ACAE CJ-1000A

The AECC CJ-1000A (Chang Jiang-1000A/长江-1000A) is a high-bypass turbofan jet engine in development.

CJ-1000A
Type High-bypass turbofan
National origin People's Republic of China
Manufacturer AECC Commercial Aircraft Engines (ACAE) Shanghai
First run May 2018[1]
Major applications Comac C919

Design

The CJ-1000A is developed for the Comac C919 narrow-body airliner with a thrust of 98–196 kN; 22,000–44,000 lbf.[2]

It has a diameter of 1.95 m (6 ft 5 in) and a length of 3.29 m (10.8 ft), to be compared with the CFM LEAP-1C 1.98 m (6 ft 6 in) diameter and 3.32 m (10.9 ft) length. It uses a similar two-spool configuration, with a one-stage fan, three-stage booster, 10-stage high-pressure compressor, two-stage high-pressure turbine and six-stage low pressure turbine, compared to the Leap-1C seven LP stages. Its 18 wide-chord fan blades are made in hollow titanium like those of Rolls-Royce Plc., and its single annular combustor have 3D printed fuel nozzles.[3]

Development

A model of the CJ-1000Al was exhibited at the AVIC booth of the September 2011 Beijing Air Show, and was expected to be completed in 2016.[4] At the time, entry into service was targeted for 2020 and a possible cooperation with MTU Aero Engines was studied.[5] In 2013, Avic Engine subsidiary Shenyang Engine Design and Research Institute proposed its 28,700 lbf (128 kN) WS-20 (SF-A) (designed for the Y-20 military airlifter), which was still being developed, to power the C919 instead of the CJ-1000A (SF-B) which used older technology closer to the CFM56 than to the Leap.[6] The suggestion was rejected later by Comac. Assembly of the first CJ-1000AX engine was completed in December 2017 after an 18-month process. 24 more engines will support an airworthiness certification program and it should enter service after 2021.[3] In May 2018, the first engine ran in a Shanghai test cell reaching a core speed of 6,600 rpm.[1]

By May 2018, AECC intended to certify its CJ-1000 in 2027 and introduce it in 2030, eight years behind the original schedule. The CJ-1000A would need 28,200 lbf (125 kN) thrust to replace the CFM LEAP. The 29,500 lbf (131 kN) CJ-1000B would power an extended-range C919 variant.[7]

CJ-2000

The CJ-1000 HP spool and combustor core, with 10 compressor stages and two turbine stages, will be scaled up for the 78,000 lbf (350 kN) CJ-2000 for a 2023 demonstration. It will need a new low-pressure spool with a four-stage LP compressor booster up from three, and seven LP turbine stages up from six, the GEnx-1B stage count while the UEC PD-35 has nine HP compressor stages. With composite fan blades and fan case, it would power the CRAIC CR929 after 2030 with an over 10 bypass ratio and a 50.3 OPR in climb, and targets a TSFC of 0.53–0.525 lb/lbf/h (15.0–14.9 g/kN/s) is aimed for by CRAIC.[7]

CJ-500

The CJ-500 would offer 18,000 to 22,000 lbf (80 to 98 kN) for the ARJ21.[7]

Applications

Specifications

Data from Flight[3]

General characteristics

  • Type: two-spool high-bypass turbofan
  • Length: 3.29m (10.7ft)
  • Diameter: 1.95m (76.8in)
  • Dry weight:

Components

  • Compressor: one-stage fan (18 hollow-titanium, wide-chord blades), three-stage booster, 10-stage HP
  • Combustors: single-annular combustor, 3D printed fuel nozzles
  • Turbine: two-stage HP, six-stage LP

Performance

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See also

Related development

Comparable engines

Related lists

References
  1. Mavis Toh (18 May 2018). "C919's local engine alternative powered up". flightglobal.
  2. "国产大飞机发动机"长江"CJ-1000A首次亮相". CARNOC (in Chinese). 21 September 2011.
  3. Stephen Trimble (29 Dec 2017). "China completes assembly of first high-bypass turbofan engine". Flightglobal.
  4. "国产大飞机发动机CJ-1000A模型亮相" (in Chinese). Ministry of Industry and Information Technology. 21 Sep 2011.
  5. Michael Gubisch (21 Sep 2011). "MTU to work with AVIC on possible alternative engine for C919". Flightglobal.
  6. Bradley Perret (Nov 7, 2013). "Avic Engine Pushes Alternative To ACAE CJ-1000 Turbofan For C919". Aviation Week Network.
  7. Bradley Perrett (Jun 1, 2018). "China Moving Ahead With Widebody Engine". Aviation Week & Space Technology.
  8. Joseph E. Fritz (December 6, 2012). "Global Commercial Aero Turbofan Engine Market, Supply Chain and Opportunities: 2012 - 2017" (PDF). Lucintel. p. 18.
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