Thank you, I just went a bit off the edge there because it reminded me of another person on a certain forum who was trying to conclude the J-36 was powered by 3x RD-33 engines.. Baffling to me.
Shenyang next gen combat aircraft thread
- Thread starter Blitzo
- Start date
Yes, I know what you are referring to, that one was a bizarre conclusion.
One thing I've realized over the years is that with whether it's writing articles online, or making drawings, or tweets (all of which are easily linked), I need to take effort to safeguard and account for people interpreting things either too literally or not being able to think logically. Certain things either need to be omitted, or explicitly laid out so that they can be guided to the right conclusion.
I criticized that person about such bold nonsensical assertion on powerplant.
As I have said I would not be surprised if it was WS-19 being used for J-XD.
My expectation is 12 ton force afterburner being close to baseline of Al-31.
Having 2 of them would at most be usable to lift a 36 ton heavy aircraft.
Uh, are you utterly clueless about its size? It's as big as a Flanker. They're HUGE. They'll be flying around with WS-15-class engines, unless you're satisfied with a T/W of a flying wing bomber.
I don't see the issue. TWZ told me they were flying wing bombers.
Quoting my mother: If [TWZ] told you to jump off a cliff, would you?I don't see the issue. TWZ told me they were flying wing bombers.
I am not clueless unlike you that demonstrates being uninformed on the topic.
Al-31 engine powers Su-27 and at maximum load thrust to weight is 0.75 !
J-XD has far larger wings and no rudders, much better lift and far less drag.
If it had Al-31 and same maximum takeoff weight as Su-27, would be faster.
Especially considering aerodynamic drag of externally mounted armaments.
J-XD does not need same thrust to weight ratio as Su-27 for take off distance.
Takeoff distance is not all a fighter jet needs to do, to maintain adequate flight performance with a possibly pretty heavy airframe (considering that 5th and by extension 6th gen fighters generally have large volume and rather high density for their geometric size, and that these new jets would be absolutely packed with avionics, sensors and such) thrust is needed and two ws-19 class engines just won’t cut it.
In addition, 6th gen fighters will be much more demanding in terms of power generation, which again two ws-19s won’t nearly be enough for.
What's the expected maximum thrust of the WS-19? ~115 kN with afterburners?
WS-15 will exceed that dry, providing for, among other things, supercruise.
There is no reason why J-XDS should not be expected to have a superior TWR to Su-27 overall, heck it should be expected to have a superior TWR to 5th generation aircraft as well.
As others have written, TWR is not simply about takeoff distance, but rather about kinematic performance for all flight regimes.
Even WS-15 would likely be an interim measure for initial production J-XDS airframes -- a VCE/ACE of a similar or slightly greater thrust class to WS-15 would be the target powerplant for this aircraft (as well as J-36).