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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.
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 ...
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.
In 2014, the fan diameter was increased another 1.5 in (4 cm) to 133.5 in (339 cm), slightly increasing thrust from 102,000 to 105,000 lbf (450 to 470 kN). [4] In 2016, the engine's list price was US$41.4M. [5] The first engine was expected to be ground-tested in 2016, with flight testing to begin in 2017 and certification happening in 2018. [6]
The Block 3 turbine became standard in July 2012 for new production models. By September 2012, all older engines that were undergoing regular maintenance were systematically upgraded to the Block 3 turbine. Engines with a future planned block 4 upgrade would be expected to deliver nearly 10,000 horsepower (7,500 kilowatts). [19]
In 2021, Urban eVTOL announced the Leo, a 3-seat, 250 mph (400 km/h), 300 mi (480 km) vehicle. It hosts 16 40-cm diameter, 10-kw ducted fans for vertical lift, and 6 28 cm diameter, turbine-bladed rear engines for horizontal thrust. The wing is a double box-wing design.
A PW4074 engine had a fan blade failure and associated engine cowl damage as the Boeing 777-200 was climbing out of Okinawa. [18] As of March 2021 the investigation is ongoing. 20 February 2021, United Airlines Flight 328 Boeing 777-200's right hand PW4077-112 had a blade failure shortly after taking off from Denver, causing significant engine ...
Released in 2007 was the new 3,600 lbf (16 kN) thrust FJ44-4. In 2010 this engine was in use on the Cessna CJ4, and since 2018 also on the new Pilatus PC-24.