The Curtiss-Wright X-19, company designation Model 200, was an American experimental tiltrotor aircraft
of the early 1960s. It was noteworthy for being the last aircraft of any kind manufactured by Curtiss-Wright.

Curtiss-Wright X-19,
company designation Model 200
"1963"

RoleExperimental VTOL aircraft
National originUnited States
ManufacturerCurtiss-Wright
First flightNovember 1963
StatusCancelled
Number built2

 

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Curtiss-Wright X-19,
company designation Model 200
"1963"

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Curtiss-Wright X-19,
"1963"

Design 

In March 1960 the Curtiss-Wright Corporation developed the X-100, a prototype for a new, vertical takeoff transport aircraft. The X-100 had a single turboshaft engine, which propelled two tilting-propellers, while at the tail swivelling nozzles used the engine’s exhaust gases to give additional control for hovering or slow flight. Although sometimes classified as a tiltrotor aircraft, the design differed from the Bell VTOL XV tiltrotor designs. The X-19 utilized specially designed radial lift propellers, rather than helicopter like rotors, for vertical takeoff and augmenting the lift provided by the wing structures.[1]

From the X-100 Curtiss-Wright developed the larger X-200, of which the United States Air Force ordered two prototypes designated the X-19A.

The X-19 had fore and aft high-mounted tandem wings. Each wing mounted two 13 ft (4.0 m) propellers that could be rotated through 90 degrees allowing the aircraft to take off and land like a helicopter. The propellers were driven by twin Avco Lycoming T55-L-5 turboshaft engines mounted in the fuselage

Operational history

 

The first flight of the X-19 took place in November 1963 (other sources give 26 June 1964). It was intended that the X-19 would be developed into a VTOL transport aircraft. However the first X-19 was destroyed in a crash on 25 August 1965, with no loss of life, and the program was subsequently cancelled; the second prototype was never completed.[3] The second X-19 prototype is currently being stored in the restoration facilities at the National Museum of the United States Air Force in Dayton, Ohio.[4]

The power transmission, power to weight requirements, flight mode transition and multi-axis control make VTOL aircraft design far more problematic than conventional fixed wing and even helicopter design. Like most pioneering tilt aircraft, the aerodynamic complexity of coupled pitch, roll, and yaw, and torque, particularly in transition from vertical takeoff to horizontal flight, made the design extremely challenging. Ultimately, weaknesses in the power transmission gear boxes led to failure. Owing to design complexity, tiltrotor VTOL aircraft did not enter operational service until the Bell-Boeing V-22 Osprey introduction in 2007.

The American armed forces had expressed an interest in this formula for reconnaissance, transport and tactical support, but the X-19‘s per-formance in the airplane mode was not brilliant. Despite a maximum cruise speed of 650km/h, its payload capacity was less than 550kg. The first pro-totype was quite badly damaged on its second flight in November 1963 and the second was never flown.

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Curtiss-Wright X-19, Model 200 "1963"

The Curtiss-Wright X-19 started life as a commercial venture to develop a small, 4-passenger, executive VTOL aircraft that would have good high speed performance. Funded initially by Curtiss-Wright, it was designated the M-200 (references vary, some calling it the X-200). The M-200 was a very innovative aircraft with which Curtiss-Wright would attempt to re-enter the aircraft business. Unfortunately, it proved to be their last try.

Specifications

Crew: 2
Capacity: 4 pax / 5,000 lb (2,300 kg) maximum
3,910 lb (1,770 kg) VTOL
Length: 44 ft 5 in (13.54 m)
Wingspan: 23 ft 6 in (7.16 m) rear wing
Width: 34 ft 6 in (10.52 m) propeller tip to propeller tip on rear wing
Height: 17 ft 0.25 in (5.1880 m)
98.5 sq ft (9.15 m2) rear wing
Empty weight: 9,750 lb (4,423 kg)
Powerplant: 2 × Lycoming T55-L-7 turboprop engines, 2,650 shp (1,980 kW)

Maximum speed: 400 kn (460 mph, 740 km/h) at 20,000 ft (6,100 m)

Cruise speed: 347.6 kn (400.0 mph, 643.8 km/h) at 15,000 ft (4,600 m)

Range: 450 nmi (520 mi, 830 km) with 1,000 lb (450 kg) payload VTOL

Aircrafttoaal encyclopedia

The Curtiss-Wright X-19, company designation Model 200, was an American experimental tiltrotor aircraft
of the early 1960s. It was noteworthy for being the last aircraft of any kind manufactured by Curtiss-Wright.