Effect of flaps
I understand that different aircraft behave differently when flaps are extended / retracted. Some with flaps extended tend to pitch up, some pitch down. Some pitch up initally slightly, then pitches down more etc etc.
I believe this depends on aircraft design.
I have 2 questions:
1. Can someone explain the reason why some aircraft pitch up while some pitch down? I think it's related to C of P position on the airfoil when flaps are operated in relation of C of G of aricraft, and possibly to some extent the direction of the airflow from the wing to the tailplane due to flaps position.
2. Specifically to Zenair CH701 which has one 1 flap setting (used for landing), just to confirm with others who flew this aircraft - with aircraft in trim for straight & level:
- when flaps is extended aircraft noses down
- when flaps retracted aircraft noses up.
Anyone can confirm this?
Cheers!