Homebuilt Coaxial Helicopter (RELOADED)

thjakits

Newbie
Joined
Mar 17, 2020
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5
Location
Panama
There was a LOT of discussion going on here - and then it suddenly stopped - is there still a discussion or are we just the jokers here?
 

hillberg

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May 24, 2010
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Low Earth Orbit
yaw will suffer control reversal in autorotation - other then that it look good

Yaw drag flaps on the tips will do nicely (QH 50 style)
 

okikuma

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Joined
May 21, 2006
Messages
1,943
Location
Santa Clarita, CA
Yes, drag flaps would work nicely IF there's a differential. I suspect that is not in this case because of the chosen method of yaw control. Searching the net, I see most amateur coax designer/builders use this method for equalized counter-rotation.

I can't get over how small the diameter is for both rotors.

Wayne


 
Last edited:

hillberg

Active Member
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May 24, 2010
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Location
Low Earth Orbit
Yaw flaps will always work. the gearing of a coaxel is not a limiting design feature nor a dynamic or static mas, if you put a fixed set of flaps above and a movable set on the lower blades.

what you show is powered lift with very high disk loading and two rotors way way too close to each other......😧
 
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