[ARC5] Testing battleship radios

Geoff geoffrey at jeremy.mv.com
Sat Nov 3 15:11:44 EDT 2012


A BB that is 880' long with a draft of 36' does not move water very well at 
the azimuth or elevations the guns are meant to fire.


----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>
To: "Richard Schumann" <richardschumann at comcast.net>
Cc: <arc5 at mailman.qth.net>
Sent: Saturday, November 03, 2012 1:47 PM
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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