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Only one prototype was built and test flown in 1920 by
Gilbert G. Budwig. The S-1 was not marketable against the flood of surplus World War I aircraft on the market at the time. The company was liquidated soon afterward in 1921 and reformed again with the new Lockheed Vega based on the S-1 in 1926.
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aircraft. The wings folded along the side of the aircraft for storage. Roll control was via a system that pivoted the entire lower wing surfaces. They also could be pivoted a full 90 degrees as a massive air brake.
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The S-1 was originally intended to be a two-seater, but was switched to a single place design to make production costs lower. The two cylinder engine was designed in-house by
Anthony Stadlman. The
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The S-1 was developed to produce aircraft with existing capacity and skill of
Loughead workers after the end of
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laid up in concrete molds. The process would be later applied to the larger and more famous
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two cylinder water cooled horizontally-opposed piston engine, 25 hp (19 kW)
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The prototype does not exist, the engine is currently in private ownership.
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129:contracts. The aircraft specifications were to be
113:made by the Loughead brothers, the forerunner to
210:7 US gallons (26 L; 5.8 imp gal)
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91:1920 San Francisco Aeronautical Exposition
423:1920s United States civil utility aircraft
140:was built using an all-wood, multi-layer
370:Beyond the Horizons: The Lockheed Story
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235:65 kn (75 mph, 121 km/h)
63:Loughead Aircraft Manufacturing Company
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247:22 kn (25 mph, 40 km/h)
241:43 kn (50 mph, 80 km/h)
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259:US Patent #1,425,113, 8, August 1922
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109:"Sport-1" was an early single seat
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433:Single-engined tractor aircraft
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384:"Molded Plywood Construction"
438:Aircraft first flown in 1920
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204:790 lb (358 kg)
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53:United States of America
198:28 ft (8.5 m)
192:21 ft (6.4 m)
177:General characteristics
121:Design and development
165:Specifications (S-1)
153:Operational history
72:Loughead brothers,
368:Walter J. Boyne.
328:Missing or empty
315:. September 1960.
293:Missing or empty
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348:"Early Aviators"
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41:Type of aircraft
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408:Image of an S-1
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280:. October 1927.
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48:National origin
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313:Sport Aviation
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233:Maximum speed:
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208:Fuel capacity:
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172:Sport Aviation
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83:11 April 1920
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239:Cruise speed:
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218:Loughead XL-1
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202:Gross weight:
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146:Lockheed Vega
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88:Introduction
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428:Sesquiplanes
389:28 September
387:. Retrieved
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353:28 September
351:. Retrieved
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330:|title=
321:cite journal
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295:|title=
286:cite journal
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245:Stall speed:
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107:Loughead S-1
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226:Performance
214:Powerplant:
127:World War I
417:Categories
264:References
19:S-1 Sport
196:Wingspan:
184:Capacity:
170:Data from
142:monocoque
96:Produced
69:Designer
138:fuselage
115:Lockheed
190:Length:
111:biplane
38:biplane
36:Sport
254:Notes
33:Role
391:2011
355:2011
334:help
299:help
216:1 ×
131:STOL
105:The
278:AAM
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