Actual SeeYou measurements

ASW-27B dry (8.2 lbs/sf)
Altitude 13,000 ft
TAS/IAS: 71/53 mph
Measured radius: ~350 ft
Implied bank angle: 43.5 degrees
Stall speed (calculated): ~51 mph

ASW-27B wet (11.5 lbs/sf) -- prior day
Altitude 13,500 ft
TAS/IAS: 84/61 mph
Measured radius: ~515 ft
Implied bank angle: 42.5 degrees
Stall speed (calculated): ~57 mph

9B


At 03:06 20 October 2004, Eric Greenwell wrote:
Bill Daniels wrote:
OK, this is going to get good.

Eric thinks wide fast turns work best for him.

'Fast' is relative: at 8.2 lb/sq ft, going a slower
is
counterproductive. I can slow down to 45 knots from
the usual 50, but
the glider isn't very steady, feels 'draggy', and it
doesn't climb any
better, even in very smooth thermals (this measurement
done when
circling with other gliders). In anything but very
smooth thermals, the
50-52 knots is needed to have decent control, anyway.

I think 45 degree turns are
best on average with steeper turns useful in small
cores. If fly as slow as
I can without risking a stall.

This may be appropriate for the Nimbus 2, but not for
the ASH 26, where
the stall is noticeably lower than minimum sink. Waibel
told me once
that he considers this a safety feature.


Lets have a poll. Tell us how you thermal.

And what, and where. These are likely important reasons
for your bank
angle and speed preferences.


Bill Daniels



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Eric Greenwell
Washington State
USA