Because our final goal is a full demonstration of cyclic control and lift control we tried to improve the results from the first trial. The result is a rotor design that can be driven by a motor. The Lift and two cyclic controls are realized using worm gears . This model could be used as a directionable fan. However, the rotation speed is not very high.
The following three images show more details. The elastic string provides a downward pressure on the blades.
The design for the transmission was found on LEO & LEGO
We are currently doing experiments with an improved control
for the last design and designing a new balance to demontrate lift, landing
and cyclic control.
This month, september 2002, I discovered a very beautifull model
Crawford that shows all the controls! Why haven't I seen his model earlier