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Beating Gravity - Curtiss-Wright X-19A

Enlarge image (will open in a new window)The X-19 traced its ancestry to the X-100, which first flew in March 1960 as part of Curtiss-Wright's investigation of the 'radial lift force' effect, in which the propellors of a convertiplane continue to deliver lift even when swivelled for horizontal flight. This characteristic allowed for smaller wings to be fitted.

The X-100's single Avco Lycoming YT53-L-1 turboshaft drove two 3.05 m. (10 ft.) diameter proprotors, with the efflux exhausted through tail nozzles for low-speed pitch and yaw control.

The X-100 was a sufficient success to lead to the much more sophisticated X-200, of which two were ordered for the USAF and designated X-19A. This aircraft first flew in November 1963, and was configured as a four-propellored, twin powerplant executive transport.

Although the design had considerable potential, further development ceased after the loss of the first prototype and before full flight transition had been attempted.

Curtiss-Wright X-19A data:
POWERPLANT:
Two Avco Lycoming T55-L-5
turboshafts of 2,200 shp
(1640 kw) each.

MAX. TAKEOFF WEIGHT:
13,660 lb (6196 kg)

PAYLOAD:
Passengers or
1,200 lb (544 kg) of freight

PROPROTOR DIAMETER:
13 ft 0 in (3.96 m)

SPAN:
19 ft 6 in (5.94 m) front wing,
21 ft 6 in (6.55 m) rear wing.

LENGTH:
42 ft 1 in (12.83 m)

MAXIMUM SPEED:
454 mph at optimum altitude

OPERATIONAL RANGE:
325 miles


More X-19 links:

http://avia.russian.ee/vertigo/curtiss_x-19-r.html


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