spoilers vs. ailerons

"Matt Whiting" wrote in message ...
Mike Rapoport wrote:

Spoilers function the same as ailerons at low angles of attack and better than ailerons at high angle of attack. The
primary advantage of spoilers instead of ailerons is that it enables full span flaps. Spoilers also reduce or
eliminate adverse yaw.

I assume there must be some disadvantages of spoilers for roll control as you see them so rarely. What are the
drawbacks? Cost??

Matt


What happens when the wing is inverted? If you are pushing negative Gs then the roll control will be reversed?