Electrotor-SloMo - Rotor - Hub - Torque-Pitch-RRPM

DESIGN: Electrotor-Simplex ~ Rotor - Hub idea, which eliminates the lag coupling.

See; OTHER: Miscellaneous - Thoughtless Ideas - Torque/Pitch Collective Rotor Hub

• Another concern is that the distance between the link pins of the two blades will vary as the blades sweep. This is because the elevation of the pins is changing slightly. This will result in the span axes of the two blades not always being aligned.
• The angle will be approximately twice that of the pitch change. If the arms to the link rods are short then the angle (length change will be less] and conversely long arms will give a larger angle. Opposing this is that short arms will put stronger loads (tension) on the link rods.
• The rods could have an elastic composition (fiberglass tow) and used to take some of the load of off of the lead/lag-pitch hinges.

• Also see; ~ DESIGN: ~ Electrotor - Control (flight & power). The information on these 2 pages will probably be combined.
• Transmission of torque from the Motor to the Rotorhub: This consists of an arm from the OD of each of the two motor's rotors to the rotorhub. These arms are located above the motor and below the rotorhub. It transmits the torque from its respective rotor to the hub.
• Collective: Each of the two arms is located directly below a blade grip. As the torque of both of the motor's rotors increases the arms will flex slightly in the plane of rotation. This is because the arm is constructed from a fiberglass composite. The outer end of the arms will be at a more advanced azimuth than their inner ends because the motor is advancing the outer end while the drag of the blades is resisting. The bottoms of the blade grips are interlocked with the outer end of their respective torque arms. The fact that the motor's rotors are rotationally ahead of the root of the rotor hub will result in a rotation of the blade grips and this in turn results in an increase in the blade pitches.
• Cyclic: The increasing of power in one stator and the decreasing of power in the other stator will result in a differential of pitch between the two blades. If the torque is temporarily increased when the blades are at 270º azimuth and decreased when the blades are at 90º azimuth then the rotor disk will tip down at the front.
• Rotor Synchronization: Increasing the power on both halves of one rotor's motor and decreasing it on the other rotor's motor will cause the first rotor to accelerated while at the same time the other rotor is deceleration. Unfortunately, this will first change the pitch between the two rotors. Hopefully. An accompanying change in the lateral pitch of the two rotors will overcome this problem.
• Adjustment: The 'springiness' of the arm will be ground adjustable so that there is equality between the two rotor disks.
• Basic Operation: Increasing the power to a motor will increase the torque of the motor. This torque will cause an increase in the pitch of the blade, which is connected to that motor. At the same time the rpm of that rotor will start to increase and this increase in speed, over a short period of time, will cause the pitch to reduce until the rotor settles at a higher rpm with a greater blade pitch.
• In other words; increasing power on both halves of a motor will increase the collective pitch and then it will increase the RRPM.
• Reference for related information; Auto-Collective Rotor Hub 0575
• Consider transmitting all of the torque to the rotor via the pitch arm. The reason for considering this is that the this strong torque and strong opposing elastomeric will minimize, or totally eliminate, any chance of undesired pitch change coming from perturbations.

• To control the rate of pitch change.
• Adjustment: The rate of flexure dampening will be ground adjustable so that there is equality between the two rotor disks.

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