Thomas-Morse S-4

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S-4
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The NMUSAF's S-4C Scout in Dayton, OH USA pre-restoration
Role advanced trainerTemplate:Short description
National origin United States
Manufacturer Thomas-Morse Aircraft
Designer Benjamin D. Thomas
First flight June 1917[1]

The Thomas-Morse S-4 Scout is an American biplane advanced trainer, operated by the United States Army and the United States Navy. Dubbed the "Tommy" by pilots who flew it, the aircraft became the favorite single-seat training airplane produced in the U.S. during World War I. It had a long and varied career beginning with the S-4B, which first appeared in the summer of 1917.[2]

Design and development

Built by Thomas-Morse Aircraft in Ithaca, New York in 1917, it was a compact single-seat open-cockpit biplane of equal span and a 100 hp (75 kW) Gnome rotary engine.[3]

The S-4 was designed by Englishman Benjamin Douglas Thomas (no relation to the company owners),[4] formerly with the Sopwith Aviation Company,[5] who also assisted with the design of the Curtiss JN-4 Jenny.[6] The S-4 made its maiden flight in June 1917 in the hands of Paul D. Wilson.[4] Twelve planes went to the Navy.[4]

Operational history

File:Thomas Morse S-4c Scout.jpg
Thomas Morse S-4C with training school number on fuselage sides
File:Thomas-Morse S-5.jpg
A U.S. Navy S-5

The S-4B, with a Script error: No such module "convert". Gnome, a span of Script error: No such module "convert". (8.22 m), and length of Script error: No such module "convert".[4] proved more successful, with three prototypes followed by an order of 97 for the Army and 10 for the Navy,[4][7] while six more were completed with two main and one tail floats as the Navy S-5.[3][8] The S-4B was used by practically every pursuit flying school in the U.S. during 1918.[2]

It was supplemented in 1918 by the S-4C, at a cost of US$5400 each.[4] Six prototypes were built,[4] and the Script error: No such module "convert". Gnome 9B-2 was replaced by the more reliable Script error: No such module "convert". Le Rhône 9C starting with the fifty-second production aircraft.[3][4] 461 S-4Cs went to the Army and four S-4Cs with floats went to the Navy.[4]

After World War I, many "Tommys" were sold as surplus to civilian flying schools, sportsman pilots, and ex-Army fliers. Many were still being used in the mid-1930s for World War I aviation movies, and several continue to exist in flying condition today.[2]

A single aircraft was fitted with new tail and the more powerful Script error: No such module "convert". Le Rhone 9J rotary engine, becoming the S-4E aerobatic trainer.[3] It was not adopted by the military, and after being fitted with a Script error: No such module "convert". Aeromarine V8 engine, it became Basil Rowe‘s racer Space-Eater.[4]

About sixty surplus aircraft survived in civil service, most of which were fitted with the Curtiss OX-5.[4]

Operators

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Surviving aircraft

Specifications (S-4C, late production)

File:Thomas-Morse S-4C 3-view line drawing.jpg
Thomas-Morse S-4C drawing

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See also

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Related lists

References

Notes

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  1. Holmes, 2005. p 52.
  2. a b c United States Air Force Museum 1975, p. 10.
  3. a b c d Donald 1997, p. 875.
  4. a b c d e f g h i j k "Thomas." Aerofiles.com. Retrieved April 8, 2008.
  5. Angelucci 1973, p. 41.
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  8. Swanborough and Bowers 1976, p. 472.
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Bibliography

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  • Angelucci, Enzo, Great Aeroplanes of the World. London: Hamlyn, 1973.
  • Angelucci, Enzo. The Rand McNally Encyclopedia of Military Aircraft, 1914–1980. San Diego, California: The Military Press, 1983. Template:ISBN.
  • Donald, David, ed. Encyclopedia of World Aircraft, p. 875, "Thomas Brothers and Thomas-Morse aircraft". Etobicoke, Ontario: Prospero Books, 1997.
  • Holmes, Tony. Jane's Vintage Aircraft Recognition Guide. London: HarperCollins, 2005. Template:ISBN.
  • Strnad, Frank. The Thomas Morse Scout. London: Profile Publications, 1966.
  • Swanborough, Gordon and Bowers, Peter. United States Navy Aircraft since 1911. London:Putnam, Second edition, 1976. Template:ISBN.
  • United States Air Force Museum. Wright-Patterson AFB, Ohio: Air Force Museum Foundation, 1975.
  • Wegg, John. General Dynamics Aircraft and their Predecessors. London:Putnam, 1990. Template:ISBN.

External links

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