B535

DESIGN: SynchroLite ~ Rotor - Hub - 2-blade Teetering w/ Control Power

Notes:

Teetering hinge, with 15º offset (delta-3); to handle led-lag between the two pairs of blades.

Coning angle: - 1.8706 degrees; based on Option 2 and tip weight of 0.75 lbs.

Undersling (teetering hinge height): - 1.2343".

Information on the two mechanisms that generate the moment at the hub;

Information on the mechanism that converts the 2P oscillation to a constant moment.

DESIGN: SynchroLite ~ Rotor - Hub 2-blade Teetering - 2P Vibration Cam Damper ??????

Concern:

If there is any desire to implement this 2-blade teetering rotor, review and very very likely change the delta3 from Flap Hinge Geometry to Control System Geometry. The long masts may accommodate the oscillation resulting from the opposing cyclical Corollas (Hookes joint) effect of the two rotors. However, having them also accommodate for the opposing lead/lag, due to the Flap Hinge Geometry, is asking too much. For more information on this subject see 0941.html and 0433.html.

This does not involve a lot of work.

Could consider replacing the 2-blade teetering hinge with a 2-blade CVJ hinge and significantly reduce the cyclical Corollas effect. This will allow for much shorter masts. S_Hub_CVJ.html

Last Revised: May 13, 2008