Lift tests were completed for variants of the optimized rotor design to check that 3-D viscous effects were not reducing the lift at a given twist angle. 2 new rotors with an additional 2 deg and 4 deg of pitch were constructed and tested. Little additional lift was obtained. New Material for Rotors Shelly has made new rotors using while and yellow polycarbonate as well as epoxy. These rotors are much more flexible, but more durable as well.
Further testing is needed.
Scott will get enough of each size to test them as a group with material removed. Subsequent tests suggest that they have sufficient current to power the mesicopter prototype. To determine the motor torque so that we can calibrate the rotor performance code, Ilan proposed spinning disks for which a closed form solution for torque is available. Scott built some of these and started the tests. I and many people are contributing.