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A quadcopter, also called quadrocopter, or quadrotor [1] is a type of helicopter or multicopter that has four rotors. [ 2 ] Although quadrotor helicopters and convertiplanes have long been flown experimentally, the configuration remained a curiosity until the arrival of the modern unmanned aerial vehicle or drone.
The conceptual design featured a large tandem wing aircraft with V-22 type engines and 50-foot (15 m) rotors at each of the four wing tips. The C-130-size fuselage would have a 747-inch (19.0 m) cargo bay with a rear loading ramp that could carry 110 paratroopers or 150 standard-seating passengers.
In 2013, Bell introduced the 412EPI, which includes an electronic (digital) engine control for a PT6T-9 engine upgrade and a glass cockpit display system similar to the Bell model 429. Also featured is a Garmin touchscreen navigation system, and the BLR Strake and Fast Fin upgrades for improved hover performance. [ 4 ]
Doman Helicopters [4] Enstrom Helicopter Corporation [49] Erickson Air-Crane; Fairchild Aircraft [50] FH1100 Manufacturing Corporation; Glenview Metal Products; Goodyear [4] Gyrodyne Company of America [51] Higgins Industries (defunct) – no longer produces aircraft; Hiller Aircraft [51] Hillman Helicopter [52] Hughes Aircraft [53] Kaman ...
Two-seat variant powered by a 115 hp (86 kW) Rotax 914, 115 hp (86 kW) Subaru EA-81 automotive conversion, or similar engine. Four flying by 1998. [2] [3] Rotor Flight Dynamics Dominator UltraWhite A lightweight version of the Dominator without any fairing and powered by a 50 hp (37 kW) Rotax 503 two-stroke. [4] Rotor Flight Dynamics Dominator ...
Twin rotor: Experimental: August 1955: Prototype: 2: Originally designated XH-33. [7] Bell XV-15: US: Twin rotor: Experimental: May 1977: Prototype: 2: Developed into V-22 Osprey. [8] Bell X-22: US: Quad fans: Experimental: May 1977: Prototype: 2: 4 tilting ducted fans powered by 4 turboshaft engines Bell Boeing V-22 Osprey: US: Twin rotor ...
In 1974, the company eliminated the 2-cycle engine and, unable to find a manufacturer to make their 4-cycle engine suitable for the helicopter, began production of their own engine. This engine, called the RotorWay RW133 , was a 4-cycle engine that was able to provide a cruise speed of 80 mph (130 km/h) with a range of 120 miles (193 km) and a ...
The engines drive a fully articulated four-blade rotor system. [16] Over time, more advanced rotor blade designs have been progressively adopted for the AW109's main and tail rotors, such as composite materials being used to replace bonded metal, [ 17 ] these improvements have typically been made with the aim of reducing operating costs and ...