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Hall effect in free air

Discussion in 'Electronic Basics' started by John, Nov 28, 2004.

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  1. John

    John Guest

    Hi.
    I need to find a way to enable a parachute deployment timer on a model
    rocket, and was wondering what the free air and higher (1-10) G effects
    would be on a normal hall effect sensor.
    Thanks.
     
  2. CFoley1064

    CFoley1064 Guest

    Subject: Hall effect in free air
    Hi, John. Hall effect sensors are used extensively in automotive and other
    environments where moderate shock/vibration requirements are a consideration.
    You shouldn't have any problem with this.

    Good luck
    Chris
     
  3. Gary Lecomte

    Gary Lecomte Guest

    If you are meaning any changes to Magnetic Effects, I really doubt any.
     
  4. John

    John Guest

    Thanks Chris.
    I guess the only way is to load it as a payload for test and see what the
    effects will be before I commit it to actual work.
    John.
     
  5. Rich Grise

    Rich Grise Guest

    If you're expecting to time your parachute deployment based on G effects,
    I suggest you go to the library and look up a book on model rocketry.

    Do you expect your rocket to coast to any appreciable experimental
    altitude before deploying the chute?

    Then you're going to wind up with a timer, no matter what kind of G sensor
    you use, because as soon as the motor is done firing, the whole rocket is
    in zero-G. This is also known as "free-fall."

    And putting some kind of sensor to electronically determine when the
    rocket motor is done firing is kind of dumb, considering you can get
    rocket motors with a timed "after-charge", designed for doing stuff like
    deploying parachutes.

    Good Luck!
    Rich
     
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