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Simple string used as artificial horizon?
T8 wrote:
He then mentioned that way back in the early days of flying they would simply tape a string hanging from the ceiling to act as an artificial horizon. It's not April 1 already is it? Just put a mark on your canopy and spit at it. If spit flies left of target, you are turning right and vice versa. -T8 NOW you're talking. There was a D-I_Y autopilot design which used a blower tube streaming air onto four thermistors arranged pairwise-differentially. This gave pitch rate and yaw rate, or if mounted skew, inputs on all three axes. These days, a three axis acceleraometer goes for $25 and rate sensors for a little more... One well known Arduino project ["ArduPilot"] offers the guts of an autopilot suitable for driving R/C servoes, which will easily fit in a medium size model plane. I expect this could easliy fit in a homebuilt... Brian W |
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