Search results
Results from the WOW.Com Content Network
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.
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 higher the loading, the more power needed to maintain rotor speed. [3] A low disk loading is a direct indicator of high lift thrust efficiency. [4] Increasing the weight of a helicopter increases disk loading. For a given weight, a helicopter with shorter rotors will have higher disk loading, and will require more engine power to hover.
Although both the 230 and 430 are powered by Rolls-Royce (Allison) 250 turboshaft engines, the 430's engines are 10% more powerful. Other changes include the 1 ft 6 in (46 cm) stretched fuselage, providing for two extra seats, an optional EFIS flight deck, and a choice of either skids or retractable wheeled undercarriage.
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 ...
Loss of tail-rotor effectiveness (LTE) [1] occurs when the tail rotor of a helicopter is exposed to wind forces that prevent it from carrying out its function—that of cancelling the torque of the engine and transmission. Any low-airspeed high-power environment provides an opportunity for it to occur.
In some cases, a shrouded rotor can be 94% more efficient than an open rotor. The improved performance is mainly because the outward flow is less contracted and thus carries more kinetic energy. [6] Among model aircraft hobbyists, the ducted fan is popular with builders of high-performance radio controlled model aircraft.
Data from Jane's All the World's Aircraft 2000/1 General characteristics Crew: 4 Length: 22 ft 0 in (6.71 m) fuselage Height: 10 ft 0 in (3.05 m) to top or rotor head Empty weight: 1,841 lb (835 kg) Max takeoff weight: 2,800 lb (1,270 kg) Fuel capacity: 284 L (75 US gal; 62 Im gal) Powerplant: 1 × Continental TSIO-550 air cooled flat-six piston, 350 hp (261 kW) Main rotor diameter: 42 ft 0 in ...