On Jan 7, 12:43*pm, "Matt Herron Jr." wrote:
I would like to measure and compare the actual polar of my glider to
the factory polar. *I would also like to compare the polar with 16.6
meter tips vs winglets. *Are there practical methods for doing this
with a flight logger and normal instruments? *What airspeeds should be
measured, and how many points on the curve are needed to get
meaningful results?

Any experience or suggestions for a procedure would be greatly
appreciated. *The glider is a Ventus C

THanks,

Matt Herron (Jr.)

Hi Matt, if you look at http://www.oxaero.com/Oxaero-Performance.asp,
and download the pdf file on that page, you will get everything you
could want to know about it; for the price of the CD (about 2 tows),
you get the whole thing ready to go. Good work on Jim Hendrix's part!

I've been thinking of doing it, but our season is so short, it seems
never to be the time. Also, Dick Johnson did a polar for my glider
that is very usable...