Shenyang FC-31 / J-31 Fighter Demonstrator

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hmmwv

Junior Member
It's good news, because that means SAC will have to ship another fuselage to Yanliang! ;)

DigitalGlobe, have your bird ready.
 

Air Force Brat

Brigadier
Super Moderator
It's good news, because that means SAC will have to ship another fuselage to Yanliang! ;)

DigitalGlobe, have your bird ready.

I hope you're right, but Shenyang may not have another ready, I hope I'm wrong. If I'm not mistaken this is an aircraft in search of a contract to buy?
 

Player99

Junior Member
Lets not just blame Shenyang, all mechanics who drill too large a hole, fill them with a bigger screw, really, how would you like to go tell the boss, sorry boss, "I just jacked our 60 million dollar prototype and threw our whole plan into the dumpster by using too large of a drill bit". Much better to throw in the larger screws, and hope for the best, been there and done that. Then when it breaks you can blame the next guy, "he told me to". Really, it happens everyday, on every planet in the solar system, and yes I have been paid to work on real airplanes, and I have been chewed out by Klem, when I messed something up. No, really, and yes I have flown those same airplanes that I worked on, most of the time thats the recommended fix, so until we get more details, lets lighten up on Shenyang!

I‘m sure what you said is universal, especially with earlier generations of anything. But with the 5th gen. fighters, this probably will have to change. The automated production lines of the F-35 should be the only way to go (I saw a probably promotional video of this).
 

Player99

Junior Member
Lets not just blame Shenyang, all mechanics who drill too large a hole, fill them with a bigger screw, really, how would you like to go tell the boss, sorry boss, "I just jacked our 60 million dollar prototype and threw our whole plan into the dumpster by using too large of a drill bit". Much better to throw in the larger screws, and hope for the best, been there and done that. Then when it breaks you can blame the next guy, "he told me to". Really, it happens everyday, on every planet in the solar system, and yes I have been paid to work on real airplanes, and I have been chewed out by Klem, when I messed something up. No, really, and yes I have flown those same airplanes that I worked on, most of the time thats the recommended fix, so until we get more details, lets lighten up on Shenyang!

I‘m sure what you said is to various extent universal, especially with earlier generations of anything. But from the 5th gen. fighters on (and anything of such precision requirement), this probably will have to change. The fully automated production line of the F-35 should be the only way to go (I saw a probably promotional video of this).
 

hmmwv

Junior Member
I hope you're right, but Shenyang may not have another ready, I hope I'm wrong. If I'm not mistaken this is an aircraft in search of a contract to buy?

Yeah it's true they may have to shift a prototype under construction to static testbed, that'll put a huge dent in its schedule. However now the original poster of the alleged incident is retracting his statement saying that he misinterpreted the information and the incident involved a different aircraft in a time frame that's impossible for it to be the J21. So this whole situation is pretty muddy right now, we'll have to wait and see.
 

Air Force Brat

Brigadier
Super Moderator
Hopefully it is not one of the J-20s (!)

Absolutely agreed, and sometimes posters in their haste to break "News" make up their own. I like Shenyang and their design, these things can happen, and if you are a mechanic or worker, they just make you sick. I agree that we all want aircraft that are little jewels, but they have to be taken apart and maintained, it can be a nerve racking process. I installed an aftermarket Sunvisor kit on a friends Cessna 150 Aerobat, FAA approved of course, the hardware they sent was unique and one of the fasteners wouldn't tighten properly. I had drilled a larger hole, I had no choice but to send it out, but it makes me cringe to this day. Now it wasn't a structural issue, I flew that little bird a lot, LOL, and to my knowledge it never caused a problem, but it just wasn't right! My point is whether Chengdu or Shenyang, those guys all love what they do and try very hard to turn out a perfect product, for themselves, their company, and their country.
 

Air Force Brat

Brigadier
Super Moderator
I‘m sure what you said is to various extent universal, especially with earlier generations of anything. But from the 5th gen. fighters on (and anything of such precision requirement), this probably will have to change. The fully automated production line of the F-35 should be the only way to go (I saw a probably promotional video of this).

Well as usual, you are a ready student player, and you're exactly right, when we step into the fifth gen, there's no room for guessing games or messing around. Thats the basis for my statement that the F-22 will likely be the only true fifth gen, its just to expensive and complex to be very practical in the real world, and everything is computerized down to the minutia, as gorgeous as it is, it is Rocket Science, and as they say, "it does not suffer fools well". One small boo-boo and you're out of business, now personally I still think it is worth it, I would have taken the F-22 and made it a more practical aircraft and hopefully that is what Shenyang is doing with the F-60. As you stated the tolerances are very tight and it does take "craftsmen", automated machinery included to get it right. I believe you may be referencing the fact that tolerances on the F-35 were tightened up, as much of the F-22 is hand fitted, and parts off one aircraft may not fit another?
 

visitant

New Member
Registered Member
Well, I also read it on CD a few days ago about some stupid mistakes made by the workers. I wasn't 100% sure they were talking about this plane because the kind of "coded" language they use when talking about such things. Anyway, someone said that the workers used the drill bit of a wrong diameter to drill the holes for the canopy that had arrived later. When they found that the holes were a little bigger than the screws, they somehow decided to go on with it, hoping it would work. But it didn't in the folloing stress test...
He clarify later the quality accident he mentioned happened in 1960s.
 
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