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Electric Propulsion
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Brian Whatcott
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Electric Propulsion
On 17 Sep 2003 02:52:45 GMT,
ospam (Stephen Baker)
wrote:
What no-one has considered here is that powering calcs are usually done from
the other point of view:
My boat has X lbs of drag at 5 knots, how many horsepower do I need?
Factor in windage (the lee shore situation), foul hulls, appendage drag, prop
efficiency (an oxymoron if ever I saw one) and other such truck like Taylor
Wake Fraction, and you have a real problem on your hands.
Doing it in reverse? Priceless....
Steve
Once you seize the idea that if a vessel (of any sort) is not
accelerating wrt the water mass, then the total drag = total thrust.
Brian Whatcott Altus OK
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Electric Propulsion