Fairchild KR-34

__NOTOC__ Infobox Aircraft
name=Fairchild KR-34


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type=Utility biplane
manufacturer=Kreider-Reisner Aircraft
Fairchild Aircraft
designer=
first flight=1928
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The Kreider-Reisner Challenger (later the Fairchild KR series) was an American utility biplane aircraft designed and produced by the Kreider-Reisner Aircraft Company, which was later taken over by the Fairchild Aircraft Company.

Development

The C-2 Challenger was the first commercial aircraft developed by the Kreider-Reisner Aircraft Company. The Challenger was a conventional mixed-construction biplane with a fixed tailskid landing gear. It had two open tandem cockpits for a pilot (at the rear), and passenger (forward) and was powered by a 90 hp (67 kW) Curtiss OX-5 inline engine. A number of variants were built designated the C-3 Challenger and C-4 Challenger which had detailed differences and different engines fitted. Late in 1928 the company introduced a new and slightly smaller design designated the C-6 Challenger.

In 1929 the company was bought by the Fairchild Aircraft Company who continued the production of the C-4 as the Fairchild KR-34 and the C-6 as the Fairchild KR-21. Although not built by Fairchild the C-2 was re-designated the Fairchild KR-31.

To act as an engine test-bed a KR-21 was modified to use a Fairchild 3-690 engine (later named Ranger) and changes were made to the wing and landing-gear geometry. The modified aircraft was known as the Fairchild KR-125. In 1931 a similar aircraft without the geometry changes but with a Ranger engine was sold under the designation KR-135.

Variants

;C-2 Challenger:Initial production version, later KR-31.;C-3 Challenger:C-2 with detail and engine changes.;C-4 Challenger:C-2 with detail and engine changes, later KR-34;C-6 Challenger:Smaller version of C-2, later KR-21.;KR-21:Re-designation of the C-6.;KR-31:Re-designation of the C-2.;KR-35:Re-designation of the C-4.;KR-125:One KR-21 modified to an engine test bed for the Fairchild 6-390.;KR-135:Production version of KR-21 with in-line engine.

pecifications (KR-34)

aerospecs
ref=The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1674
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crew=2
capacity=
length m=7.06
length ft=23
length in=2
span m=9.17
span ft=30
span in=1
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height m=2.82
height ft=9
height in=3
wing area sqm=26.48
wing area sqft=285
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volume m3=
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aspect ratio=
empty weight kg=691
empty weight lb=1524
gross weight kg=1074
gross weight lb=2368
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eng1 number=1
eng1 type=Wright J-6 Whirlwind Five 5-cylinder radial piston engine
eng1 kw= 123
eng1 hp= 165
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max speed kmh=193
max speed mph=120
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range km=821
range miles=510
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ceiling m=4265
ceiling ft=14,000
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References

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* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1674