On Tuesday, September 10, 2013 6:52:26 AM UTC-7, son_of_flubber wrote:
http://www.youtube.com/watch?v=t2sozrof3HY



Youtube video of a paper sailplane thermally over an electric stove.

Wow! He is building "my" aircraft! (Actually my Dad taught me that one.) That is what I show all the kid when I have a chance. What a beautiful machine to show the effect of aerodynamics.
Heinz,
soarboy at comcast dot net