Too much nose-down pitch moment on landing?

[J20Stronk]

@LJQCN101

Is the plane supposed to have such a harsh nose-down attitude when landing? Almost every other aircraft, even those without FBWs like the F-15, MiG-29 and Su-25 will either hold their nose on touchdown or at the very least they will gently lower their nose and not lose all of their lift and sharply sink their nose into the ground.

 

The JF-17 has a pitch-axis FBW, therefore I assume it would do its best to hold pitch all on its own without any input from the pilot. The Su-27, F-18, F-16, M-2000, even the F-15 and MiG-29 which do not have FBW can hold their pitch on touchdown without any pitch input.

 

I have 3 tracks, one is the JF-17, one is a J-11 and the last is an F-15C. All of them I landed as gently as I could without any pitch input, just throttle control. Ground effect did the flaring for me to smooth the touchdown. No pitch input was commanded to hold pitch on touchdown.

 

As you will see, both the Flanker and the F-15 managed to keep their noses high on touchdown without any input from me, using only their FBW/CAS instead, and gently lowered the nose themselves.

the JF on the other hand, sunk it's nose as soon as the main gear made contact with the ground, even though the FBW deflected the elevators in an attempt to dampen and hold pitch.

 

Not sure if this is correct to the real aircraft, but I though I point this behavior out.

 

 

Su27 pos pitch moment on touchdown.trk JF no pos pitch moment on touchdown.trk F15 pos pitch moment on touchdown.trk

Edited March 6, 2021 by J20Stronk

[LJQCN101]

Hi, yes there's currently too much of nose-down pitching moment on touch-down and landing-roll compared to real life. Working on it.