>I have been trying to work through the concepts and
>simple physics of their explinations to gain a grasp of how DS works.
>Well, try as I may I can not make the theories work.
>Perhaps you can help me out.
This sketch shows how the airspeed changes during one DS orbit:
http://www.charlesriverrc.org/articles/flying/markdrela_ds.pdf
Here's some accompanying text:
http://www.charlesriverrc.org/articles/flying/markdrela_ds.htm
- Mark
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