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2. Dual-rotor motor - Wikipedia

   en.wikipedia.org/wiki/Dual-rotor_motor

   It shows two rotors assembled into a single unit, with eight permanent magnets attached to the outer surface of the inner rotor, and eight to the inner surface of the outer rotor. [5] Vendors are working on both axial [6] and radial flux configurations. [7] In one axial flux design, the rotor is a disk that sits between two symmetric rotor ...

3. Coaxial-rotor aircraft - Wikipedia

   en.wikipedia.org/wiki/Coaxial-rotor_aircraft

   Rotor blades provide lift proportional to the amount of air flowing over them. When viewed from above, the rotor blades move in the direction of flight for half of the rotation (advancing half), and then move in the opposite direction for the remainder of the rotation (retreating half). A rotor blade produces more lift in the advancing half.

4. Tandem-rotor aircraft - Wikipedia

   en.wikipedia.org/wiki/Tandem-rotor_aircraft

   This is commonly accomplished by a tail rotor, coaxial rotors, and the NOTAR systems. Tandem-rotor helicopters, however, use counter-rotating rotors, with each cancelling out the other's torque. Therefore, all of the power from the engines can be used for lift, whereas a single-rotor helicopter uses some of the engine power to counter the ...

5. Transverse-rotor aircraft - Wikipedia

   en.wikipedia.org/wiki/Transverse-rotor_aircraft

   A transverse-rotor aircraft is an aircraft with two large horizontal rotor assemblies mounted side by side. Single-rotor helicopters (unicopters) need an additional tail rotor or tail exhaust to neutralize the reactional angular momentum produced by the main rotor. Transverse rotor helicopters, however, use counter-rotating rotors, with each ...

6. Rotorcraft - Wikipedia

   en.wikipedia.org/wiki/Rotorcraft

   Three rotors. An uncommon configuration; the 1948 Cierva Air Horse had three rotors as it was not believed a single rotor of sufficient strength could be built for its size. All three rotors turned in the same direction and yaw compensation was provided by inclining each rotor axis to generate rotor thrust components that opposed torque. Four ...

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   mail.aol.com

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8. Intermeshing-rotor helicopter - Wikipedia

   en.wikipedia.org/wiki/Intermeshing-rotor_helicopter

   An intermeshing-rotor helicopter (or synchropter) is a helicopter with a set of two main rotors turning in opposite directions, with each rotor mast mounted with a slight angle to the other, in a transversely symmetrical manner, so that the blades intermesh without colliding.

9. Stanley recalls 2.6 million mugs after reports of burns from ...

   www.aol.com/stanley-recalls-2-6-million...

   Stanley is recalling 2.6 million mugs sold in the U.S. after the company received dozens of consumer complaints, including some users who reported getting burned and requiring medical attention ...