I think that the main disadvantage is probably cost and perhaps complexity
or weight, I really don't know. Many jets use spoilers as their primary
roll control. Guys are overthinking this one. If spoilers were really
different then a type rating would be required on a MU-2 and if they were a
problem at low speed they wouldn't be used on a Helio.

Mike
MU-2


"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