T o d d P a t t i s t wrote:
"Bob Gardner" wrote:


ASA's Test Prep and "Stick and Rudder" say that Answer A is correct. Dunno
what Gleim says. Kershner says that both wings are stalled, but further on
in the discussion he talks about "unequal lift." Hard to find an unequivocal
answer.


I don't know the answer to this question, but I do know the
following:

1) A stable spin mode can occur with both wings stalled, or
only one.

2) Stalled wings always "produce lift." The deeper into the
stall, the less lift they produce. If only slightly past
the critical angle ("partially stalled"?) the wing produces
nearly its max lift. If well past the critical angle ("full
stall"?) it produces less, but it would "regain" lift if the
angle decreased, even if it never actually unstalled.

I'd probably call it drag rather than lift in a stall. :-) Having said
that, I don't doubt for a minute that the wings will product unequal
amounts of drag as the airplane descends in the spin.


Matt