Chinese Engine Development

[Tomboy]

Excerpts from academic papers on pusher propfan and contra-rotating propeller simulation models. Posted by SOYO on Weibo.

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Some more info on this paper

Core flow of 50kg/s and designed cruise speed of Mach 0.785 at 35000ft

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from a paper associated with AECC Commercial Engines, some kind of propfan with stator vanes in the works similar to CFM RISE.

 

[ACuriousPLAFan]

An unknown turboprop engine on a test stand. Some claimed that it is the WJ-6F/J(?) used on the KJ-600. Posted by SOYO on Weibo.

 

[The Observer]

An unknown turboprop engine on a test stand. Some claimed that it is the WJ-6F/J(?) used on the KJ-600. Posted by SOYO on Weibo.

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Yeah, the engine nacelle cap design has a gap to the propeller shaft, which lines up with WJ-6F/J(?) intake design.

 

[ACuriousPLAFan]

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AECC Propfan, probably from Zhuzhou

Larger photo of said contra-rotating propfan engine display model. Posted by @太湖军I名 on Weibo.

 

[AsuraGodFiend]

Does anyone knows the general estimated lifespan of ws15 and 19 and Ws10c and C2 all I hear about is estimated thrust nothing about lifespan I expect ws15,ws19 and C2 to match western counter parts in 2025 with all the 3d tech and material science and experience gained through the years

 

[Nx4eu]

Does anyone knows the general estimated lifespan of ws15 and 19 and Ws10c and C2 all I hear about is estimated thrust nothing about lifespan I expect ws15,ws19 and C2 to match western counter parts in 2025 with all the 3d tech and material science and experience gained through the years

I am just some guy, so don't go on twitter blabbering about WS-19 lifetime or telling people this is a fact. But a few weeks ago I made a conservative/realistic estimate on where reliability may land on SPF. I would like this kind of thing to stay on SDF. But I know some annoying lurkers may try and take my amateur analysis as fact.


WS-19 or the engine in that paper, at minimum should have lifespans around F-119 or greater. Please I beg that this stays on the forum. Thank you.

Honestly those PLA hype/engagement farmer accounts on twitter, not naming names, genuinely piss me off.

 

[tphuang]

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very interesting here

对转桨扇演示验证机近期刚于2025年湖南（国际）通用航空及低空经济产业博览会首次亮相，这是中国航发自主创新研制、国内唯一的桨扇发动机平台，采用先进高速高推进效率拉进式对转桨扇推进器、双自由度共轴对转减速器等新构型设计技术，可满足桨扇发动机先期地面验证和飞行试验的需求，可对接教练机、混合动力飞机、无人自转旋翼机等机型，实现下一代民用客机、运输机、公务机等机型的先进绿色动力愿景。

AECC has developed a propfan demonstrator. and showcased that recently. It's China's only propane engine platform.

it adopts advanced high speed and high propulsion efficiency pull in type rotating propeller fan propeller and double DOF coaxial rotating reducer. It can meet requirements of trainers, hybrid aircraft, unmanned rotary wing aircraft + next generation transport and civilian airliner.

IDK, but it kinds of reminds me of CFM RISE.

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[Tomboy]

IDK, but it kinds of reminds me of CFM RISE.

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If you were to look my post here, you'll find that AECC Commercial Engines is developing a CFM RISE counterpart with stator vanes.

View attachment 165095
from a paper associated with AECC Commercial Engines, some kind of propfan with stator vanes in the works similar to CFM RISE.

 

[Tomboy]

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CJ-1000A seen in flight on the Y-20 testbed recently

 

[GiantPanda]

I am just some guy, so don't go on twitter blabbering about WS-19 lifetime or telling people this is a fact. But a few weeks ago I made a conservative/realistic estimate on where reliability may land on SPF. I would like this kind of thing to stay on SDF. But I know some annoying lurkers may try and take my amateur analysis as fact.

View attachment 165242
WS-19 or the engine in that paper, at minimum should have lifespans around F-119 or greater. Please I beg that this stays on the forum. Thank you.

Honestly those PLA hype/engagement farmer accounts on twitter, not naming names, genuinely piss me off.

China would never have embarked on this compaign of attrition against Japan and the RoC as far back as 2017 if its engines were not comparable.

The most common Chinese fighters around Taiwan and the East China Sea are J-16s and J-11Bs which are WS-10 powered.

Were the TBO very low then the PLAAF be wrecking their own force. But no, they were putting pressure on the Japanese F-15s and RoC F-16s.

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Across the Atlantic, US and Canadian fighters under command of NORAD, the North American Aerospace Defense Command, has averaged just seven

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since 2007, said Capt. Cameron Hillier, a spokesperson for NORAD and the US Northern Command in Colorado. Some years, US and Canadian fighter jets haven’t had to scramble at all.

Japan has seen no such respite. Using the same 2007 time frame as NORAD, even in its slowest year, 2009, Japan scrambled its fighter jets more than 200 times.

Analyst Peter Layton, a former Royal Australian Air Force pilot now with the Griffith Asia Institute, believes the pressure China puts on Japan by air is part of a larger plan.

“I think China wants to keep the JASDF off-balance and reactive, wear out its aircraft and air crew, gain training and keep the pressure up daily on who owns the disputed islands,” Layton told CNN.

In a commentary last year

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blog from Australia’s Lowy Institute, Layton detailed just how far the Chinese flights stretch the JASDF, and how China has the resources to push Japan to limits it may not be able to reach.

“The JASDF’s fleet of some 215 F-15J aircraft bears the brunt of scramble tasking,” he wrote.

“Since 2016, the JASDF have often launched four aircraft for each scramble.

“These daily scrambles are gradually wearing the F-15J fleet out. The concern is that China has some six times more fighters then the JASDF, and could further ramp up intrusions whenever it considers appropriate. The in-service life of Japan’s F-15J fleet is now almost a decision that lies with China,” Layton said.