On Thu, 22 May 2008 10:41:53 GMT, "Glenn"
wrote:

I had a problem with the gas around the craft, then read the reply
about pulling vapor and knew it was what I see on jets, but how can
such a slow plane make it? I guess the air just is thick enough, and
some surfaces produced fast enough air to make it, huh.

Greg
http://gregsplace.50megs.com