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Moment of Inertia

Posted by PatrickD on July 30, 2010 at 9:33am
Hi,

Not sure this is the right place to post this, but has anyone calculated/estimated the moment of inertia in pitch (Iyy) of the easystar.

Thanks.

Patrick

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Replies

  • Andrew Rabbitt September 20, 2010 at 1:21am
    It's not too difficult to measure. Google trifilar pendulum and have a browse.
  • T3
    Krzysztof Bosak July 30, 2010 at 9:55am
    I guess: motor+battery 600g average distance 20cm from COG makes 0.6*0.2^2=0.024
    plus styrofoam 300g distance 40cm is 0.3*0.4^2=0.048

    makes 0.072 [km*m^2] total
    estimate +/-50%.
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