Engineering:Stearman C3
| Stearman C3 | |
|---|---|
| |
| Stearman C3B | |
| Role | three-seat light commercial biplane |
| National origin | United States |
| Manufacturer | Stearman Aircraft |
| Designer | Lloyd Stearman |
| First flight | 1927 |
| Status | a few are still airworthy |
| Primary user | air mail and commercial companies |
| Number built | 179 |
The Stearman C3 was an United States -built civil biplane aircraft of the 1920s, designed by Stearman Aircraft of Wichita, Kansas. It was also the first Stearman aircraft to receive a type certificate.[1]
Development
The C3 was a rugged biplane with simple straight wings, a tough undercarriage with oleo shock absorbers and two open cockpits with the pilot in the rear and two side-by-side passenger seats in the front. In fact, it was a slightly modified version of the earlier model C2 aircraft. Changes included an increased volume oil tank and larger sized baggage compartment.[1]
Introduced in 1928, the C3 was powered by a variety of engines of between 128 hp and 225 hp, each version having its own designation.[2] The last version of the C3 was the C3R which had several external differences including a cutout in the aft portion of the wing center section for improved pilot visibility, a headrest in the aft cockpit, and slightly increased chord of the rudder and vertical stabilizer.[citation needed]
Although there were several versions of the C3, most were either the C3B and the C3R. A few C3s were approved for float operations.[1]:59,198-199
Operational history
The C3 was built with light commercial applications in mind, including passenger flying and business flights. The C3MB was a special mail-carrying aircraft based on the C3 with the forward cockpit enclosed as a dedicated cargo compartment. This version was operated in 1928 by National Parks Airways on airmail route CAM 26 from Salt Lake City, Utah to Pocatello, Idaho and Great Falls, Montana.[3]
Variants
Data from:Airlife's World Aircraft,[2] Aerofiles:Stearman[4] Variants produced were:
- C1
- First of the C series powered by a Curtiss OX-5, later re-engined with a 240 hp (179 kW) Menasco-Salmson radial as the C1X. One built.[4]
- C2
- Four aircraft similar to the C1, with the radiator mounted underneath, hydraulic shock absorbers and dual controls. Variously powered by 90 hp (67 kW) Curtiss OX-5, Wright-Hisso A, Wright Whirlwind and Menasco-Salmson radial engine.[4]
- C3B Sport Commercial
- 220 hp (164 kW) Wright J5 radial engine.[4]
- C3C
- 150 hp (112 kW) Wright Martin/Hispano Suiza E engine.[4]
- C3D
- 180 hp (134 kW) Wright Martin/Hispano Suiza E engine. 1 delivered.[4]
- C3E
- C3F
- 190 hp (142 kW) Wright Martin/Hispano Suiza E3 engine.[4]
- C3G
- C3H
- 260 hp (194 kW) Menasco-Salmson air-cooled engine.[4]
- C3I
- C3K
- 128 hp (95 kW) Siemens-Halske Sh 12.[4]
- C3L
- 130 hp (97 kW) Comet 7D radial engine. 1 built, later converted to C3B.[4]
- C3MB
- C3B with forward cockpit enclosed for mail carrying.[4]
- C3P
- 220 hp (164 kW) Wright J5 Whirlwind radial engine.[4]
- C3R Business Speedster
- 225 hp (168 kW) Wright J6.[5][4]
Operators
Peru
Aircraft on display
- Museum of Flight, Seattle, Washington[6]
- Western Antique Aeroplane & Automobile Museum has a 1928 model Stearman C3B NC8830[7]
Specifications (C3B)
Data from [8]
General characteristics
- Crew: 1
- Capacity: 2 passengers
- Length: 24 ft 0 in (7.32 m)
- Wingspan: 35 ft 0 in (10.68 m)
- Height: 9 ft 0 in (2.75 m)
- Empty weight: 1,650 lb (748 kg)
- Max takeoff weight: 2,650 lb (1,202 kg)
- Powerplant: × Wright J5 , 220 hp (160 kW)
Performance
- Maximum speed: 126 mph (203 km/h, 109 kn)
- Cruise speed: 108 mph (174 km/h, 94 kn)
- Range: 620 mi (1,000 km, 540 nmi)
- Rate of climb: 1,000 ft/min (5.1 m/s)
See also
Aircraft of comparable role, configuration and era
- Alexander Eaglerock
- American Eagle A-101
- Brunner-Winkle Bird
- Buhl-Verville CA-3 Airster
- Command-Aire 3C3
- Parks P-1
- Pitcairn Mailwing
- Spartan C3
- Swallow New Swallow
- Travel Air 2000 and 4000
- Waco 10
Related lists
References
Notes
- ↑ 1.0 1.1 1.2 Phillips, Edward (2006). Stearman Aircraft: A Detailed History. North Branch, MN: specialtypress. pp. 57,64-67. ISBN 9781580070874.
- ↑ 2.0 2.1 Simpson, 2001, pp. 520–521.
- ↑ Davies 1998, p. 142.
- ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 Eckland, E.O.. "Stearman". http://aerofiles.com/_stear.html. Retrieved 27 December 2018.
- ↑ Grey, C.G., ed (1931). Jane's all the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. pp. 317c–318c.
- ↑ Museum of Flight. "Stearman C-3B - Manufacturer was Stearman Aircraft Company". Museumofflight.org. http://www.museumofflight.org/aircraft/stearman-c-3b. Retrieved 2012-07-21.
- ↑ Ken Olsson. "Our Stories". Waaamuseum.org. http://www.waaamuseum.org/pages/antiques/airplanes_list.html. Retrieved 2012-07-21.
- ↑ Simpson 2001, p. 521.
Bibliography
External links
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