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General Electric CF34
送交者: oldfarmer 2021月03月15日00:34:08 于 [世界军事论坛] 发送悄悄话
回  答: ARJ21升级建议:替代CF34-10A一种更高效,更安静,低维护性的喷气发动机 oldfarmer 于 2021-03-15 00:25:11

General Electric CF34

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CF34
Canadair CL-600-2B19 Regional Jet CRJ-200LR, UTair Aviation AN2213397.jpg
A CF34 installed on a Bombardier CRJ200
TypeTurbofan
National originUnited States
ManufacturerGeneral Electric
First run1982[1]
Major applicationsBombardier Challenger 601/604/605
Bombardier Challenger 850
Bombardier CRJ
Comac ARJ21
Embraer E-Jets
Developed fromGeneral Electric TF34

CF34 engine mounted on an Embraer E-190Recent 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 the Chinese ARJ21.[2][3] In 2012, there were 5,600 engines in service.

Contents

Design and development[edit]

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 -10A and -10E, were derived from the CFM56 engine family,[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 82 kilonewtons (18,500 lbf) for the -10E 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.[4] In 1995, GE invested $200 million to develop the -8C derivative for the CRJ700.[5]

GE has proposed updating the Boeing B-52 Stratofortress with CF34-10 engines.[6]

Applications[edit]

  • CF34-1A

  • CF34-3A

  • CF34-3A1

  • CF34-3A2

  • CF34-3B

  • CF34-3B1

  • CF34-8C1

  • CF34-8C5

  • CF34-8C5A1

  • CF34-8C5A2

  • CF34-8C5B1

  • CF34-8E

  • CF34-10A

  • CF34-10E

Specifications[edit]

CF34 Engine Comparison[7]

CF34-3[8]CF34-8C[9]CF34-8E[10]CF34-10A[11]CF34-10E[12]
ApplicationCL600/CL850
CRJ200
Bombardier CRJ700/900/1000E-170/175Comac ARJ21E-190/195
Lineage 1000
Length103 in (2.6 m)128 in (3.3 m)121 in (3.1 m)90 in (2.3 m)145 in (3.7 m)
Diameter49 in (1.2 m)52 in (1.3 m)53 in (1.3 m)57 in (1.4 m)57 in (1.4 m)
Dry weight1,670 lb (760 kg)2,400–2,450 lb (1,090–1,110 kg)2,600 lb (1,200 kg)3,700 lb (1,700 kg)3,700 lb (1,700 kg)
Compressor1 44 in (110 cm) fan
14 HP stages, 14:1
1 46.2 in (117 cm) fan
10 HP stages
1 53 in (130 cm) fan
+ 3 LP stages
9 HP stages
Turbine4 LP stages
2 HP stages
4 LP stages
1 HP stage
Thrust
at sea level
9,220 lbf (41.0 kN)13,790–14,500 lbf (61.3–64.5 kN)14,500 lbf (64 kN)17,640 lbf (78.5 kN)20,360 lbf (90.6 kN)
Thrust-to-weight ratio5.52:15.7-6:15.6:15.1:15.2:1
Overall pressure ratio
at max. power
21:128-28.5:128.5:129:1
Bypass ratio6.2:15:15.4:1
Cruise SFC0.69 lb/lbf/h (20 g/kN/s)0.67–0.68 lb/lbf/h (19–19 g/kN/s)0.68 lb/lbf/h (19 g/kN/s)0.65 lb/lbf/h (18 g/kN/s)0.64 lb/lbf/h (18 g/kN/s)

See also[edit]

Related development

Comparable engines

Related lists

References[edit]

  1. ^ GE Aviation at flightglobal.com

  2. ^ The CF34 at aviationpros.com

  3. ^ GE's CF34-3 Engines Celebrate 20 Years of Regional Jet Service at aviationpros.com

  4. ^ "E190 Values Start to Take Note of E2". Aircraft Value News. October 29, 2018.

  5. ^ David Hughes (Feb 13, 1995). "CF34-8C to power new regional jet"Aviation Week.

  6. ^ ((cite website |url=https://www.geaviation.com/military/engines/b-52%7Cretreived= Jun 25,2020}}

  7. ^ "The CF34 Engine". GE Aviation.

  8. ^ "CF34-3 turbofan engine" (PDF). GE Aviation.

  9. ^ "CF34-8C turbofan engine" (PDF). GE Aviation.

  10. ^ "CF34-8E turbofan engine" (PDF). GE Aviation.

  11. ^ "CF34-10A turbofan engine" (PDF). GE Aviation.

  12. ^ "CF34-10E turbofan engine" (PDF). GE Aviation.

External links[edit]


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