Trims and Forcefeedback

[Furio]

Originally Posted by zipper

Trim can vary by weight, but much more significantly by CG and speed. For best speed you want to be loaded at the aft limit because the stabilizer produces less downforce* at that loading than at the forward limit (the stab always produces downforce in a normally loaded conventional aircraft).

This is true in theory, but at the price of a reduced stability. P51 emptied rear tank before attempting any aerobatic manoeuvre.

Originally Posted by zipper

Some aircraft nose up sharply when flaps are lowered - some don't. That would be a function of the stabilizer size and distance from the wing and the type of flaps.

This is true for the immediate reaction of plane (more common in high wing design). Fact remains that you must re-trim – PRESTO – nose down and maintain a steeper glide.