Chinese Engine Development

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taxiya

Brigadier
Registered Member
latenlazy said:
View attachment 77540

I think those are actually two different blades. Those blades look all metallic to me...
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by78 said:
We'll hopefully soon find out if the speculations of carbon fiber blades are true.
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A financial market assessment of AVIC subsidary specializing in composite material. The highlighted texts says that CJ-100A and CJ-2000 are all using composite fan blade. CJ-2000 is said also using composite casing.1650238277650.png7
AECC promotion video at 00:56
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1650238542316.png
 
O

ougoah

Brigadier
Registered Member
gelgoog said:
I could have sworn I read somewhere about CJ-1000A using Hollow Titanium fan blades though?
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I think this was the case years ago. They've constantly been applying the latest tech every step. I don't think the CJ-1000 project started to even apply hollow titanium fan blades but iterated everytime newer tech becomes available and mastered.
 
Godzilla

Godzilla

Junior Member
Registered Member
ougoah said:
I think this was the case years ago. They've constantly been applying the latest tech every step. I don't think the CJ-1000 project started to even apply hollow titanium fan blades but iterated everytime newer tech becomes available and mastered.
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That promo video looks definitely like composite fibre fan blade with titanium leading edge.
 
G

gelgoog

Lieutenant General
Registered Member
No. That is probably a composite blade with some kind of metal laminate on top on the edges.
But that looks like a computer generated image.
 
T

taxiya

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ACAE reward Oct 2021 reward to composite fabrication method research program.

10月25日，第三届中央企业熠星创新创意大赛总结颁奖活动在京举行。中国航发商发“自动铺丝工艺制造复合材料风扇叶片”项目荣获二等奖，并作为航空领域的优秀项目参加了成果展。

项目中自动化层间增韧系统创意来源于关键技术攻关项目，目前已成功研制出第一代可用的设备系统；复杂型面缺陷高精度检测3D成像系统已示范性解决了褶皱和弱胶接这一工业界公认的缺陷检测难题，并实现了榫头超大厚度变曲率检测盲区的100%超声信号全覆盖，该研究获得了2021年重点项目进一步的支持；软件系统中的交织铺层、褶皱和丢层细观建模分析技术已在型号的复合材料风扇叶片的缺陷影响和容差设计上发挥了作用。

This program is inspired by the key tech program (ongoing). This program has successfully build equipment that can be put in production system.

Many results from this program has been used in "tolerance design" and "defect effect???" of the composite fan blade of type engine.

It is certain that the key tech program and type engine is one of or both of the CJ-1000A and CJ-2000 engines. When the word "type" is used, things are very certain.

Another related patent by Northwestern Polytechnical University which is a heavy weight in the field. It is about manufacturing method of titanium laminating composite fan blade specially related to a type of engine.

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航空发动机复合材料风扇叶片的钛合金包覆边制造方法
技术领域
[0001] 本发明涉及一种风扇叶片的包覆边制造方法，特别涉及一种航空发动机复合材料 风扇叶片的钛合金包覆边制造方法。

It may be so that these engines were initially designed to use hollow titanium fan blade a decade ago, but the final production type is composite fan blade.
 
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