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The two rotors are linked by a transmission that ensures the rotors are synchronized and do not hit each other, even during an engine failure. [ 2 ] Tandem-rotor designs achieve yaw by applying opposite left and right cyclic to each rotor, effectively pulling both ends of the helicopter in opposite directions.
The Kaman HH-43 Huskie is a helicopter developed and produced by the American rotorcraft manufacturer Kaman Aircraft. [2] It is perhaps most distinctive for its use of twin intermeshing rotors, having been largely designed by the German aeronautical engineer Anton Flettner.
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.
The Kellett XR-8 (later redesignated XH-8) was a helicopter built in the United States during World War II.It was a two-seat machine intended to demonstrate the feasibility of a twin-rotor system and, while it accomplished this, it also demonstrated a number of problems that prevented further development of this particular design.
Tandem rotors are two rotors—one mounted behind the other. Coaxial rotors are two rotors mounted one above the other on the same axis. Intermeshing rotors are two rotors mounted close to each other at a sufficient angle to let the rotors intermesh over the top of the aircraft. Another configuration—found on tiltrotors and some early ...
The H-3 was a two-seat general purpose helicopter. It had a duraluminium tube superstructure, an open cockpit and landing gear of metal skids. The design is typical of ultralight helicopters of the period, being powered by tip-jets — two ramjets, one at the tip of each rotor blade.
In Sunday’s The Walking Dead: The Ones Who Live, Rick and Michonne, having just plummeted from a helicopter in the middle of a raging storm, hashed out their differences in a post-apocalyptic ...
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 cancelling out the other's torque. Counter-rotating rotor blades also won't collide with and destroy each ...