First test of 5-bladed variable-pitch rotor

Ready for first test mounted on measurement rig

See a video of this test at

Test range limited by maximum 190 watts from battery.

The advantages of this design are

1) Extremely quick response. A conventional drone must spin each rotor faster to get more lift, for example to counter a random wind gust.
A drone or aircraft with far quicker response could be used in new ways, such as very close to structures in windy conditions.

2) Low vibration in forward flight. Each lift-rotor blade generates more lift when advancing than when retreating, but in a 5-bladed design, the forces cancel.

3) Low noise. For the same lift and diameter, 5-blades run slower and consequently quieter than 2-blades.

4) Auto-rotation by default. For safety and simplicity, the default blade pitch is negative when not powered. The blade pitch range is readily adjustable to suit application requirements.

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