Sharing a thermal

At 8000' 50kts IAS = 58kts TAS, so 27 seconds would
correspond to a 40 degree bank angle. Wing loading
is only relegant to the degree that it affects stall
speed. The only relevant variables for turn radius
are ture airspeed and bank angle - assuming you are
flying in an unaccelerated condition.

Of course you can make a real fast circle if you spin
it...

9B


At 23:30 18 October 2004, F.L. Whiteley wrote:

'Eric Greenwell' wrote in message
...
Bill Daniels wrote:


Most vario's have a time constant of about 2-3 seconds
or more. I put a
bunch of different varios on a test bench last winter
and found some
were as
bad as 11 seconds. The average 45 degree bank thermalling
turn takes
about
13 - 14 seconds

Yikes! I don't know what you are flying, but it takes
my ASH 26 about 27
seconds to make one turn (50 kts IAS, 8000' msl, 8.2
lb/sq ft wing
loading). That's measured from a flight trace. My
ASW 20 was a little
quicker, flying at 7.5 lb/sq ft, but nothing like
14 seconds.

Should be 17secs.

Try your flavor.
http://www.soarcsa.org/thinking_page...adius/turn_rad
ius_calculator.htm

Frank Whiteley