Re: Airplane Drag

[Jim Green <JMGreen@SISNA.COM>]

> In the previous posts, you explicitly narrowed the topic to skin-friction
> drag.  More recently you asked about total drag.  Big difference.

No, John, at least I thought I was asking about flaps and ailerons.
I have been told most assuredly that extending flaps at high speed produces
less drag than extending them at lower speed. (I don't know what "high" and
"lower" are.)
I find the physics of this a little hard to fathom -- if true (:-)

I will study your page further, but I am afraid that my interest is not
high, so don't hold your breath. (:-)

TX

Jim



> See the Venn diagram at
>   http://www.monmouth.com/~jsd/how/htm/4forces.html#fig_drag_venn
> and the subsequent discussion of how the various pieces scale with angle of
> attack.

Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen