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The Chinook is a heavy-lift helicopter that is among the heaviest lifting Western helicopters. Its name, Chinook, is from the Native American Chinook people of Oregon and Washington state. The Chinook was originally designed by Vertol, which had begun work in 1957 on a new tandem-rotor helicopter, designated as the Vertol Model 107 or V-107.
Tandem-rotor helicopters have the advantage of being able to hold more weight with shorter blades, since there are two sets. However, the rear rotor works in the aerodynamic shadow of the front rotor, which reduces its efficiency. This loss can be minimized by increasing the distance between the two rotor hubs, and by elevating one hub over the ...
The Type 173 was a tandem rotor development of the earlier Type 171 Sycamore single-rotor helicopter. It used two Sycamore Leonides Major engine and rotor installations with a new fuselage. [2] The rotor gearboxes were connected by a shaft which enabled one engine to drive both rotors if an engine failed. [2]
The two rotors were synchronised through a shaft to prevent blade collision, allowing the aircraft to operate through only one engine in the event of an emergency. In that case, the remaining engine would automatically run up to double power to compensate. [4] Bristol attempted to market a civilian variant of the helicopter, designated the Type ...
It could also take some helicopter roles by fitting a 600 lb hoist to the ramp and a cabin configuration for 12 non-ambulatory patients and 5 seats for medical attendants. [205] Bell and P&W designed a frame for the V-22 to transport the Pratt & Whitney F135 engine of the F-35. [206] Two CMV-22Bs on the flight deck of USS Carl Vinson in 2023
This is a list of rotorcraft, including helicopters, autogyros, rotor kites and convertiplanes. Lists of aircraft; 0–Ah; Ai–Am; An–Az; B–Be; Bf–Bo; Br–Bz ...
The Hughes XH-17 "Flying Crane" was the first helicopter project for the helicopter division of Hughes Aircraft Company.The XH-17, which had a two-bladed main rotor system with a diameter of 134 feet (41 m), still holds the world record for flying with the largest rotor system.
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]