Hi John You are asking a very difficult question. I looked into the possibility of regeneration but decided to go for a standard prop designed for propulsion. Their is a lot of information on the web about fluid dynamics which dictates blade design whether it is air or water. I am no expert but a blade designed for propulsion/regeneration would be a comprise of efficiency for both propulsion and regeneration. As I mentioned in a previous post the French company Watt&Sea used Hydrogenerators in the 2012-2013 Vendee Globe race with great success. They have done a lot of development and testing since and now claim to have a cruising hydrogenerator which produces power at 2 knots.. These designs are for generation only, as far as I know nobody has been successfully using props for both purposes. The leading wind turbine company Vestas was a partner in the Vendee Globe and I suspect they had at their disposal huge amounts of technical expertise to start development of the blades. Have a look on the Watt&Sea website, maybe the answer is to use a separate prop for generation?
On Sat, Mar 23, 2019 at 12:05 AM John Acord jcacord@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:
Suppose you had a fast sailboat, and didn't need more than just slow speed maneuvering from electric propulsion.. What would be the size and pitch to maximize regeneration?John Acord
Kind regards Mick 0414 264 312
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Posted by: Michael Ryan <mryanqld@gmail.com>
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