Originally Posted by CONF iture
Thrust does not control the speed which stays at Valphamax
Why is that? Please explain.
This is what I think will happen if, starting from steady level flight at Valphamax, thrust is rapidly increased with the sidestick maintained at the aft stop:
The airplane will start a phugoid trajectory, accelerating, climbing, decelerating and (possibly) descending, always at (close to) alphamax. The phugoid damping feature will attenuate the phugoid oscillation and eventually the airplane will end up in a steady climb at Valphamax, provided it stays clear of the ground and of structural limits.