COMAC C919

Tomboy

Junior Member
Registered Member
what problem?
That's not a domestic C919, the post was just saying the first normal C919 was delivered this year.
Last year it was said the fuel consumption is slightly worse than the LEAP-1C but quieter. Not sure if anything changed.
Hopefully the "Better then all expected result" means better fuel consumption as well
 

lcloo

Major
But those few years there will be a complete halt in production and thus China will be dependent on Boeing and Airbus. US has again kneecapped China for atleast a few years. They keep doing this and China is still so complecent. Its sad to see actually. This is the atleast the Coma of COMAC for the next few years.
Nah, it will be Huawei moment for COMAC, or the Tian Gong Space station moment for China Space. A few years set back is nothing if COMAC will be emerged stronger than ever after a few short years. Boeing will be down due to lost of a very large and important market.

US ban on engines will aslo make other countries think twice on buying Boeing planes. They might turn to Airbus but then Airbus engines still contains US technologies. Only COMAC planes will be totally free from being banned after they achieved 100% non-US parts or 100% non-US technology content.
 
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Tomboy

Junior Member
Registered Member
I recall there is already a large stockpile of parts for the leap, as well as engines itself. There should still be leap engined C919 being made?
IMO I think it's possible for COMAC to do low rate production through out the rest of this year and next year but they definitely can't use the full capacity of the lines until 2027 when they planned to get the fully domestic C919 done
 

gelgoog

Lieutenant General
Registered Member
Chinese airlines are basically the only ones capable of flying over Russia right now and basically other every airline has to fly around Russia adding quite a bit of travel time and expense.(Which also is why BA stop flying the Beijing route).
Middle Eastern or Turkish carriers can also fly over Russia.

What is the difference between the commercial engine and the one used on Y20 or H6? Can China use engines that is made for Y20 on Comac planes?
The WS-20 engine used in Y-20 is based on the CFM-56 so it is like a generation older in terms of fuel consumption. It only started flying recently as well so it probably has low reliability and low MTBOW.
 

sunnymaxi

Major
Registered Member
The WS-20 engine used in Y-20 is based on the CFM-56 so it is like a generation older in terms of fuel consumption. It only started flying recently has well so it probably has low reliability and low MTBOW.
WS-20 has entered in service last year end.. 12+ units of Y-20B identified with serial numbers.

WS-20 gone through years of long testing and derived from WS-10 core machine which is itself a mature engine. so WS-20 looks fine but i doubt COMAC will use this engine . but AEF-1300(WS-20 civil version) is a ready engine for use on any aircraft.
 

Tomboy

Junior Member
Registered Member
Middle Eastern or Turkish carriers can also fly over Russia.
I don't expect them to open extra routes to China tho, so for the time being the only Airlines that could go from EU to atleast northern China in a reasonable amount of time remains Chinese airlines.
WS-20 engine used in Y-20 is based on the CFM-56 so it is like a generation older in terms of fuel consumption. It only started flying recently as well so it probably has low reliability and low MTBOW.
IMO, I don't think there is any direct correlation between how new something is and how reliable it is. A well designed engine put through proper testing and certification could be highly reliable with high MTBO from the get go.
 

gelgoog

Lieutenant General
Registered Member
This is a problem, and this has deeper ramifications. If this happened, other known sanctions with American and European are just a matter of time. China isn't Iran nor even Russia, it's just impossible to sustain fleet so large on scavenging.
Knowing the US sales of aircraft parts will be the next thing to cut. Then they will stop sales of A320NEO with CFM and Pratt & Whitney engines. All US engine exports will be cut. And then they will try to convince Rolls-Royce to stop engine supplies next. They can threaten Rolls-Royce with a boycott of their exports to the US and expropriation of their Allison subsidiary in the US to make them concede.

Iran is more sophisticated than you give them credit for. Iran makes their own turbine blades for CFM-56 engines to service their Airbus aircraft for example. They can maintain their engines by themselves.

The Chinese government should just make a crash program to make its own consumables and parts to supply the existing fleet. The thing is, the air industry isn't as critical for China as for Russia because of HSR.
If Russia could maintain the Superjet flying, China can maintain its Boeing and Airbus aircraft.

If engines for Boeing airline jets are affected, then thousands of Boeing jets in China will face maintenance and engine overhaul problem. And not only that, Airbus jets are also using engines with US technologies, so delivery of new Airbus jets will be affected as well.
Exactly.
 
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