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The '''Thomas-Morse O-19''' was an [[United States|American]] observation biplane built by the [[Thomas-Morse Aircraft]] Company for the [[United States Army Air Corps]].
  
The '''Thomas-Morse O-19''' was an [[United States|American]] observation biplane built by the [[Thomas-Morse Aircraft]] Company for the [[United States Army Air Corps]].
   
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== Development ==
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==Development==
 
The '''O-19''' was based on the earlier [[Thomas-Morse O-6]] biplane. It was a conventional two-seat biplane of metal construction with fabric-covered wings and fixed tail surfaces. The design was evaluated with a number of different engine installations and the type was ordered into production as the '''O-19B''' with a Pratt & Whitney R-1340-7 Wasp radial engine.
  
The '''O-19''' was based on the earlier [[Thomas-Morse O-6]] biplane. It was a conventional two-seat biplane of metal construction with fabric-covered wings and fixed tail surfaces. The design was evaluated with a number of different engine installations and the type was ordered into production as the '''O-19B''' with a Pratt & Whitney R-1340-7 Wasp radial engine.
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:High-wing monoplane version of the Y1O-41, static test airframe only.<ref name="DS">http://airplane.designation-systems.net/O.xls</ref>
  
:High-wing monoplane version of the Y1O-41, static test airframe only.<ref name="DS">http://airplane.designation-systems.net/O.xls</ref>
   
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== Operators ==
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==Operators==
 
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* [[United States Army Air Corps]]
  
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== Specifications (O-19B) ==
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==Specifications (O-19B)==
 
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==See also==
  
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==References==
  
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* John Andrade, U.S.Military Aircraft Designations and Serials since 1909, Midland Counties Publications, 1979, ISBN 0-904597-22-9 (Page 137 and 138)
  
* John Andrade, U.S.Military Aircraft Designations and Serials since 1909, Midland Counties Publications, 1979, ISBN 0-904597-22-9 (Page 137 and 138)
 
* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 3000
  
* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 3000
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[[Category:United States military reconnaissance aircraft 1920–1929]]
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[[Category:1920s United States military reconnaissance aircraft]]

Latest revision as of 05:25, 30 January 2020

Thomas-Morse O-19
Role Observation biplane
Manufacturer Thomas-Morse
Introduction 1929
Primary user United States Army Air Corps
Number built 176

The Thomas-Morse O-19 was an American observation biplane built by the Thomas-Morse Aircraft Company for the United States Army Air Corps.

Development

The O-19 was based on the earlier Thomas-Morse O-6 biplane. It was a conventional two-seat biplane of metal construction with fabric-covered wings and fixed tail surfaces. The design was evaluated with a number of different engine installations and the type was ordered into production as the O-19B with a Pratt & Whitney R-1340-7 Wasp radial engine.

Variants

XO-19
Improved version of the XO-6 with a 450hp Pratt & Whitney R-1340-3 engine, one built.
YO-20
Similar to the XO-19 with a 525hp Pratt & Whitney R-1690-1 engine, one built.
XO-21
Similar to the XO-19 with a 600hp Curtiss H-1640-1 engine, one built later re-engined as the XO-21A
XO-21A
The XO-21 fitted with a 525hp Wright R-1750-1 engine.
O-19
Service evaluation aircraft with a 500hp Pratt & Whitney R-1340-9, two built.
O-19A
O-19 without the 88 US Gallon main fuel tank, one built.
O-19B
Production version with a 450hp Pratt & Whitney R-1340-7 engine, two machine-guns and modified cockpit, 70 built.
O-19C
O-19B with tailwheel, ring cowl and minor changes, 71 built.
O-19D
One O-19C converted as a VIP staff transport with dual controls.
O-19E
O-19C with extended upper span wing and a 575hp Pratt & Whitney R-1340-15 engine, 30 built.
O-21
O-19 with 600hp Curtiss H-1640 Chieftain engine, one built, one converted.
YO-23
XO-19 with a 600hp Curtiss V-1570-1 Conqueror engine, one built.
Y1O-33
One O-19B re-engined with a 600hp Curtiss V-1570-11 engine and revised tail surfaces, one converted.
Y1O-41
A sesqui-plane conversion of the Y1O-33 with a 600hp Curtiss V-1570-79 engine, one converted. Later modified by Consolidated Aircraft as their Model 23 and exported to Mexico
Y1O-42
High-wing monoplane version of the Y1O-41, static test airframe only.[1]

Operators

United States

Specifications (O-19B)

Data from The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 3000

General characteristics

  • Crew: Two
  • Length: 28 ft 4 in (8.64 m)
  • Wingspan: 39 ft 9 in (12.12 m)
  • Height: 10 ft 6 in (3.20 m)
  • Wing area: 348 ft2 (32.33 m2)
  • Empty weight: 2722 lb (1235 kg)
  • Gross weight: 3800 lb (1724 kg)
  • Powerplant: 1 × Pratt & Whitney R-1340-7 Wasp radial piston engine, 450 hp (336 kW)

Performance

  • Maximum speed: 137 mph (220 km/h)
  • Service ceiling: 20,500 ft (6250 m)

Armament

  • 2 x 0.3in (7.62mm) machine-guns (one fixed forward-firing, one movable in rear cockpit)

    • See also

    References

    Commons-Logo Wikimedia Commons has media related to Thomas-Morse aircraft.
    Notes
    1. ↑ http://airplane.designation-systems.net/O.xls
    Bibliography
    • John Andrade, U.S.Military Aircraft Designations and Serials since 1909, Midland Counties Publications, 1979, ISBN 0-904597-22-9 (Page 137 and 138)
    • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 3000
    USAAC/USAAF observation aircraft
    Observation
    Observation Amphibian
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