Join Date: Feb 2012
Location: New Orleans Louisiana
Thanked 137 Times in 131 Posts
Rep Power: 6
Re: Towed Generator that We Really Need
It's been done. An there are numerous threads here and on other forums detailing it. The issue is they don't really work very well. They do produce power, and lots of it, but lets just look at some issues with doing this.
1) prop size was optimized for pushing the boat, not turning a shaft. Pitch, shape, are backwards from what you really need for a water turbine
2) prop size and pitch are really wrong. First every boat has a different size/pitch prop that was selected to push the boat thru the water at a given speed and absorb a given amount of power based upon the engine of that boat. But most boats are likely to need roughly the same size generating prop, because speeds will be close to the same, and the size of the alternator will be roughly the same.