On Mon, 14 Mar 2005 16:50:34 -0900, "Ron Webb"
wrote:



Ron-Using accelerometers in 3d space will soon become inaccurate due to
small errors in the accelerometers, math rounding errors and drift. How
do you propose to 'erect' such a device to keep the shiny side up?

The only constant acceleration is the acceleration of gravity. A "leaky

How so? the plane doesn't know if it's right side up or not.
You can do a barrel roll, or loop and always keep "down" through the
bottom of the seat.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

integrator" with a 2 or 3 second Tau should work fine.

If it can be done mechanically, it can be done electronically.