OTHER: Helicopter - Inside - Intermeshing - Electrotor ~ MicroLite (planetary)

Bill of Material Not yet.

• Rotor-rotor Interaction: from Rotor - Disk - Interaction Forum
• Blades per rotor: 2
• Obliquity: -2º
• Stagger between hubs: 1.76 ft (21")
• Radius of disk: 5 ft. The tip speed is 555 ft/sec with a 5.667:1 ratio (sun 18t, planet 33t, ring 84t) and 6,000 rpm motor.
• Precone angle 6º
• Port rotor azimuth: 126.8º
• Starboard azimuth 216.8

• For additional clearance at the tips only consider; OTHER: ~ Rotor Concept - Intermeshing w/ Curved Dihedral

• Synchronization Methods:
• Use very large 'plastic' gears where the ring gear drives the rotor and the two ring gears are interconnected with external teeth in addition to the internal teeth. This would be a precursor to the slow-speed electric motors.
• Use planetary gearing and double gear-belts mounted to the lower hub-bar on each rotor. The blades must rotate 180º in their travel from sheave to sheave.
• Use crown and pinion and x-shaft with two flexible couplings between the rotors. There will be two pinions for each hub ~~~ unless the motors are mounted outboard of the rotors and the crown gear is mounted on a single bearing (which it will be in any case).

• Cyclic control might work with one central stick (with t-bar handle?) due to the roll linkage.
• Note that on the gyrocopter the mass of the fuselage is slightly ahead of the longitudinal center of the disk. Apparently this is done so that an updraft will tend to pitch the disk downward at the front. It is probably effective for forward flight but might it be detrimental during hover, which a gyro does not experience?

• X-shaft and Lateral Roll Control:
• The two rotor disks are currently shown as being 2º off the horizontal.
• The Dynaflex LCR Series coupling LCR-275-400-004A will handle 12 hp, weighs 0.52 lbs, and has a permissible misalignment of +/- 5º. This means that the inboard rotor disk can only be tilted an additional 3º for roll assistance.
• The Dynaflex LCR Series coupling LCR-275-400-009A will handle 20.4 hp, weighs 0.52 lbs also, but has, a permissible misalignment of +/- 4º. This means that the inboard rotor disk can only be tilted an additional 2º for roll assistance.
• The 3º and the 2º do not make much difference. Perhaps the misalignment can be more for short intervals.
• The Rexnord Omega standard coupling model E2 will handle 18 hp, weighs 1.2 lbs, and has a permissible misalignment of ????

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