I believe there is a point in maneuverability where if you surpass it, all that adding TVC will do is black out your pilot. I think they said J-10 is there and I believe Typhoon is there too. Is J-20 there? With WS-15? So, add things wisely; not every upgrade is suitable for every aircraft.
That's absolutely correct, remember the F-22 was putting folks to sleep, the F-35A, AF-02 when flown without the FCS "pitch limiter" was flown to 9.9 Gs, so people yapping about the F-35 being a pooch are "nim-rods" and they would to a man prolly be asleep well before 8 Gs or so, the F-22 or PAK-FA, J-20 and F-35 are prolly on the same page.
From the looks PAK-FA would likely have the highest instantaneous pitch rate at a given airspeed, prolly why they found significant airframe cracking that actually grounded 51, they considered "scrapping it", but later after taking the fuselage of 056 to repair 055, decided to refurbish 051 as well.
So for J-20, its probably in a very happy place with those very "long throw" canards, the FCS likely dials the throw back as speed increases, but they are huge, and they have the longest control throws that I have personally observed, I believe likely 90 degrees positive or negative pitch. They appear to move through nearly 180 degrees of travel, and they are "distant coupled" so a very powerful lever to move the aircraft rapidly, particularly since they move in unison with the flaperons/elevons/ruddervators to rapidly pitch the aircraft,
I believe there is a point in maneuverability where if you surpass it, all that adding TVC will do is reduce your TWR and black out your pilot. I think they said J-10 is there and I believe Typhoon is there too. Is J-20 there? With WS-15? So, add things wisely; not every upgrade is suitable for every aircraft.
with controls on both ends of the aircraft.
So you are right, likely no need to consider OVT, the Eng says very clearly that they will NOT, and are not pursuing it. He is in a different loop, or on the "inside track" than most of us. so he has me convinced, as Jeff says, we will have to wait and see, but we've seen none of the prototypes sporting OVT, and to be honest, incorporating OVT would require re-writing most of the FCS in my personal opinion.
Not that they couldn't or wouldn't, but why, and then you would basically start flight test from scratch, I just don't see any logic there???
Plus, all those very high G maneuvers have a very negative effect on airframe life, not to mention cracking or possibly even braking something, look at the F-15 that broke in half just aft of the cockpit??? The fuselage longerons were improperly manufactured, but still??? and the F-15 is a very strong airframe.