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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.
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 M 950 is a protoype engine family with a working chamber volume V k of 600 cm 3, designed for automobile use and had, by 1972, not reached the series-production stage. [4] Designed as an engine family, the M 950 was meant to be easily expandable; [5] Wolf-Dieter Bensinger briefly mentions designs with up to six rotors, [6] and notes that a ...
Removed text: Many Quad 4 engines did not see over 120,000 miles (190,000 km) due to connecting rod issues [citation needed].The Quad 4 was plagued with blown headgasket issues almost from the introduction of the engine. The problems primarily arose from the fact that the cylinder head was built from aluminum and the block from cast iron, which ...
Around 2005 [13] –2010, [14] Bell and Boeing teamed up again to perform a conceptual study of a larger Quad TiltRotor (QTR) for the US Army's Joint Heavy Lift (JHL) program. The QTR is a larger, four rotor version of the V-22 with two tandem wings sets of fixed wings and four tilting rotors.
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 ...
Engines with a future planned block 4 upgrade would be expected to deliver nearly 10,000 horsepower (7,500 kilowatts). [19] An ongoing problem with the engines was their propensity for surging or stalling with 68 incidents reported between 2003 and October 2016 though this rate had reduced after the introduction of the Block 3 engine version.
Bell and Boeing have studied larger Quad Tiltrotor (QTR) military models for possible application to the US Army's Joint Heavy Lift (JHL) program. A Quad Tiltrotor is a larger four rotor version of a Tiltrotor aircraft. It has 2 sets of fixed wings and 4 tilting rotors mounted at the tips of the wings.