The autodynamic head is the way of acheiving jump take off without any additional pitch variation. The way it works is very simple: When a torque is applied to the rotor, the blades rotates around their drag hinges in the opposite direction to the rotor rotation from 5° to 10°. If now you are using a drag hinge that is not perpendicular to the blade axis oriented in the way of having a blade pitch decrease when the blade moves downward, you are able to spin up your rotor at a speed that can exceed the flying speed without having any lift (ideally, the blade pitch would be the one of no lift during spin up). When you release the clutch, the blades takes their normal flying pitch by release of applied torque, and excess of speed converted into lift and the gyro can make its jump.

I will start by designing the driving system and the clutch, during the winter, and the complete autodynamic head in a second phase. If nobody tried this before, it will be just more difficult to experiment this...[&o]

Norbert