John's the man!
Thex Luteslinger (Tunare)
37th level bard
> On Mon, 13 Mar 2000, Reeves, Patrick W wrote:
> >
> > But John, what is the air speed of an unlaiden
> swallow? lol :p
> > -------------------------------------------------
> > Rokenn Swiftsong - Karana server
>
> Drag on a body in a fluid is:
>
> D = Cd*pi*r^2*rho*Vo^2
>
> Cd = coefficient of drag of the swallow
> pi = 3.1415...
> r = radius of bird cross-section (approximating as a
> circle)
> rho = viscosity of air
> Vo = velocity
>
> For steady state flight, D (drag) = T (thrust), so:
>
> Vo = sqrt(T/Cd*pi*r^2*rho)
>
> --
> John H. Kim
> kim@...
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