air multiplier quadcopter
I havent been in this forum for a while and the 2 posts that had been updated since I was here last were the ais-multiplier thread and the quadcopter thread. I wonder if we could make a super...
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now that would be cool. I wonder if we could make the quad copter powered by a single fan in the middle blowing air into four air multiplier ducts.. then control the thrust of each by managing the...
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... but then you'll need a more powerfull motor and bigger blades and 4 servos controlling the ducts - this will make your copter heavier than with 4 motors on the outside. Some twenty years ago I've...
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Well maybe the air multipliers will Compensate for the power loss you get from channeling air through ducts... Although I kinda doubt it. Well even if you did have the same number of fans it would...
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... oh, it's working - in the 50-ies the US-army built some 'flying discs' with a propeller in the middle and ducts feeding the air around. But then drop the design for common helicopters ...
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however in the 50s they didnt have tiny computers to control the duct apertures like we have now. Perhaps with computer control an unstable and difficult to control aircraft like that could be a lot...
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One thing to realize here is that the more mass you push off from, the less Force/Power you can potentially get! F= ma, E= mv^2/2, so P=dE/dt = mva , so F/P = ma/mva = 1/v, that is equivalent to...
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