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 ...
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.
Data from Jane's All the World's Aircraft 1948 General characteristics Crew: Two pilots Capacity: 10 troops or 1,100 lb (500 kg) of cargo Length: 28 ft 8 in (8.74 m) (fuselage length) Height: 13 ft 9 in (4.19 m) Empty weight: 8,200 lb (3,719 kg) Gross weight: 11,000 lb (4,990 kg) Powerplant: 2 × Continental R-975 -15 nine-cylinder radial engines, 525 hp (391 kW) each Main rotor diameter: 2 × ...
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 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]
According to newer Russian sources, only 35 series helicopters were built in 1956–1958 in Leningrad, in addition to two prototypes and three pre-series helicopters (1953-1958). [10] All sources agree that production of the Yak-24 was curtailed due to technical problems, and the need for a heavy transport helicopter was fulfilled by the ...
The first aerobatic manned drone, as this type of electrically powered multi-rotor helicopter is known, had 12 rotors and could carry 1-2 people. [37] Manned drones or eVTOL as they are called typically multirotor designs powered by batteries gained increasing popularity and designs in the 2020s. [38]
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]