Sanding or Waxing - PIK 20 Question

Chris Nicholas wrote:
U
Sorry to be ignorant, but I don't understand the technicalities of this.
What is the " . . . unfavourable pressure gradient . ." ? One in the
wrong direction, or too large, or what?

And in what sense does a transition have energy? Particularly "enough
energy to keep the bubble small" ? If it had energy, the idiot layman's
thinking is that more means bigger.

Hoping for education, not flames or sarcasm.

Chris N.

Chris,

I highly recommend you run, don't walk, to the book store and purchase
the Illustrated Guide to Aerodynamics by Skip Smith. All of this stuff
and a whole lot more is covered in a very easy to read format aimed at
the layman. It doesn't dumb things down too much, so you still need to
think and maybe even scribble some numbers from time to time. You can
find it online at any of the usual places:

http://www.amazon.com/exec/obidos/tg...72135?v=glance

Happy learning,

Erik Mann (P3)