At 06:36 PM 19/04/2011, you wrote:
Has anyone tried this
http://www.deturbulator.org/Progress-03192011-15Cheap.asp
It claims a 15% l/d gain at speeds up to 80 kts and looks very cheap
and easy to apply.
Almost sounds too good to be true.
Happy flying. James.
Sent from my iPhone
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Well, the way to test this is to take two Std Cirri, fly them
against each other at the same wing loading and see if they go about
the same. They probably will.
Tape one as described and test again. Absolute measurements are very
difficult to do with glider sink rates. Comparative testing is easier
and will give better results.
Note: When doing comparative testing be sure that the lead glider
knows he's lead and responsible for clearing the airspace and
checking that the aerodrome stays within reach.
Lead may need to change at times. Be sure you have a procedure for
this. Unlike what happened last year at Kingaroy with two unplanned
outlandings.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments since 1978
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
email: mborg...@borgeltinstruments.com
website: www.borgeltinstruments.com
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