Could be but:
1) proper vandals wouldn’t bust their heads doing it
2) they would much prefer nipping swimmers instead for real fun
I thought there have been no cases of wild orcas attacking humans in the water.
From what I gather from the thread so far, 6082-T6 is the way to go.
Cotton flox and add cabosil until it doesn't sag
Wetting out gets you the strength. Filling the weave is cosmetic
If you're considering bike tires and rims, they're not designed for side loads
This corresponds well with observations of gyroplanes that have best L/D of ~4 and for the rotor alone ~7
Google Al Bowers NASA
An alternate view of optimum lift distribution:
Acrylic emulsion paint
It pivots on a pile dolphin[ATTACH]
and stops on another near the opposite shore shown on the right of the transiting boat[ATTACH]
Here's a swing floater. It's registered and classed as well. Floating bridge of Lefkada – video | Go Lefkas | The ultimate tourist guide about...
Reality check point. I think there is no need to ponder this level of complexity now. If you go with a variable pitch, rigid rotor with...
High blade angle of attack stalls the blade. Normally the inner retreating portion of the disc is stalled. By reverse flow in that context I meant...
Then a feathering blade with symmetrical airfoil and heavy construction would be the alternative.
Assuming a relative wind speed of 15 knots and a rotor tip speed of 300 knots, the advancing blade would see 315 knots while the retreating blade...
Gyroplane rotors autorotate and are not connected to the drive train. Thrust is provided by a separate engine driven propeller.
The rotor tip path plane would have to swivel through 360 degrees on an axis parallel to the mast. About 12 degrees angle of attack of the rotor...
The rotor L/D will be closer to 8
Braking the rotor is not trivial. Braking faster than depowering a sail would require massive structure...