For an equal area the high aspect will produce more lift relative to drag and that lift will be achieved at a lower angle of attack.
If they are close together then they will interfere with each other. In this case they work through a wider range, will give higher lift at higher angle of attack but at the cost of higher drag.
Rick Willoughby
On 04/11/2009, at 1:58 AM, Arto Hakkarainen wrote:
--- On Tue, 11/3/09, Mike Crawford <jmichael@gwi.net > wrote:
A question for anyone skilled in fluid mechanics: would two higher-aspect keels or mini foils be better than a single lower-aspect keel? I'm told the twins would generate more lift, but don't know if that's true or not.
Also, how deep? My guess is that 300-450 mm would be enough to help handling without being too obtrusive.
- Mike
Rick Willoughby
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