On Jan 8, 8:32*am, Dan wrote:
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 athttp://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...

Thanks Dan. This is really good stuff. My enthusiasm is restored.