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Is an MHRS the same as a heading system?

  1. Jan 28, 2014 #1
    Is an MHRS the same as a heading system??

    I have to answer a question regarding an MHRS (magnetic reference heading system). I cant find much information online at all, though i have blindly stumbled onto heading indicators which rely on flux gates as well as a directional gyroscope.

    Am I reading about the correct thing, or am I way off?

    As far as I can tell, a heading system is made up of four component parts,

    Slaving control compensator unit
    flux gate
    Directional Gyro

    It is used to provide the pilot with heading information with a reference to magnetic north and its advantages/ disadvantages over a stand alone compass are as follows:


    • Does not suffer from dip error.
    • Does not suffer from accelerating error.
    • Less susceptible to deviation error.
    • Able to provide more information/ more comprehensive system.


    • Cost.
    • More components, more prone to a system failure.
    • Subject to gyroscopic errors.
    • Can ‘topple’ during abnormal flying conditions.

    Please excuse my naivety, I am an electrical engineer but have to complete an integrated flight instruments to gain all of my modules.

  2. jcsd
  3. Jun 27, 2014 #2
    I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
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