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KR-21
Fairchild KR-21-B of 1930
Role	Two-seat biplaneType of aircraft
National origin	United States
Manufacturer	Fairchild Aircraft
Designer	Otto C. Koppen
First flight	1928

The Kreider-Reisner KR-21-A is a 1928 American two-seat biplane. It was designed and built by the Kreider-Reisner Aircraft Company of Hagerstown, Maryland. Fairchild Aircraft took over Kreider-Reisner in 1929 and continued to build them, as the Fairchild KR-21, later the Fairchild 21.

Design and development

Designed by Fred Seiler Jr., H.L. Puckett states "over 200 were built in 6 different models."

The KR-21-A was a wire braced biplane with two open tandem cockpits and powered by a 100 hp (60 kW) Kinner K-5 radial piston engine. It was of mixed construction and had a fixed tailwheel landing gear and was fitted with dual controls.

The KR-21-B was a more powerful biplane development, using a 125 bhp Kinner B-5 engine.

Specifications (KR-21)

Data from

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 m)
• Empty weight: 755 lb (342 kg)
• Max takeoff weight: 1,250 lb (567 kg)
• Powerplant: 1 × Kinner K-5 5-cylinder radial piston engine, 90 hp (67 kW)

Performance

• Maximum speed: 105 mph (169 km/h, 91 kn)
• Cruise speed: 90 mph (140 km/h, 78 kn)
• Range: 425 mi (684 km, 369 nmi)
• Service ceiling: 9,440 ft (2,880 m)

References

Notes

1. ^ "1930 Kreider-Reisner KR-21B - N954V". EAA.
2. ^ Orbis 1985, p. 1640
3. "American airplanes – Cessna". www.aerofiles.com. 4 April 2009. Retrieved 2009-12-29.
4. Puckett, H.L. (1980). Sherman Fairchild's PT-19: Cradle of Heroes. Flambeau Lith Corporation. pp. 10–11.

Bibliography

• The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). Orbis Publishing.

• 1920s United States civil utility aircraft
• Fairchild aircraft
• Biplanes
• Single-engined tractor aircraft
• Aircraft first flown in 1928
• Kreider-Reisner aircraft
• Aircraft with fixed conventional landing gear