Chinese Engine Development

kurutoga

Junior Member
Registered Member
Exactly. Two groups of engineers competing for the same pot. I just feel, from parent AVIC bean counter's point of view, only one will eventually win and I think the 'natural' winner is CJ-1000A. Not a huge loss for XAC as they have the WS-20 program and not much effort is wasted. Just rename AEF-1300 as WS-20B (that may already be the case so just no extra pocket money to build another XAEC hotel in Shenyang).

If that picture of CJ-1000A on a Y-20 is real, I am guessing AECC poured enough resources into CJ-1000A and it caught up or ahead of the AEF-1300 development which is excellent news for all. Has there ever been a picture of a working AEF-1300. CAAC is very protective of its reputation and is very strict. ARJ-21 (EASA only) and MA-60 (neither EASA nor FAA) had similar issues with CAAC. C919 is the first with all paperwork done properly.

I remember when AECC was first created, Aviation Week magazine had an article comparing the number of engineers at GE/RR vs AECC and commented that it was a good start but China still wasn't putting nearly enough money into engine development to be competitive. I don't remember the numbers but the gap was huge (1/5?). AECC does sounds much more confident these days.

CJ-1000A has blades, compressor, and other major parts from foreign sources, mostly European. It is not suitable for military use.

On the other hand, the two projects have different goals, therefore will have different priorities, resulting in different designs.
 

sunnymaxi

Major
Registered Member
CJ-1000A has blades, compressor, and other major parts from foreign sources, mostly European. It is not suitable for military use.
nope. this is the biggest misconception regarding CJ-1000 engine components. parts from MTU/RR/Avio are nothing but just a false information. initially COMAC were planning to do this. but plan didn't go through.

i have cleared many times.

all major components are Chinese made. i promised myself that, i shall not disclose the supplier names coz of sensitivity. but this Chinese firm is well-known so i m posting this.

Wuxi Turbine have design the high and low-pressure compressor blades of CJ-1000/CJ-2000.

Wuxi have developed compressor blades of LEAP series (this engine is dominant in 150-seat single-aisle airliners such as A320, Boeing 737 and C919), CFM56 series, CF34, CF6, PP20, LMS100 and LM9000 for Safran and GM, covering more than 50 stages of blades. As of the end of 2020, they have delivered more than one million compressor blades to Safran and GE. 2/3 of entire LEAP engines low pressure compressor blades made by Wuxi.

my old post

nope.

this is the biggest misconception regarding CJ-1000A components. this news appeared in 2011-12, they were planning to collaborate with western firms for core components but project didn't materialized. i tell you the history and you will understand.

CJ-1000 name appeared = 2009

CJ-1000 team planning to collaborate with western firms for components = 2011-12

but deal didn't go through. after 4 years of planning and research, COMAC found AECC in 2016 and engine project officially approved in 2017. core machine ignited and first porotype appeared in 2018. all major components produced by Chinese firms/institutes.

the time period between 2012-2018 was basically for time given to major Chinese suppliers. compressor , combustion chamber , turbine each and every major component produced in mainland by Chinese origin firms and some universities involved too

46 major suppliers are involved in CJ-1000 engine and all are based in mainland. same suppliers are providing the parts to CJ-2000 engine.

i know the name of each and every firm/institute and even the names of team leader LOOL. but can't post the details. sorry
 

ACuriousPLAFan

Brigadier
Registered Member
CJ1000A carried on the Y-20 transport plane for flight test. But not sure if the picture is real.

View attachment 105475

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The illustration is CGI, but apparently the message is real.

According to this guy, the CJ1000A engine completed its first flight inspection test on January 6, 2023, and the engine mounting test was completed on the 9th. Looks like CJ1000A is getting ever closer to C919...


Verfication and confirmation needed.
 

Red tsunami

Junior Member
Registered Member
The illustration is CGI, but apparently the message is real.

According to this guy, the CJ1000A engine completed its first flight inspection test on January 6, 2023, and the engine mounting test was completed on the 9th. Looks like CJ1000A is getting ever closer to C919...


Verfication and confirmation needed.

I think the source is this:

航空工业试飞中心航空发动机通用飞行台完成首次检飞​

中国航空报讯:经过半年多的努力,航空工业试飞中心航空发动机通用飞行台于2023年1月6日完成首次检飞,9日完成发动机挂装试验,迈出了航空发动机通用飞行台建设关键一步,标志着我国初步具备自主研发航空发动机通用飞行台的能力。

近日,中知(北京)认证有限公司认证专家对中航光电知识产权管理体系实施、运行情况开展了为期4天的现场审核,标志着公司知识产权管理更加规范化、制度化和体系化,知识产权创造、运用、保护、管理能力和水平迈上新台阶,进一步强化了知识产权在科技创新活动中的引领和支撑作用。中航光电将以此为契机,不断完善知识产权管理体系,强化知识产权保护意识,发挥知识产权对构建新时代航空强国“引领创新力”的支撑作用,为公司持续高质量的稳定发展提供有力保障。

The first flight inspection was completed by the general aviation engine flight platform of the aviation industry flight test center

China Aviation News: After more than half a year's efforts, the aero-engine general flight platform of the Aviation Industry Flight Test Center completed its first inspection flight on January 6, 2023, and the engine mounting test was completed on January 9, 2023, which took a key step in the construction of the aero-engine general flight platform, marking China's initial ability to independently develop the aero-engine general flight platform.

Recently, the certification experts of Zhongzhi (Beijing) Certification Co., Ltd. carried out a four-day on-site audit on the implementation and operation of the intellectual property management system of AVIC Optoelectronics, marking that the company's intellectual property management has become more standardized, institutionalized and systematized, and the ability and level of intellectual property creation, operation, protection, management have reached a new level, further strengthening the leading and supporting role of intellectual property in scientific and technological innovation activities. AVIC Optoelectronics will take this opportunity to continuously improve the intellectual property management system, strengthen the awareness of intellectual property protection, and give play to the supporting role of intellectual property rights in building a new era of aviation power "leading innovation", so as to provide a strong guarantee for the company's sustained high-quality and stable development.

FH26RDIFRF0ID{P99H9V0YK.png

IMO this is the engine flight test bed based on Y-20.
 

BoraTas

Captain
Registered Member

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
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49eca83dgy1hacav9q2qlj20m80lwwwq.jpg
Base, standard to improved version, Tailing engine continues to improvement in capability, maintainability, safety. Endurance, environmental stability, power consumption and TVC Improvement (????) have all completed.

This is from 中国航发
 

taxiya

Brigadier
Registered Member
View attachment 105650
Base, standard to improved version, Tailing engine continues to improvement in capability, maintainability, safety. Endurance, environmental stability, power consumption and TVC Improvement (????) have all completed.

This is from 中国航发
The word improvement is referring to the whole WS-10 family from the baseline, not specifically to TVC. TVC itself is one of the improvements.

The sentence should have been read as "WS-10 has realized technical improvements in areas such as performance, reliability, safety, working profile, power extraction???, environmental adaptability, endurance and TVC".
1674404073449.png
 
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