RE: RE: [FT] Orbit and FT

Randy W. Wolfmeyer wrote:

>Over the poles, you just have to use thrust to counteract the
acceleration
>of gravity,

That's what I suspected.

so if you want to maintain an altitude of 2*radius of earth
>about pole, you need to be able to use thrust that would provide 1/4 G.
>(gravity goes as 1/r^2).

How does this compare to the required velocity for an orbit at the same 
altitude?

Not over the poles gets a little more
>complicated because you have to counteract gravity and provide a
>rotational velocity that matches the rotation below.

Ostensibly, you should be able to give yourself a nudge for the
rotation, 
and only continue thrust for the lift.	The added velocity may even
reduce 
the amount of lifting thrust necessary, but that's just a guess.

2B^2

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