Results of a second test of the 5-blade variable-pitch rotor
Rotor diameter is 410 mm.
Elastic tailoring is 20% more compliant than in the first test, to give 3 degrees more blade pitch-up at maximum torque.
Elastic elements of different spec. are easily swapped.
This test shows rotor speed levelling out at around 3500 RPM as lift continues to increase with power due to increasing blade pitch.
The batteries hold up better than in the previous test. I don’t know why. Perhaps they needed a rest!