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Thread: ADF Quadrantal error?

  1. Default ADF Quadrantal error?

    Hey all

    Just curious as to if anyone knows if there is any programe or gauge that can be used with FSX that will simulate quadrantal error when using ADF's...
    Quadrantal error is a HUGE part in navigating with NDB's and it is really annoying that microsoft overlooked this with their design of their ADF's.

    The IFR simulator that I use represents quadrantal error so I know it is possible to simulate but can it be done on FSX?

    Cheers
    Paul

  2. Default

    Reality XP says that their Flightline N ADF works like the real thing.

  3. #3

    Default

    Quadrantal error is caused by the aircraft's electro-magnetic field which deflects the incident ADF radio waves near the ADF receiver aerial. It is thus aircraft dependent.

    I believe modern ADF installations correct for this.

  4. Default

    Regardless of what type of aircraft it is (and yes you are correct about it being aircraft dependant...) you will always have some quadrantal error as the loop antena will always be sheilded in a turn unless it is located well away from the wings. Would be nice if it was simulated in FSX but guess its not

    Typically a light training aircraft or any light twin will have between 5-10 degrees of quadrantil error in a rate 1 turn, I suppose with larger aircraft which can locate the loop antena away from the wings it would be less?

    Here in New Zealand we are phasing out NDB's so people don't really bother with ADF's but I would be interested in knowing what ADF's can account and get rid of quatrantil, because the RMI's that I have used definately dont! Hence the nick name, "Approximate Direction Finder",

    Cheers for the replies tho!

  5. #5
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    Default

    This could be done by programming the ADF gauge to respond, but it wouldn't be as good as having it in the FS core.

    I don't however, know of any gauges that actually do this. The RealityXP gauges may do it, but I don't know.
    I fly through the valley of death, but I fear no evil,for I am at 80,000 feet and climbing. Let's powerdive and scare that poor soul in that Ultralight there.

  6. Default

    Quote Originally Posted by pschaps View Post
    Regardless of what type of aircraft it is (and yes you are correct about it being aircraft dependant...) you will always have some quadrantal error as the loop antena will always be sheilded in a turn unless it is located well away from the wings. Would be nice if it was simulated in FSX but guess its not

    Typically a light training aircraft or any light twin will have between 5-10 degrees of quadrantil error in a rate 1 turn, I suppose with larger aircraft which can locate the loop antena away from the wings it would be less?

    Here in New Zealand we are phasing out NDB's so people don't really bother with ADF's but I would be interested in knowing what ADF's can account and get rid of quatrantil, because the RMI's that I have used definately dont! Hence the nick name, "Approximate Direction Finder",

    Cheers for the replies tho!
    I hope this isn't too bad of a bump, but are you talking about quadrantal error, as in the re-radiating of signals from the aircraft fuselage and components, or are you talking about the error in a bank?

    Because quadrantal error is usually compensated for when installing the instrument as far as I know (theoretical knowledge though, I don't know if this is done always and in what measure it can be compensated for). And since you were talking about turns as well .

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