[ARC5] Testing battleship radios

[Richard Schumann]

OK, after looking more at the picture, I retract my idea of movement and see your point.

I guess what I thought were lateral movement trails are really the crests of the depressions in the water made by the guns as the ship moves forward.

Fun to think about all the different aspects of the physics involved....

Richard  kn7sfz


  ----- Original Message ----- 
  From: J. Forster 
  To: Richard Schumann 
  Cc: arc5 at mailman.qth.net 
  Sent: Saturday, November 03, 2012 10:47 AM
  Subject: Re: [ARC5] Testing battleship radios


  If you mean the white water under the guns, that is an effect caused by
  the gun blast, and is surface only.

  The actual linear motion is calculable from the Conservation of Momentum,
  and a moded of how the ship moves through the water in the direction
  opposite to the gunfire.

  The rolling is calculable from the Conservation of Angular Momentum and a
  roll model.

  Depending on how the guns are aimed, there will be pitch and yaw effects too.

  -John

  ============


  >
  > All calculations aside, the picture here sure looks like the battleship
  > moved in the water when the guns fired.
  >
  > Just my  $.02 worth.
  >
  > Richard kn7sfz in Orygun
  >
  >
  > http://en.wikipedia.org/wiki/Battleship
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