J-20 5th Generation Fighter VII

Blitzo said:

I've actually been wondering about this for a while.

3D TVC felt to me like the range of motion would impinge and come dangerously close to the additional aft fuselage structures, namely the twin tailbooms in particular. Not impossible, but it did strike me as a potential concern in terms of proximity.

However if they go for 2D TVC, that would actually make a lot more sense in terms of rear structures as vertical movements of the nozzle and thrust won't have anything to impinge on.

Click to expand...

latenlazy said:

I think the way the J-10 TVC’s nozzle is designed limits the impingement issue. We’ll see what happens but if they’re still worried about impingement they could just use the same nozzle and limits its range of motion, rather than design a whole new nozzle ¯\_(ツ)_/¯

Click to expand...

tankphobia said:

As an aside, is the photographer basically risking serious jail time for doing this? It looks like he's doing it while hiding in a bush!

Click to expand...

Maikeru said:

Perhaps 2D nozzles are/can be stealthier?

Click to expand...

latenlazy said:

Yeah imo that would be the only reason why they’d actually wait on a new nozzle. It’s possible that they found axisymmetric TVC just didn’t offer much additional benefit relative to pitch only TVC and they could get the same flight envelopes gains with just 2D TVC, so they could bank in additional stealth benefits with a 2D TVC. The other thing to consider though is whether 2D TVC will bring thrust penalties. It may not of course, but that’s another open question.

Click to expand...

latenlazy said:

I think the way the J-10 TVC’s nozzle is designed limits the impingement issue. We’ll see what happens but if they’re still worried about impingement they could just use the same nozzle and limits its range of motion, rather than design a whole new nozzle ¯\_(ツ)_/¯

Click to expand...

siegecrossbow said:

So the new nomenclature:

J-20 single seater with AL-31 or WS-10C — J-20
J-20 twin seater — J-20S
J-20 with rear cockpit bulge and WS-15 — J-20A

This does explain a recent comment in Yankee’s article in which one of his PLAAF’s contacts stated that even though their unit are not getting the latest and greatest J-20, they hope to be the first to achieve aerial combat kills in honor of their Korean War forefathers.

Click to expand...

siegecrossbow said:

So the new nomenclature:

J-20 single seater with AL-31 or WS-10C — J-20
J-20 twin seater — J-20S
J-20 with rear cockpit bulge and WS-15 — J-20A

This does explain a recent comment in Yankee’s article in which one of his PLAAF’s contacts stated that even though their unit are not getting the latest and greatest J-20, they hope to be the first to achieve aerial combat kills in honor of their Korean War forefathers.

Click to expand...

vincent said:

Link?

Click to expand...