|Topic Review (Newest First)|
|04-15-2011 01:38 AM|
Originally Posted by akashara View Post
America's Cup - AC45 #1 Damaged in Capsize, Crew Safe: Photo Gallery - from CupInfo
Read the story as well as have a look at the pics.
These sails are difficult to manage even in controlled conditions, out there with heavy seas and strong winds a rig like this will be a handfull even for highly skilled racing crew.
And I would venture to suggest that they are probably the most expensive in the world size for size at this time.
|04-14-2011 07:06 AM|
Maybe sth like a disk flywheel. Its also used in some public transport buses for saving energy.
Here is a little update so far:
The yacht will be a charter yacht for 6 persons. The aspect of sharing is more reasonable, and a high building cost doesn't weight that high with a charter yacht.
-therefore it will be a catamaran, since there is a lot more space
- right now we think a lot about the energy problem: a solution seems to be a fuel cell; it has a far higher energy density than batteries or fuel, and is completely without emissions. A fuel cell (in combination with solar panels) could obtain enough energy for a 1-2 week turn. The hydrogen needed could be carried in pressure tanks or bounded in a special granulate (which is safer).
even issues like the cooking gas could be solved with hydrogen.
- an idea was to create the hydrogen needed at the charter base; at the marina could be a device which gets hydrogen through electrolyse (you only need salt water, 2 electrodes and electrical power for it). the power could come from wind generators or from water or wind powerplants near the marina.
- we still stick to the wing sails, and therefore are in contact with two engineers. One from Boeing who helped creating one of the Alinghi Americas Cup yachts, and the other from the HSVA, a German institute for hydro and aerodynamic research.
|04-14-2011 06:09 AM|
Originally Posted by Barquito View Post
Given the concept is used in most hybrid motor cars, it is not that new but how would you do that in a boat?
|04-13-2011 04:02 PM|
Originally Posted by Barquito View Post
|04-13-2011 03:54 PM|
|Barquito||What about a system like what some busses have (and F1 race cars), where energy is stored mechanically in some sort of coil, then released for propulsion?|
|04-13-2011 10:40 AM|
Originally Posted by Omatako View Post
|04-13-2011 05:58 AM|
What do you mean when you define sustainable. Sustainable in its pure form to me means one can carry on doing it forever without any external input. Well, clearly a yacht sailing around the world does not fit that definition because God knows, I pour vast resources into my boat just to keep it functional and I'm no different to most.
If sustainable means that you start off by pouring a mountain of money into a boat and hope that it lasts until you die and don't have to replace anything, then I don't buy the theory. That's like everyone starting life as a billionaire and dying with nothing. Everbody knows that is anti-reality.
OK so realistic sustainability means that we have to continually put some resource into the game but we're going to strive to do that as little as possible and be as green as possible. Well, no secret there - yachtsmen the world over have been doing that for centuries. Some just do it better than others but we all strive for that goal.
But is there a thesis in there somewhere? I think the OP's challenge is going to be making it sound complicated enough - which it isn't.
|04-13-2011 04:14 AM|
Originally Posted by AdamLein View Post
|04-12-2011 06:24 PM|
|mgmhead||The original post reminds me of Steve Martin's bit on how to never pay taxes again... "First you get a Million Dollars!"|
|04-12-2011 04:46 PM|
In other news, batteries are bad for the environment. Not very often, for the average sailor, I admit, but once in a while you have to dispose of some toxic waste. Instead, I propose flywheels! You put a flywheel in a vacuum, suspend it with electromagnets, and spin it up. Much more efficient energy storage than batteries, much lower maintenance, and less harmful waste. For a small sailboat, I suspect some sort of gimbaling system would be in order, otherwise you'd lose a lot of energy to gyroscopic precession. Also not sure what sort of weight we're talking about.
Still, that would be a sustainable yacht project I'd like to see.
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