S_Hub_T

Rotor - Hub - 2-blade Teetering - Assembly

Rotor - Hub - 2-blade Teetering - Adapter

Rotor - Hub - 2-blade Teetering - Grip

Rotor - Hub - 2-blade Teetering - Yoke

SynchroLite ~ Rotor - Hub - 2-blade Teetering

Overview:

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

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".

Working Papers:

DESIGN:

B185

MAKE:

B234

Items:

DESIGN:

Name	Item
Rotor - Hub - 2-blade Teetering - LAYOUT	0088	(for 0306 & ????)
Rotor - Hub - 2-blade Teetering - Droop Stop	0752
Rotor - Hub - 2-blade Teetering - Bearing - Pitch	0767
Rotor - Hub - 2-blade Teetering - Tension Torsion Strap	0804	Possible for future
Rotor - Hub - 2-blade Teetering - Teeter Bearing & Axle	0991
Rotor - Hub - 2-blade Teetering - LAYOUT - w/ Coning Hinges	0813	Alternate to 0088 ?
Rotor - Hub - 2-blade Teetering - LAYOUT - w/ Common Axis	0843	Alternate to 0088 ?
Rotor - Hub - 2-blade Teetering - 2-blade - CVJ+HS	0837

MAKE:

BUY: Only items that have notes or a drawing are listed. See appropriate BOM for complete list.

	Name	Item
	Bearing - Ball - Angular Contact 40 degrees	0988

OTHER: An idea that might be applicable

	Name	Item
	OTHER: Miscellaneous - Thoughtless Ideas - Auto-Collective Rotor Hub	0575

Same Page ~ Different Craft: ~ Dragonfly ~ UniCopter

Last Revised: May 12, 2008