In realty Mr Asok no fighter jets can fly with a full tank of gas and with a full combat load, thrust to weight ratio of that particular jet is too low to fly but it can run on the tarmac, at best in war situation fighter jets fuels 3/4th of there gas tanks
and as for fully combat load there not such thing fully combat loaded jet, they armed for specific mission, for example F-15 and Su-27 might carry 10 air to air missiles but restricted to carry 8 air to air missiles for aerodynamic and thrust to weight restrictions
From your above post J-20 can easily super-cruise with your stated 35,000 lbs WS-10G
5th Gen. Fighters (F-22, T50, J-20) can take off with a full tank of gas and full combat load and do Supersonic Cruise, without burner, as well, because their weapons are stored internally. At Supersonic Speed, the externally loaded weapons and gas tanks create a great deal of drag, hence older jet CAN"T stay supersonic very long even with the use of afterburner.
If jets can't take off with full tank of gas and full combat load, they can refuel aerially to fill up the tank. You are right that you don't see older jets going to combat with full loaded because that would too low of Thrust to Weight Ratio, and Trust to Drag ratio. That is the difference between 5th Gen. and older jets. 5th Gen. has a vastly more powerful engine and much and much superior aerodynamic design.
If you are suggest J-20 is using
WS-10G, you are contradicting people like Deino, who has insisted J-20 don't have TVC nozzles.
WS-10G has Thrust Vectoring and stealthy nozzles that have jagged edges and tiles.
Let's see if J-20 could use
WS-10G for Supercruising as you have suggested.
WS-10G has a maximum thrust of 155kN, which is similar to F-22. And that is 15.8 Tons. Dry thrust or military thrust is usually 60% of that, so it is around 9.48 Ton for each engine, or 18.96 Tons for both.
F-22's empty weight is 19,700 kg or 19.7 ton, plus a tank of gas (9 ton) is 28.7 Tons. It is widely accepted that J-20 is longer than F-22, so J-20's weight is probably near 20 Ton, plus a tank of gas (12 ton) is 32 ton. The long range missiles
AIM-120 AMRAAM weights 152 Kg each, so 6 is 912 kg, nearly a ton. Plus 2 short range missiles, and the full weapon load is over 1 ton.
So combat weight for F-22 is 30 Ton, and for J-20 is 33 Tons. Not much difference. Since F-22 could easily do Supersonic Cruise with its combat weight, it's possible that J-20 could also do it, since at Supersonic speed, it is the total DRAG that mostly determine its performance. Unlike older jets, both J-20 and F-22 are optimized for Supersonic Cruise by storing their weapons internally.
So I do agreed that J-20 could do Supersonic Cruise with WS-10G. The question of is J-20 actually using it? That depends on WS-10G's state of development. I haven't heard much about it. Does it even exist at all?
Remember, WS-10A passed the acceptance test only on 2005, but has run into a lot of trouble since then. In 2009, the whole J-11 that uses WS-10A was grounded due to quality control problem of WS-10A and PLAAF returned the engines to the Factory.
So in conclusion, it is possible for J-20 to use WS-10G (if it actually exists) to do Supersonic Cruise, simply because F-22 could do that too with similar weight and similar thrust engine. This actually makes more sense because I have noticed the nozzles of J-20 could Vector not very obviously. Others have disagreed it got TVC.
That, however, do not EXCLUDE the possibility that J-20's engine uses WS-15 core mated with the WS-10G vector nozzle. That 3D TVC nozzle was demonstrated on CCTV on 2004. There is no reason to believe it could not be installed on any other engines, other than WS-10G (if it exists at all). Also, WS-10G is only internet rumored to have existed. There is no confirmed/unconfirmed picture of any kind, nor any official/semi-official announcements.
