Re: Drag at Orbital Altitudes

[EMAIL PROTECTED] (Vincent Cate) wrote in message news:<[EMAIL PROTECTED]>...
 
> The density at 400 km averages about 3.725E-12 Kg/m^3
>        and  at 600 km averages about 1.454E-13 Kg/m^3.
 
>      drag = Cd * dragArea * 0.5 * density * v*v;

> So the density alone gets you a factor of 25.  The velocity is 
> slower higher up to, so you win some from that too.

Excellent. Thanks for the replies.

Next question: how much worse is the radiation environment at 600km vs 400km?

Mike Miller, Materials Engineer