Shenyang FC-31 / J-31 Fighter Demonstrator

Totoro

Major
VIP Professional
Okay. Assuming Oedo and Pupu are right, I do wonder what "heavily modified" could mean. Larger wing?

Also, WS19 would mean JF-17 would finally get a proper engine without export limitations, no? It'd be pretty silly if suddenly WS19 was uncompatible with JF-17. And I guess it'd also mean WS-13 is a stillborn project, as was long suspected now.

And why, WHY J-35 designation? Can someone just throw the marketing people out? J-31 idea was horrible enough due to skipping so many numbers. But J-35 very clearly going after F-35 is plain horrible. J-20 skipped a few numbers as it was new gen, fine. Why not go on? J-21, J-22 etc? It still speaks "new gen". No need to play the marketing game. Not every customer is Indian Air Force and not everyone needs to be Lockheed Martin with their "brilliant" F-21 idea.
 

latenlazy

Brigadier
Okay. Assuming Oedo and Pupu are right, I do wonder what "heavily modified" could mean. Larger wing?

Also, WS19 would mean JF-17 would finally get a proper engine without export limitations, no? It'd be pretty silly if suddenly WS19 was uncompatible with JF-17. And I guess it'd also mean WS-13 is a stillborn project, as was long suspected now.

And why, WHY J-35 designation? Can someone just throw the marketing people out? J-31 idea was horrible enough due to skipping so many numbers. But J-35 very clearly going after F-35 is plain horrible. J-20 skipped a few numbers as it was new gen, fine. Why not go on? J-21, J-22 etc? It still speaks "new gen". No need to play the marketing game. Not every customer is Indian Air Force and not everyone needs to be Lockheed Martin with their "brilliant" F-21 idea.
Maybe someone in the PLAN planning department has a lame sense of humor?

WS-13 may not be stillborn. Could still end up on early production planes as an interim engine while the WS-19 is in development.
 

Brumby

Major
The F-35 has an automated glide path system which continuously adjust glide path with flap adjustments, that being said the max over the stern airspeed is 145knts to facilitate returning with "weapons" still in the bays, rather than having to jettison in order to lower terminal approach speed.

My underlying understanding is the glide path during aircraft recovery dictates a constant speed. The question is how much of the aircraft's design plays a factor in delivering this constant speed and whether flight controls can compensate to some extend. My suspicion is that the J-15 has difficulty maintaining a constant speed during recovery with its flight controls and hence the crashes. The bubble effect at the stern is not something that can be simulated except at sea testing and so is a problem that can only be flushed out at the tail end of design testing. Am I missing something here? Your thoughts.
 

Air Force Brat

Brigadier
Super Moderator
Wing area isn’t calculated by the area of the wing excluding the body, but the area of the entire fuselage in between the wings.

Actually it is calculated from the wing root to the tips, that may indeed include the wing shaped surface of the center fuselage. The longitudinal line from the nose of the aircraft to the tail is the line of demarcation.... every thing outboard of that line on either side is "Wing Area".....
 

Air Force Brat

Brigadier
Super Moderator
My underlying understanding is the glide path during aircraft recovery dictates a constant speed. The question is how much of the aircraft's design plays a factor in delivering this constant speed and whether flight controls can compensate to some extend. My suspicion is that the J-15 has difficulty maintaining a constant speed during recovery with its flight controls and hence the crashes. The bubble effect at the stern is not something that can be simulated except at sea testing and so is a problem that can only be flushed out at the tail end of design testing. Am I missing something here? Your thoughts.

Once you turn onto final you continue the process of bleeding energy by reducing thrust and increasing angle of attack, once the gear and full flaps are out, you bring in whatever additional power is necessary to "nail" a target airspeed, depending on aircraft weight..

there is an "electronic beam" from the stern landing area of the ship, the F-35 has an automated system that retracts/extends the flaps on the trailing edge of the wing to help you maintain the glide slope.... it takes a lot of the "monkey motion" of attempting to nail a target airspeed, while maintaining the optimum "glide slope", so yes it is much easier...

the J-15 is "old school" and that involves a lot more manual "pitch correction" and "throttle jockeying" to maintain the optimum airspeed, while remaining on the glide slope, that's what "paddles" does at the back of the boat, he calls you high or low, and expects you to make the necessary adjustments, every approach is on film and heavily critiqued in order to help you refine your ability to bring the aircraft "aboard ship".
 

gelgoog

Brigadier
Registered Member
This is what I get with machine translation.

最多1000亿的单子, 里面顶多也就五分之
小批量采购, …

31已死, 以后是35
31 is dead. in the future it is 35.

歼35还是FC-35?
J-35 or FC-35?

歼-35
J-35

真的拿到户口了?

呦西!

我就键盘一下, 希望能上双大推.

不会上双大推.

海四总要重新设计吧, 不知道其他型号是不是从它衍生出来, 还是走肥电模式。
...

周六的时候, 听天堂风暴告诉我说, 是拉皮, 整容, 削骨版, 总之骨头鹰在设计上有缺陷, 这个是大改版。

On Saturday, I was told by Heaven Storm that it was a skin-lifting, cosmetic and bone-cutting version. In short, the design of the skeleton eagle was flawed. This is a major revision.
 
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SinoSoldier

Colonel
This is what I get with machine translation.

最多1000亿的单子, 里面顶多也就五分之
小批量采购, …

31已死, 以后是35
31 is dead. in the future it is 35.

歼35还是FC-35?
J-35 or FC-35?

歼-35
J-35

真的拿到户口了?

呦西!

我就键盘一下, 希望能上双大推.

不会上双大推.

海四总要重新设计吧, 不知道其他型号是不是从它衍生出来, 还是走肥电模式。
...

周六的时候, 听天堂风暴告诉我说, 是拉皮, 整容, 削骨版, 总之骨头鹰在设计上有缺陷, 这个是大改版。

On Saturday, I was told by Heaven Storm that it was a skin-lifting, cosmetic and bone-cutting version. In short, the design of the skeleton eagle was flawed. This is a major revision.

Thanks!

Could any other member fluent in Chinese provide a translation of what PUPU said?
 
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