Well the Laden Swallow airspeed can be calculated by using the pi r round theory, thus the Unladen Swallow is calculated by subtracting the square root of the volume of recently ingested food times 1.23174 divided by its inverse factor to get EXACTLY what we think it will acheive (optimally). <img src="http://www.catsailor.com/forums/images/graemlins/smirk.gif" alt="" />

Of course this assumes the bird hasn't had sex in a while which could make it much faster given its looking for a mate!

JMO,

Clayton
BS Engineer (and we know what the BS stands for)