185:. The WASP II uses a slightly modified and derated version of the WR-19-A7D, yielding 600 lbf thrust from its micro turbofan engine and is designated WR19-7, rated at 570 lbf thrust, after minor modifications and said derating. Modifications to the WR-19-A7D included accessories — replacement of pyro starter with electric/air start — and exhaust system modifications. No internal modifications to the counter-rotating micro turbofans were performed. The first crewed, untethered flight was conducted in April 1980. Ray Le Grande is one of the WASP II operators trained by Williams International to fly the X-Jet.
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turbofan, and X-Jet's predecessor, the WASP I (Williams Aerial
Systems Platform), which was developed in the 1970s and was powered by the more powerful WR19-9 BRP5, rated at 670 lbf (2.98
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and rotate on its axis, stay aloft for up to 45 minutes and travel at speeds up to 60 miles per hour (97 km/h). It was evaluated by the
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Other VTOL systems developed by
Williams International included a jet-powered flying belt, developed in 1969, which was powered by a
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One of the three original proof-of-concept prototypes of the
Williams X-Jet, on display at the Seattle
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was issued for the
Williams X-Jet. Technical information and drawings are available at the
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and small, uncrewed aircraft, and so the development of the X-Jet was discontinued.
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The
History of North American Small Gas Turbine Aircraft Engines
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in the 1980s, but was deemed inferior to the capabilities of
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engine, 570 lbf (2.5 kN) thrust (modified)
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Aircraft of comparable role, configuration, and era
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57:but its sources remain unclear because it lacks
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362:1970s United States experimental aircraft
183:United States Patent and Trademark Office
88:Learn how and when to remove this message
261:52 kn (60 mph, 96 km/h)
173:of 0.47 lb/lbf·h (13.31 g/kN·s).
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27:Single-person lightweight aircraft
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221:4 ft 0 in (1.22 m)
132:) aircraft powered by a modified
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18:Williams Aerial Systems Platform
215:3 ft (0.91 m) approx.
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273:10,000 ft (3,000 m)
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116:X-Jet viewed from the side
233:550 lb (249 kg)
227:401 lb (182 kg)
171:specific fuel consumption
43:This article includes a
382:Standing pilot aircraft
316:Display information at
200:General characteristics
72:more precise citations.
387:Single-engine aircraft
189:Specifications (X-Jet)
126:Williams International
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333:nationalmuseum.af.mil
178:U.S. patent 4,447,024
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322:Seattle, Washington
298:Hiller VZ-1 Pawnee
152:United States Army
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45:list of references
377:Williams aircraft
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16:(Redirected from
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367:Flying platforms
328:Guardian article
318:Museum of Flight
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64:Please help
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252:Performance
237:Powerplant:
156:helicopters
70:introducing
356:Categories
311:References
265:Endurance:
78:March 2014
194:Data from
287:See also
244:turbofan
137:turbofan
219:Height:
213:Length:
66:improve
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144:Pulpit
306:Notes
207:Crew:
148:hover
51:, or
342:ISBN
282:1.11
239:1 ×
130:VTOL
120:The
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