How to determine E Power size on Twins...
02-13-2009 | 06:09 PM
#1
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From: Annapolis,
MD
How to determine E Power size on Twins...
Does the same formula work for twins/multi engine aircraft with Brushless Electric Motors? Say using 100 Watts per/lb (just multiply the watts by 2) or is there other considerations...? ie... 10lb Grumman Goose=1000Watts so, 2 motors 500 Watts each?
Thanks
Thanks
02-14-2009 | 04:23 PM
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From: Gothenburg, SWEDEN
RE: How to determine E Power size on Twins...
From what I´ve heard, a twin need only 2/3 of the power required for a single engine plane.
This because on a twin the propeller streams over the wings are more aerodynamically efficient
Here´s an old video showing my plane flying with 57 watts/lb (2x800W/28lb)
The performance is not great but good enough for scale flying
[link=http://www.youtube.com/watch?v=00oKuXjfxZI]Shrike [/link]
