At any rate I believe that electric propulsion is not viable with out substantial electrical production at least 50% over power requirement for cruise speed, the more sources the better, however using electric motor straight on shaft saves on maintenance and weight.
BAE is great in making power management controlling production as needed and managing changing from multiple sources. Siemens makes great motors and controllers. Neither of them are in batteries but that's where Corvus-energy.com comes in with exellant lithium based energy storage system. When products from all three come together that is robust and dependable for ie. the 80' cat that was asking (maybe in different thread) but this is shurely over the top for replacing <50 hp engine.
But lot can be learned from tease three big expensive, even that I find Corvus batteries not that expensive at 4x regular AGM not limits on chagring or discharge 10 year guarantee etc. Batteryes alone are not enough they need generators, solar, wind or propeller under sail. Weight and cost is not going to allow us to go electric only, hybrid is the only functional way generator charging uses fuel with highest efficiency and stores to batteries. Battery energy can be used in other proportion than the production, that is the key in why it's sensible. By selecting battery size and generation / charging using multiple sources and good control preferrably automatic will give amazing economy better than either one on their own, even expenses can be manageble, crusing for more than 1-2 hours on batteries with out changing capability is in my opinion impractical.
Unlikely, imho, ime, but if it did happen, that would be great.
If it does not happen, this year the new 330W/kg batteries will start to be made by Tesla.
Others will soon come along.
Within 5 years, some type of (lion, most likely) batteries will be the tech of choice, as-is, where-is, no cold fusion needed.
On 04/08/2016 16:20, Stefán Brandur Jónsson stefan@martolvan.is [electricboats] wrote:
Then there is the real issue that makes electric propulsion the more sensible option than regular diesel or petrol.In about 3 years we wont need either batteries or Gen sets since as we speak first cold-fusion energy modules that will not need charging and last as an energy source for years.But that will use electricity to move things, having that part already will help.
-- -hanermo (cnc designs)
Posted by: =?UTF-8?B?U3RlZsOhbiBCcmFuZHVyIErDs25zc29u?= <stefan@martolvan.is>
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