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#11
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Why The Hell... (random rant)
EridanMan wrote:
Are VOR's all MH based? I was flightplanning the other day (I must be one of the few poor souls left who flight-plans by hand... I guess I just haven't been flying long enough to get sick of it yet, I consider my flight planning to be 'part of the experience') And I got to thinking- Why in gods name are VOR's Mag heading based? It's a nuisance for maintenance, but it frees the pilot from calculating the variation at the operative time. Just to off-load the pilot. I know, ideally, that means that you can sync your DG and your VOR indicator to fly to a waypoint... except that most VOR's around here have long since fallen behind Magnetic drift... so - now, not only do you have to flightplan in True Heading, convert to Mag Heading to get your vectors, THEN you have to get the corrective factor for each of the VOR's your using for navigation and note that as well? huh? If they are off the mag variation, it is mis-maintenance, and the VOR should be marked defective or taken off-line. -- Tauno Voipio, avionics engineer, CPL(A) tauno voipio (at) iki fi |
#12
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Why The Hell... (random rant)
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#13
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Why The Hell... (random rant)
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#14
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Why The Hell... (random rant)
TheSmokingGnu writes:
Nothing about the accuracy of the VOR station itself, though. 1-1-3 (1): Accuracy of better than 1 degree. -- Transpose mxsmanic and gmail to reach me by e-mail. |
#15
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Why The Hell... (random rant)
Tauno Voipio writes:
If they are off the mag variation, it is mis-maintenance, and the VOR should be marked defective or taken off-line. Be careful what you wish for. -- Transpose mxsmanic and gmail to reach me by e-mail. |
#16
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Why The Hell... (random rant)
EridanMan wrote:
Are VOR's all MH based? So that they line up with the compass. All in-flight navigation is magnetic based. |
#17
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Why The Hell... (random rant)
Mxsmanic wrote:
EridanMan writes: I'm sorry... call me lazy, but if your not going to keep them all updated with Magnetic north, then at least stick them on a standard baseline... True North, for example? I think aviation should have started moving towards true north for everything long ago, but that's just me. The constant shifting of the magnetic poles (which is accelerating) means perpetual updates for anything that depends on magnetic north (and you can't use magnetic south, because it isn't even exactly opposite magnetic north). Because we don't have a TRUE NORTH indicator in the cockit. Just a magnetic compass and instruments derived from it. Real flying ain't a stupid-assed computer simulation. |
#18
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Why The Hell... (random rant)
Mxsmanic wrote:
Magnetic south isn't exactly the opposite of magnetic north on the Earth's surface, No you are confused. Magnetic SOUTH is the exact opposite of magentic north you fool. The fact that the MAGNETIC SOUTH POLE is not exactly opposite the MAGNETIC NORTH POLE is a different issue. The fact that the poles aren't aligned with the arbitrary "true" datum just means that the variation equations aren't as simple as they might be. This is why we just resort to looking it up on a chart. Early navigators used it because they had nothing better. Today there are lots of things that are better. Really, like what? Compasses are still damned reliable compared to anything else. Cheap too. The only thing that presumes to do better perhaps is GPS. And it's easier to program that to deal with the magnetic measurements than to try to force everybody else the other way. |
#19
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Why The Hell... (random rant)
"EridanMan" wrote in message oups.com... Why in gods name are VOR's Mag heading based? Tradition. |
#20
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Why The Hell... (random rant)
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