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#18
March 17th 05, 04:43 AM
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The only constant acceleration is the acceleration of gravity. A "leaky integrator" with a 2 or 3 second Tau should work fine. 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 Roger That's a good question. I have run every other scenario over in my mind, and it looks to me that the proposed system should deal with them under any normal circumstances. However, I had not considered a constant acceleration "barrel roll" while maintaining the same heading. How to sense that??? My original idea had included an electronic "Gyroscpe" I had eliminated it when I discovered how hard the iMEMS ADXRS300 http://www.analog.com/en/prod/0,,764...S300%2C00.html are to get, but I may have to put it back. A homemade version is available. http://home.comcast.net/~scottxs/pie.../piezindex.htm 
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