ORIGINAL: john agnew
Jim
Please advise on your tail incidence tests ASAP. I am just finishing mine and would like your views on this. Are you using any flap/ elevator mixing? The manual seems to suggest that you need some elevator trim when the flaps are being deployed but returning to no trim when flaps are fully deployed or have I msread this? Could the down elevator trim issue be resolved by adjusting the turbine thrustline? Bet your flying weather is better than ours.
Best regards
John
with partial flap (take off flap as some call it) most planes takes down trim as the nose will lift up, as you further drop the flap to the point it's more a speed brake the drag causes the nose to drop so you need up trim.