On Apr 14, 1:24*pm, bildan wrote:
On Apr 14, 10:18*am, (Richard Lancaster)
wrote:

Hi,

I've put some lecture slides on the following topics:

* Principles of glider flight
* Glider instruments

onto the web site:

http://www.carrotworks.com/

Regards,

Richard

Generally excellent for an introductory presentation. *There are a few
very minor issues that only an engineer or aerodynamisist would
catch. *One is the use of the Greek letter Alpha to label the AoA of
the fin in a skid - Beta is correct.

Another is the description of the secondary effect of roll with the
application of yaw inputs (Yaw to roll coupling). *You are correct
that this is momentarily due to a spanwise difference in airspeed but
you failed to mention that the continued, and much larger, effect is
due to dihedral. *Your description of 'adverse' yaw is correct but I
cringe at the negative connotation of the word. *Adverse yaw is not
"bad" yaw - it's just what ailerons do. *In fact, 'adverse' yaw can be
quite useful in soaring turns as well as in crosswind landings.

BTW, your description of how lift is generated is just fine for this
sort of presentation. *Some will argue endlessly about it without
reaching a consensus but yours is more than good enough.

I was maybe a little imprecise in my niggle, but Kevin has described
it very well. My main criticism would be that glider pilots don't
really need to know this. The rest of the stuff is fine.

Mike