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A coaxial-rotor aircraft is an aircraft whose rotors are mounted one above the other on concentric shafts, with the same axis of rotation, but turning in opposite directions (contra-rotating). This rotor configuration is a feature of helicopters produced by the Russian Kamov helicopter design bureau.
The CoAX 2D/2R was originally known as the FLIP 2 (Fly In Perfection) and is a derivative of the FLIP 1, a conventional helicopter with a main and tail rotor.[1]The CoAX 2D/2R was designed to comply with the European Class 6 microlight helicopter rules, including the category's maximum takeoff weight of 450 kg (992 lb).
Agricultural coaxial heli China [21] Red Coaxial Helicopter China Coaxial Single Seater [22] White Coaxial Chopper China Coaxial Single Seater [23] Homebuilt Coaxial Heli China Coaxial Single Seater [24] Yellow tail coaxial heli China [25] Famà Kiss 209: Italy Sk-1 Twinpower Italy [26] G-250 Eagle: Italy Engine Turbine LCA LH 212 Delta: Italy ...
The aircraft had a standard empty weight of 240 lb (109 kg). It featured two coaxial main rotors, a single-seat open cockpit without a windshield, skid-type landing gear and two twin-cylinder, air-cooled, two-stroke, dual-ignition 50 hp (37 kW) Hirth 2706 engines. [1] The aircraft fuselage was made from welded steel tubing. Its 13.5 ft (4.1 m ...
A Lama V3 model helicopter, with a simplified coaxial rotor system. A recent innovation is that of coaxial electric helicopters. The system's simple direction control and freedom from torque induced yaw have, in recent years, made it a good candidate on small models for beginner and/or indoor use.
The Rotorfly R-30 helicopter is a coaxial helicopter with two two-blade fiberglass rotors. The control rods of the upper main rotor are located inside the shaft which reduces turbulence, It has been described as a hingeless teetering blade mount. [2] The aircraft claimed to be very quiet in general. [5]
Sikorsky developed the X2 helicopter on a $50 million budget. The design includes expertise gathered from several earlier design projects. The S-69/XH-59A Advancing Blade Concept Demonstrator had shown that high speed was possible with a coaxial helicopter with auxiliary propulsion supplied using two jet engines, but that vibration and fuel consumption was excessive; [2] [3] [4] the Cypher UAV ...
The coaxial rotor design was chosen because with the rotors turning in opposite directions the torque from one rotor was canceled out by the torque produced by the other rotor. The two twin-bladed rotors made of metal were shaped like arrows and incorporated both cyclic and collective pitch blade control, with which movement around the pitch ...
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