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#1
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David Koehler wrote:
FYI a magnetometer is a compass for a computer, Aha,I was wondering what this thread was about. I guess it is a matter if definition. The basic definition of a magnetometer as I understand it is to detect and measure magnetic fields. None of the magnetometers I have used were small enough, light enough or logically located in a cockpit. Then again none were connected to a computer. Dan, U.S. Air Force, retired |
#2
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Hi Dan,
this one is fairly small, it feeds a computer for a EFIS system. Grand Rapids uses them on their system. From what I heard once it's setup your finished with it. That sure beats the heck out of adjusting for drift every 15 minutes on a heading indicator. "Dan, U.S. Air Force, retired" wrote in message news:uIrnf.60036$sg5.34729@dukeread12... David Koehler wrote: FYI a magnetometer is a compass for a computer, Aha,I was wondering what this thread was about. I guess it is a matter if definition. The basic definition of a magnetometer as I understand it is to detect and measure magnetic fields. None of the magnetometers I have used were small enough, light enough or logically located in a cockpit. Then again none were connected to a computer. Dan, U.S. Air Force, retired |
#3
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David Koehler wrote:
Hi Dan, this one is fairly small, it feeds a computer for a EFIS system. Grand Rapids uses them on their system. From what I heard once it's setup your finished with it. That sure beats the heck out of adjusting for drift every 15 minutes on a heading indicator. "Dan, U.S. Air Force, retired" wrote in message news:uIrnf.60036$sg5.34729@dukeread12... David Koehler wrote: FYI a magnetometer is a compass for a computer, Aha,I was wondering what this thread was about. I guess it is a matter if definition. The basic definition of a magnetometer as I understand it is to detect and measure magnetic fields. None of the magnetometers I have used were small enough, light enough or logically located in a cockpit. Then again none were connected to a computer. Dan, U.S. Air Force, retired I installed flux valves is extraodinarilly difficult places on some aircraft and amazingly easy on others (if you aren't afraid of heights). I have come to the conclusion there's a conspiracy among the makers of flux valves to have them fail in extremely hot weather, extremely cold weather or when I was the only one left in the shop who has swung one. In the latter case you would have seen some rather large swing crews ![]() MC-1 compass swing set ring a bell, anyone? I wonder if the magnetomer you are using is anywhere near as sensitive to induction as a flux valve. If it isn't I'd say you could get away with mounting it resonably distant from electrical systems. If you have ever seen a mag compass drift when lighting, pitot heat or the like is turned on/off you'll have an idea of what too close is. Other than that I'm not sure what I can do offer. Have you contacted the maker? Dan, U.S. Air Force, retired |
#4
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On larger aircraft they usually call out only non-ferris screws within
about 18" or so, epending on the manufacturer. They are usually in the wing tips about the same distnce from the nav lights and strobes. We swing the compasses when done and adjust them for their location. |
#5
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Don Hammer wrote:
On larger aircraft they usually call out only non-ferris screws within about 18" or so, epending on the manufacturer. They are usually in the wing tips about the same distnce from the nav lights and strobes. We swing the compasses when done and adjust them for their location. Those are the easy ones. Nothing like leaning on a speed handle looking straight down at the ground a dozen feet below. In UH-1P it's in the boom on the other side of a bulkhead from the access panel on the bottom of the boom. Compass swings were quite amusing. Degaussing windscreens in the rain is also fun. As Don said nonferrous screws are the only ones allowed within a specified radius. However ferrous metals do wind up close to mag compasses. I found one aircraft type, I forget which, has the compass light switch right next to it. You guessed it, it ferrous content. Since it was mounted under the compensation magnets I don't think it mattered much, but the compass moved a couple of degrees when the light was turned on. Dan, U.S. Air Force, retired |
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