Reduced Vibration

Discussion in 'The Chat Room' started by Mark sheldon, Feb 2, 2018.

By Mark sheldon on Feb 2, 2018 at 9:58 AM
  1. Mark sheldon

    Mark sheldon New Member

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    Hi, I’m looking at reducing the overall vibration in a wildcat helicopter for my university course. due to the cost i am obviously unable to use a real life wildcat so am looking to use a radio controlled helicopter to prove my concept works.

    I need to measure the phase of the main rotor head so i can then ensure the dc motor i will use as a “shaker” will be 180 degrees out of phase.
    Having read up on optical sensors and accelerometers I am unsure if this is either feasible or what components would be best to use to obtain this information?

    Thank you in advance for your expert opinion and input,
     

Comments

Discussion in 'The Chat Room' started by Mark sheldon, Feb 2, 2018.

    1. smakmeharder

      smakmeharder Administrator

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      Hi @Mark sheldon, some Gyros that you buy have vibration testers inbuilt. This diagnostic tool is very handy to help isolate vibration issues and will provide an amplitude vibration measurement. Just curiously when you say the phase of the main rotor head and out of phase motor, out of phase in comparison to ?? Usually vibration on a helicopter is limited to x and y plains and can come from a variety of positions - but most commonly the rotor head (usually X vibrations) the tail (usually higher frequency Y vibrations) the drive gears (X) or the motor. So perhaps give us a bit more detail re the phasing (so i can get it through my thick head) and maybe I might be able to assist.
       

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