On Mon, 29 Sep 2003 19:51:14 +0200, Stefan
wrote:

Martin Hellman wrote:

Something that is rarely said when MacCready speed to fly is discussed
(including texts on soaring!) is that there is a major assumption in
the math behind it: that you can stop at any point and immediately
find a thermal of the strength indicated in the MacCready window.
Wouldn't that make soaring easy -- and probably a bit boring.

There was an interesting article in Soaring Magazine about a year ago
which talked about related issues.


The best and most complete discussion of this issue is still Helut
Reichmann's Book "Cross Country Soaring".

Stefan

However we will no doubt reinvent the wheel here.
The problem isn't whether to fly Macready speed, it is what to set the
"expected lift strength" to and Reichmann covers this nicely.

Mike Borgelt