Fairchild 21

Fairchild KR-21
Fairchild KR-21-B of 1930
Role	Two-seat monoplane, later biplane
National origin	United States
Manufacturer	Fairchild Aircraft
Designer	Otto C. Koppen
First flight	1928
Number built	2 -A 5 -B model, two being conversions of the -A

The Kreider-Reisner KR-21-A was a 1928 American two-seat monoplane. They were designed and built by the Kreider-Reisner Aircraft Company of Hagerstown, Maryland.^[1] Fairchild Aircraft took over Kreider-Reisner in 1929 and continued to build them, as the Fairchild KR-21, later the Fairchild 21.^[2][3]

Design and development

The KR-21-A was a low-wing braced monoplane with two open tandem cockpits and powered by an 80 hp (60 kW) Armstrong Siddeley Genet radial piston engine.^[2] It was of mixed construction and had a fixed tailwheel landing gear and was fitted with dual controls.^[2]

The KR-21-B was a more powerful biplane development, using a 125 bhp Kinner B-5 engine.^[1] Five were produced, three built as -B models and two converted from the -A.

At least three, most of the production, survive today

• NC107M^[4]
• NC236V^[5]
• NC954V^[1]

The KR-21 would in turn form the basis of the KR-22 parasol monoplane design.^[6]

Specifications ( -A )

Data from ^[2]

General characteristics

• Crew: 2
• Length: 21 ft 6 in (6.55 m)
• Wingspan: 28 ft 3 in (8.61 m)
• Wing area: 139 sq ft (12.9 m²)
• Empty weight: 755 lb (342 kg)
• Max takeoff weight: 1,250 lb (567 kg)
• Powerplant: 1 × Armstrong Siddeley Genet 5-cylinder radial piston engine, 80 hp (60 kW)

Performance

• Maximum speed: 105 mph (169 km/h; 91 kn)
• Cruise speed: 90 mph (78 kn; 145 km/h)
• Range: 425 mi (369 nmi; 684 km)
• Service ceiling: 9,440 ft (2,877 m)

References

Wikimedia Commons has media related to Fairchild KR-21.

Notes

Bibliography