Peter Popov wrote:
> 
> On Fri, 31 Mar 2000 23:11:20 -0500, John VanSickle
> <van### [at] erolscom> wrote:
> 
> >Close enough for government work.  Take the 2nd derivative of the motion,
> >which will be a vector inward of the curve.  From this subtract a vector
> >representing the force of gravity; since gravity is down, the result will
> >be mostly up, tilted by the amount of acceleration.  Normalize the
> >result.  That's the new "up" vector for the object.
> 
> What do you mean, 'gravity' :) I was talking with spaceships in mind.
> 
> Hope your math works, I'll try it as well.

A moving vehicle needs to bank into turns only if there is an upward force
involved in the turning.  This is indeed the case with airplanes and cars.
Whether it is true for a spaceship depends on how the spaceship is designed.

Regards,
John
-- 
ICQ: 46085459

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