Search results
Results from the WOW.Com Content Network
Disadvantages of the tandem rotor system are a complex transmission [1] and the need for two large rotors. 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 ...
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 McDonnell XHJH Whirlaway, aka McDonnell Model 37, is a 1940s American experimental transverse-rotor helicopter designed and built by McDonnell Aircraft Corporation for the United States Navy and was the largest helicopter at the time, as well as the first successful twin-engined twin-rotor helicopter in the world. [1] [2] [3] [4]
It had an enclosed structure for one pilot and an 85 hp (63 kW) radial engine driving two rotors, each rotor fitted to a short boom on each side of the fuselage. It had a fixed tricycle landing gear. The H-2 first flew on 2 November 1944 and the company was awarded a development contract by the United States Army.
The Mk 1 and Mk 2 prototypes were fitted with two 9-cylinder Alvis Leonides 73 engines, each rated at 550hp (410 kW) [6] The company received a contract for three evaluation helicopters from the Ministry of Supply , these improved Type 173 Mk 3 had four-bladed rotors, a taller aft pylon for improved efficiency in gusty air, stronger airframes ...
The twin intermeshed rotors of this design The prominent exhaust tube the turbine powered version HOK-1 with SS-11 (M22) missiles. The design had two main rotors, each with two blades, the blades were made primarily of wood and the two main rotors were linked by a transmission to keep them synced correctly. [8]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
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.