Originally Posted by
bearfoil
..." There's a real poser, eh? It takes 10 degrees NU to initiate Climb? There's a sluggo. From 0.80M ?
bear - do take another look at the A340 AIRPROX zoom-climb Appendix B FDR plots, there is a 10 second lag between pitch up and establishment of climb. There's even a hint of the classic "non-minimum phase" control response - up elevator pushes the tail and the whole a/c down slightly before the lift/thrust vectors and Newton's second law build vertical velocity.
[NB no UAS different laws/protections active in the A340 vs AF447, not too clear what commanded the pitch up, lots of elevator action with A/P off controlling G? Is pilot sidestick trace inverted? Who/what adjusting throttle with A/T off?]