Chinese Engine Development
- Thread starter jackbh
- Start date
I don't think they're exhausts, but the rear casing of the engines just before the vanes. Its possible that the plane had its engines removed, suggesting that it was indeed testing engines. Nozzle vanes can't be too short. You have to consider the angle of the vanes if they're too short and in the most throttled position.
To make my point better, here is the J-11B stress test platform without the engines.
To make my point better, here is the J-11B stress test platform without the engines.
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J-11_stresstest1.jpg
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At this distance its not easy to tell if those are real engine nozzles or just the casings before them. The first thing that came to my mind when I saw the picture was the picture of the J-11B test frame that is now stored in a open air derelict museum. This does not mean that that the J-11BS in that picture does have or have not real engines, just that its hard to tell with complete certainty and under reasonable doubt.
Are you assuming that this very plane is brand new? Or is the photo brand new? Many of the prototypes go around for years in yellow primer without being finished painted. Are you sure this is not an aircraft that has been put into the pasture for retirement? Look at the old H-5 next to it. I get the impression that this field is a storage facility or a museum, and that the aircraft has just been turned into a derelict. The CFTC where they test prototypes has a much drier atmosphere, like a semi-desert, if you have all the pictures of aircraft taken in the CFTC in mind, including that of the J-11B prototypes.
Are you assuming that this very plane is brand new? Or is the photo brand new? Many of the prototypes go around for years in yellow primer without being finished painted. Are you sure this is not an aircraft that has been put into the pasture for retirement? Look at the old H-5 next to it. I get the impression that this field is a storage facility or a museum, and that the aircraft has just been turned into a derelict. The CFTC where they test prototypes has a much drier atmosphere, like a semi-desert, if you have all the pictures of aircraft taken in the CFTC in mind, including that of the J-11B prototypes.
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they are modified J-11 technology demonstration aircrafts for the J-11B program.
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I checked all my photo database. The only picture that showed the exhaust is the avionics prototype in grey color. There is never a clear shot of the exhaust nozzle of any of the operational J-11B. Of course, that would be because much of the photography is centered around the front.
I try to confirm the photography by measuring the length of the nozzle relative to the tail fin. The tip of the nozzle should correspond near the tip of the tail fin. Both the testbed and J-11BS pictures does appear to have an engine nozzle installed.
So much for the WS-10A being a copy of the AL-31F. I mean like I can't tell Pratt and Whitney and GE engine exhausts from the F-16s at a distance. But you can tell it the difference on the WS and the Al engines here, even from a distanced fuzzy shot.
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I think it's a derivative engine of the WS-13.
WS-12 program was terminated in 1999 due to lack of funding. this engine was derived from a base core having a corrected flow of about 15kg/s .
the picture below is displaying a series of core engines with the inlet corrected airflows in the range of 5kg/s to 30kg/s .
left to right:
5kg/s(WS-500,700kgf engine...),15kg/s(12A core),20kg/s(WS-13),30kg/s(WS-15--T/W ratio 10)
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Hard to say from this distance, considering color can change depending on camera exposure and lighting. It may seem short but its hard to tell.
Usually the planes flying in yellow are prototypes. The earlier prototypes may be using AL-31F up to a point. Prototypes may have a two or three or four digit number in the body.
Operational J-11s are gray in color and should have a five digit number in the tail fin.
