Today's Message Index:
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1. 07:50 AM - Magnetometers (BobbyPaulk@comcast.net)
2. 11:31 AM - Re: Pitot Heat Ground (Robert L. Nuckolls, III)
Message 1
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When we were building two Zodiacs in the same hangar at the same time we stored
the kit parts on opposite sides of the hangar to keep the confusion to a minimum.
When we were calibrating the remote magnetometer in my plane the compass indicated
230 degrees on a north heading. Nobody could figure it out. Every heading
was over 90 degrees off. I had located the Dynon magnetometer in the tail cone
to get it away from any electrical or RF energy. I finally realized I could move
the compass over 180 degrees by just moving the rudder cables sitting still.
Someone ( ? ) had stored my rudder cables just above a DC welding machine.
Duh! We degauzed the cables as best we could but had to re-locate the magnetometer.
It is now the most accurate compass I have ever flown behind. Near perfect
on any heading.
Bobby
Message 2
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| Subject: | Re: Pitot Heat Ground |
>That doesn't sound right.=C2 The strength of a
>magnetic field should increase linearly with
>current, but should fall off as a function of
>distance cubed.=C2 A 3A current at 5 inches
>should show the same deflection as a 10A current
>at about 7.5 inches, not 14 inches.=C2 Did I miss something?
Nope . . . looks like I punched the 1/sqrt button
instead of 1/3rdrt . . . thank's for the heads-up!
Bob . . .
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