Shenyang FC-31 / J-31 Fighter Demonstrator

Air Force Brat said:

I believe you are correct, which might lead us to believe there were issues?

Click to expand...

As far as I know these are all image we (at least I ) know !

Upppss... the third one was a gif showing it opening and closing !

Air Force Brat said:

I believe you are correct, which might lead us to believe there were issues?

Click to expand...

Or it was redundant. You can use the space taken up by the hydraulics or something else.

vesicles said:

My Goodness! He's trying to help you out! Why would you put him on the ignore list?!

Click to expand...

A closer reading will reveal that I'd placed this poster on my ignore list prior to her or his response to that, particular, post. That prerogative is mine, I believe? Let's not give this any more space, okay?

wtlh said:

I don't have much clue either, ...

Click to expand...

You've got more than a clue! You offered an impassioned defense of parallel evolution while offering an effective criticism of unilinear evolution in the domains of ethnicity and nationality, just yesterday. And you were quite correct!

Enough of this, then?

@ janjak desalin

Moderator's advice: Please calm down !

And now back to the topic !

janjak desalin said:

You've got more than a clue! You offered an impassioned defense of parallel evolution while offering an effective criticism of unilinear evolution in the domains of ethnicity and nationality, just yesterday. And you were quite correct!

Enough of this, then?

Click to expand...

I really didn't know what you were talking about janjak, and I was just pullin your chain a little bit, I read it several times and was unsure of what you were trying to say, I'm very sorry if I offended you, and a very sincere AFB official apology, I read every post on the several threads I follow....I tend to give my buds a little "krap" that's teutonic by the way, and yes I am ,,,,,,, well you get my point.

kwaigonegin said:

I think what he is trying to say is monopoly is not good. It's better to spread the wealth.

Click to expand...

Oh? I just didn't quite follow? sorry, but thanks kwai.

latenlazy said:

Or it was redundant. You can use the space taken up by the hydraulics or something else.

Click to expand...

Well and that's also a very good point, they likely felt the hydraulic brake was redundant, but I think the Ruddervators deflections are more related to pitch, as they seem to deflect with the canards and elevons??? its been some time since we have had a clear video?? (yes it does break my heart to say so), and I am going by memory, if you think they deflect to induce drag, feel free to post a screen shot or picture???

But you may have hit the nail on the head, when you pitch up as you slow down, that aft mounted delta is huge, and you will induce a great deal of drag, in fact if you notice the pitch attitude seems a little flatter than say an F-22 or PAK-FA on landing as the flare is initiated and roll-out follows??

I most certainly had not noticed the brake on the J-31, although I would suspect that it will come in handy on the J-31, it well may prove redundant there as well???

janjak desalin said:

You've got more than a clue! You offered an impassioned defense of parallel evolution while offering an effective criticism of unilinear evolution in the domains of ethnicity and nationality, just yesterday. And you were quite correct!

Enough of this, then?

Click to expand...

Wait, wait, I was not meaning offence at all. All I meant was I had trouble understanding what you meant in the earlier post, and therefore offered a guess on what you meant, with a disclaimer that I could have totally misunderstood you.

The reason being: I do not actually understand the meaning of "parallel evolution" and "unilinear evolution", and what do they refer to in relation to the current topic...

Now, I kind of have a vague idea of what you mean now, but still not entirely sure in the context of the development of J-31.

Unilinear evolution means---after a google search etc---a step-by-step evolution in a series of states from a primitive beginning to a more advanced state.

Parallel evolution means---after a google search and from wikipedia---the development of a similar trait in related, but distinct, species descending from the same ancestor, but from different clades.

So did you mean: AVIC is championing "unilinear evolution" because both CAC and SAC are essentially working in tandem and are in the loop for both J-20 and J-31 projects? But then, do you mean---I sincerely do not know, and this question is not rhetorical---that J-31 is an evolution of the J-20 or vice versa?

For "parallel evolution" bit, I an actually confused too, after checking its definitions. I initially thought you meant a kind of LM vs Boeing type competition. But then, parallel evolution seemed to concern more about "similar traits from evolution from different beginnings", so what has this to do with development strategy for the aviation industry?

wtlh said:

Wait, wait, I was not meaning offence at all. All I meant was I had trouble understanding what you meant in the earlier post, and therefore offered a guess on what you meant, with a disclaimer that I could have totally misunderstood you.

The reason being: I do not actually understand the meaning of "parallel evolution" and "unilinear evolution", and what do they refer to...

Now, I kind of understand what you mean now, but still not entirely sure in the context of the development of J-31.

Unilinear evolution means---after a google search etc---a step-by-step evolution in a series of states from a primitive beginning to a more advanced state.

Parallel evolution means---after a google search and from wikipedia---the development of a similar trait in related, but distinct, species descending from the same ancestor, but from different clades.

So did you mean: AVIC is championing "unilinear evolution" because both CAC and SAC are essentially working in tandem and are in the loop for both J-20 and J-31 projects? But then, do you mean---I sincerely do not know, and this question is not rhetorical---that J-31 is an evolution of the J-20 or vice versa?

For "parallel evolution" bit, I an actually confused too, after checking its definitions. I initially thought you meant a kind of LM vs Boeing type competition. But then, parallel evolution seemed to concern more about "similar traits from evolution from different beginnings", so what has this to do with development strategy for the aviation industry?

Click to expand...

Your post simply substantiate the point that it would be beneficial to all if we stick to simple construct and meaning i.e. KISS rather than convoluted and opaque language in communicating.