(Mark James Boyd) wrote in message news:40252a00$1@darkstar...
F1y1n wrote:
high angles of bank and slow speeds (and ergo light weights too),
the inner wing is significantly slower than the
outer wing, and tacking on some knots is most
efficient (to keep the length of the inner wing nicely above stall)...

Mark Boyd


I don't believe your argument is correct. What determines the lift and
drag coefficients is angle of attact, NOT airspeed.

This is true, and if the glider is at a certain pitch angle straight,
level, and coordinated in still air, both wings are at the
same AOA. If the two wings are at different airspeeds,
like in a turn or skid, the two wings are at different angles of attack.

In a coordinated turn both wings are at the same AOA (please see my
reply to the other post in this thread). In an uncoordinated turn this
is not the case. Think of the direction of the airflow over the wing -
in a coordinated turn the airflow is always from the same direction
regardless of position on the wings; in an uncoordinated turn this is
not so, hence the AOA will be different. I was talking about
coordinated turns only (and I presume you were too in your original
post).

The inner wing is
flying at the same angle of attack as the outer wing, think about it.

Not if the wings are at different airspeeds. This is how we
do a spin. One wing is "more" stalled than the other wing
(i.e. has a higher AOA because it is the inside wing, and has less
airspeed).

Yes, in a spin the inner wing is flying at a higher AOA. But spin is
not a coordinated maneuver - see above. This analogy is moot.

Speeding up won't make you climb better.

Err...well, we are trying to sink less.

Well, it's half-full for me.