Re: Multi propellers on the same mast

On Thu, 28 Jul 2005 08:19:11 -0600, quibbler <quibbler247@xxxxxxxxx>
wrote:

>In article <nrpce1dh7nv9gc5ahn6ujihb9s5d3hmtq8@xxxxxxx>, Bla@xxxxxxx
>says...
>> I haven't seen more than one propeller on the same mast .
>
>
>There have been such designs proposed, though few have been built. If
>you want to see some really freaky multiblade designs go here:
>
>http://www.selsam.com/
>
>There are more conventional proposals as well. However, in general one
>would only use these if either one couldn't afford to buy a single set
>of large blades, or the materials weren't strong enough to create a
>single blade that was any bigger. The power goes up proportionally
>with the swept area, so, in theory we'd like the radial length to be a
>large as possible.


Quibbler
Lots of information there. Thanks

Vlad
.

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