFBO-3.jpg
Recent versions of the CF34 feature chevrons on the core nozzle outlet.

The General Electric CF34 is a civilian high-bypass turbofan developed by GE Aircraft Engines from its TF34 military engine. The CF34 is used on a number of business and regional jets, including the Bombardier CRJ series, the Embraer E-Jets, and Comac ARJ21.[1][2] In 2012, there were 5,600 engines in service.

Design and development

The original engine contained a single stage fan driven by a 4-stage low pressure (LP) turbine, supercharging a 14-stage HP compressor driven by a 2-stage high pressure (HP) turbine, with an annular combustor. Later higher thrust versions of the CF34 feature an advanced technology core, with only 10 HP compressor stages. Latest variants, the Шаблон:Nowrap and Шаблон:Nowrap, were derived from the CFM56 engine family,Шаблон:Citation needed and have a radically different HP spool, containing a 9-stage compressor driven by a single stage turbine. The LP spool has 3 core booster stages behind the fan. Static thrust is Шаблон:Convert for the Шаблон:Nowrap variant.

On wing times can reach 14,000 hours, an overhaul costs over $1.5 million and a set of LLPs $2.1 million for a 25,000 cycle life.[3] In 1995, GE invested $200 million to develop the -8C derivative for the CRJ700.[4]

GE had proposed updating the Boeing B-52 Stratofortress with CF34-10 engines, [5] but the Rolls-Royce F130 was selected in September 2021[6] instead.

Applications

CF34-1A
CF34-3A
CF34-3A1
CF34-3A2
CF34-3B
CF34-3B1
CF34-3B
CF34-8C1
CF34-8C5
CF34-8C5A1
CF34-8C5A2
CF34-8C5B1
CF34-8E
CF34-10A
CF34-10E

Specifications

CF34 Engine Comparison[7]
CF34-3[8] CF34-8C[9] CF34-8E[10] CF34-10A[11] CF34-10E[12]
Application CL600/CRJ200 CRJ700/900/1000 E170/175 ARJ21 E190/195
Length Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert
Diameter Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert
Dry weight Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert
Fan Шаблон:Convert Шаблон:Convert Шаблон:Convert
Compressor 14 Шаблон:Abbr stages, 14:1 10 HP stages 3 Шаблон:Abbr + 9 Шаблон:Abbr stages
Turbine 4 Шаблон:Abbr + 2 Шаблон:Abbr stages 4 LP + 1 HP stage
Thrust (SL) Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert
Thrust/weight 5.52:1 5.7-6:1 5.6:1 5.1:1 5.2:1
OPR (max. power) 21:1 28-28.5:1 28.5:1 29:1
Bypass ratio 6.2:1 5:1 5.4:1
SFC (Cruise) Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert Шаблон:Convert

See also

Шаблон:Aircontent

References

Шаблон:Reflist

External links

Шаблон:Commons category

Шаблон:GE aeroengines Шаблон:USAF gas turbine engines

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ The CF34 at aviationpros.com
  2. ↑ GE's CF34-3 Engines Celebrate 20 Years of Regional Jet Service at aviationpros.com
  3. ↑ Шаблон:Cite news
  4. ↑ Шаблон:Cite magazine
  5. ↑ Шаблон:Cite web
  6. ↑ Шаблон:Cite web
  7. ↑ Шаблон:Cite web
  8. ↑ Шаблон:Cite web
  9. ↑ Шаблон:Cite web
  10. ↑ Шаблон:Cite web
  11. ↑ Шаблон:Cite web
  12. ↑ Шаблон:Cite web
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