“ACAE CJ-1000A”的意思、由来-开放百科全书

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

Design

The CJ-1000A is developed for the Comac C919 narrow-body airliner with a thrust of {{cvt|10000-20000|kgf|kN lbf|disp=out}}.^[1]

It has a diameter of 1.95m (76.8in) and a length of 3.29m (10.7ft), to be compared with the CFM LEAP-1C {{cvt|1.98|m}} diameter and {{cvt|3.32|m}} 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 {{abbr|LP|low pressure}} 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 CJ-1000A model was exhibited at the AVIC booth of the September 2011 Beijing Air Show, and was expected to be completed in 2016.^[2]

At the time, entry into service was targeted for 2020 and a possible cooperation with MTU Aero Engines was studied.^[3]

In 2013, Avic Engine subsidiary Shenyang Engine Design and Research Institute pushed its under development {{cvt|28,700|lbf|kN}} WS-20 (SF-A) (designed for the Y-20 military airlifter) to power the C919 instead of the CJ-1000A (SF-B), a technically conservative turbofan closer to the CFM56 than to the Leap.^[4] The suggestion was rejected later by Comac.

To validate its technologies, the first CJ-1000AX demonstrator assembly was completed in December 2017 after an 18-month process, 24 more prototypes will support an airworthiness certification campaign and it should enter service after 2021.^[5]

In May 2018, the first demonstrator was powered on in a Shanghai test cell and its core reached 6,600 rpm after overcoming connections and debugging issues, completed on 30 March; its components and systems functionality verified, its complete performance will be determined by further tests.^[6]

By May 2018, AECC aimed to certify its CJ-1000 in 2027 and introduce it in 2030, eight years behind the original schedule.
|ref=Flight^[5]
|type= two-spool high-bypass turbofan
|length= 3.29m (10.7ft)
|diameter= 1.95m (76.8in)
|weight=
|compressor= one-stage fan (18 hollow-titanium, wide-chord blades), three-stage booster, 10-stage {{abbr|HP|high-pressure}}
|combustion= single-annular combustor, 3D printed fuel nozzles
|turbine= two-stage {{abbr|HP|high-pressure}}, six-stage {{abbr|LP|low-pressure}}
|fueltype=
|oilsystem=
|power=
|thrust= {{cvt|25,000|lbf|kN|0}} CJ-1000AX demonstrator, {{cvt|28,200|lbf|kN|0}} CJ-1000A, {{cvt|29,500|lbf|kN|0}} CJ-1000B^[7]
|compression= ~40 ({{abbr|HP|high-pressure}} compressor ~20)^[15]
|bypass= >9^[8]
|aircon=
|turbinetemp=
|fuelcon=
|specfuelcon= ~{{cvt|0.52|lb/lbf/h|g/kN/s}}^[8]
|power/weight=
|thrust/weight=
}}

See also

References

1. ^{{cite news |url= http://news.carnoc.com/list/201/201243.html |title= 国产大飞机发动机“长江”CJ-1000A首次亮相 |date=21 September 2011 |website= CARNOC |language= Chinese }}
2. ^{{cite news |url= http://www.miit.gov.cn/n1146290/n1146397/c4244228/content.html |title= 国产大飞机发动机CJ-1000A模型亮相 |date= 21 Sep 2011 |publisher= Ministry of Industry and Information Technology |language= Chinese}}
3. ^{{cite news |url= https://www.flightglobal.com/news/articles/mtu-to-work-with-avic-on-possible-alternative-engine-for-c919-362359/ |title= MTU to work with AVIC on possible alternative engine for C919 |date= 21 Sep 2011 |author= Michael Gubisch |work= Flightglobal}}
4. ^{{cite news |url= http://aviationweek.com/defense/avic-engine-pushes-alternative-acae-cj-1000-turbofan-c919 |title= Avic Engine Pushes Alternative To ACAE CJ-1000 Turbofan For C919 |date= Nov 7, 2013 |author= Bradley Perret |work= Aviation Week Network}}
5. ^¹²³⁴{{cite news |url= https://www.flightglobal.com/news/articles/china-completes-assembly-of-first-high-bypass-turbof-444526/ |title= China completes assembly of first high-bypass turbofan engine |date= 29 Dec 2017 |author= Stephen Trimble |work= Flightglobal}}
6. ^¹{{cite news |url= https://www.flightglobal.com/news/articles/c919s-local-engine-alternative-powered-up-448721/ |title= C919's local engine alternative powered up |date= 18 May 2018 |author= Mavis Toh |work= flightglobal}}
7. ^¹²-->The CJ-1000A have to match the CFM LEAP for a {{cvt|28,200|lbf|kN}} thrust, while the {{cvt|29,500|lbf|kN}} CJ-1000B would power an extended-range C919 variant.===CJ-2000===The CJ-1000 {{abbr|HP|high-pressure}} spool and combustor core, with 10 compressor stages and two turbine stages, will be scaled up for the {{cvt|78,000|lbf|kN}} CJ-2000 for a 2023 demonstration.It will need a new low-pressure spool with a four-stage {{abbr|LP|low-pressure}} 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 {{cvt|0.53|-|0.525|lb/lbf/h|g/kN/s}} is aimed for by CRAIC.{{cite news |url= http://aviationweek.com/propulsion/china-moving-ahead-widebody-engine |title= China Moving Ahead With Widebody Engine |date= Jun 1, 2018 |author= Bradley Perrett |work= Aviation Week & Space Technology}}
8. ^¹²{{cite web |url= http://lucintel.com/Webinar-Dec-06-2012-Turbo-Fan-Aero-Engine-Market-Brief.pdf |title= Global Commercial Aero Turbofan Engine Market, Supply Chain and Opportunities: 2012 - 2017 |publisher= Lucintel |date= December 6, 2012 |author= Joseph E. Fritz |page= 18}}