China's transport, tanker & heavy lift aircraft

In4ser

Junior Member
I know this has probably been covered before but can the W-20 act as a stopgap for the CJ-1000A and what are it’s disadvantages in comparison i.e. why it would not be used for C-919 primary engine? I’m assuming it’s mostly for cost and fuel efficiency?
 

Hendrik_2000

Lieutenant General
I know this has probably been covered before but can the W-20 act as a stopgap for the CJ-1000A and what are it’s disadvantages in comparison i.e. why it would not be used for C-919 primary engine? I’m assuming it’s mostly for cost and fuel efficiency?
I supposed they have to do the testing from scratch since the CG of gravity and weight distribution change. So the flight software must be changed. It will set back the certification to years of delay. But if CFM embargo LEAP engine they have no other choice. But I doubt it will come to that. Because China can retaliate by denying Boeing 737 Max recertification. Boeing already suffer from production cut back and without China the viability of Boeing is in question. Specially now that Delta variant rear its ugly head and threaten the reopening of air traffic in western world
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Orthan

Senior Member
I know this has probably been covered before but can the W-20 act as a stopgap for the CJ-1000A and what are it’s disadvantages in comparison i.e. why it would not be used for C-919 primary engine? I’m assuming it’s mostly for cost and fuel efficiency?
WS-20 is a military engine, not a civilian one. Inadequate for civilian use.
 

siegecrossbow

General
Staff member
Super Moderator
I know this has probably been covered before but can the W-20 act as a stopgap for the CJ-1000A and what are it’s disadvantages in comparison i.e. why it would not be used for C-919 primary engine? I’m assuming it’s mostly for cost and fuel efficiency?

I don’t think that China will ever be desperate enough to resort to this. WS-20 is a military engine and has different safety/fuel efficiency/maintenance requirements compared with the CJ-2000. Worst comes
To worst I think they’ll go for a Russian civilian engine as a stopgap.
 

gadgetcool5

Senior Member
Registered Member
I don’t think that China will ever be desperate enough to resort to this. WS-20 is a military engine and has different safety/fuel efficiency/maintenance requirements compared with the CJ-2000. Worst comes
To worst I think they’ll go for a Russian civilian engine as a stopgap.
Not directly transplant the WS-20, but it wouldn't be the first time a military engine was the basis for a civilian engine. The JT9D which powered the Boeing 747 has origins in the military JTF14. The CF6 which powers many Airbus planes was based on the military TF39. The CFM56 was derived from the military F101.
 

latenlazy

Brigadier
Not directly transplant the WS-20, but it wouldn't be the first time a military engine was the basis for a civilian engine. The JT9D which powered the Boeing 747 has origins in the military JTF14. The CF6 which powers many Airbus planes was based on the military TF39. The CFM56 was derived from the military F101.
If they need to redevelop the WS-20 for commercial they might as well just wait for the CJ-1000X.
 

Richard Santos

Captain
Registered Member
I don’t think that China will ever be desperate enough to resort to this. WS-20 is a military engine and has different safety/fuel efficiency/maintenance requirements compared with the CJ-2000. Worst comes
To worst I think they’ll go for a Russian civilian engine as a stopgap.


I find it hard to believe a high bypass turbofan engine in the WS-20 class would have been developed without substantial civilian application in mind. The fact is for such an engine, there is a far bigger potential civilian market than military market.
 
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