The Challenger C-1 was possibly developed from the similar Waco 10. A poorly documented aircraft, the C-1 was progressively modified.[1]
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 initially by a 90 hp (67 kW) Curtiss OX-5inline engine. A number of variants were built as the C-3 Challenger and C-4 Challenger which had detail differences and different engines fitted. Late in 1928 the company introduced a new and slightly smaller design as the C-6 Challenger.
In 1929 the company was absorbed 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 redesignated the Fairchild KR-31.
To act as an engine testbed one KR-21 was modified to use a Fairchild 6-390 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.[citation needed]
In 1930, the KR-34CA, a military version of the Fairchild KR-34 based on the Kreider-Reisner C-4C Challenger design, was built in Farmingdale, New York. A light attack craft, it had two .30 caliber Browning machine guns mounted on the nose, firing through the propellers. The Chinese version had bomb racks under the fuselage. Two of this military version of the Fairchild KR-34 were sold to the warlord generals Liu Wenhui and Liu Xiang in Sichuan Province.
Initial production version, with either 90 hp (67 kW) Curtiss OX-5 (KR-31A), or Hallett H-256, or Curtiss OXX-6, or Fairchild-Caminez or Warner Scarab or 100 hp (75 kW) Kinner K-5 (KR-31B).
C-2A (KR-125)
C-2 used as a testbed for the 100 hp (75 kW) Ranger 6-375 (6 cylinder L-375) inline engine.
C-3 Challenger
C-2 with detail changes and 110 hp (82 kW) Warner Scarab radial engine
C-4 Challenger (KR-34)
C-2 with numerous changes, including the elimination of the ailerons from the top wing, and new engines.
C-4B (KR-34B and KR-35B-1)
130 hp (97 kW) Comet 7-RA or 150 hp (110 kW) Comet 7-D. 4 built.
C-4C (KR-34C)
165 hp (123 kW) Wright J-6 and 165 hp (123 kW) Continental A70. roughly 60 built.
KR-34CA Attack version of C-4C for Mexico and China.[citation needed]
^"Ryan Speedster". Aero Digest. 18 (4): 86. October 1931.
Wikimedia Commons has media related to Fairchild KR-34.
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1674
January 01, 1970
fairchild, kreider, reisner, challenger, later, fairchild, series, american, utility, biplane, aircraft, designed, produced, kreider, reisner, aircraft, company, which, later, taken, over, fairchild, aircraft, company, role, utility, biplane, manufacturer, kre. 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 Fairchild KR 34 KR 34 Role Utility biplane Manufacturer Kreider Reisner AircraftFairchild Aircraft First flight 1928 Contents 1 Development 2 Variants 3 Specifications KR 34 4 ReferencesDevelopment editThe Challenger C 1 was possibly developed from the similar Waco 10 A poorly documented aircraft the C 1 was progressively modified 1 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 initially by a 90 hp 67 kW Curtiss OX 5 inline engine A number of variants were built as the C 3 Challenger and C 4 Challenger which had detail differences and different engines fitted Late in 1928 the company introduced a new and slightly smaller design as the C 6 Challenger In 1929 the company was absorbed 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 redesignated the Fairchild KR 31 To act as an engine testbed one KR 21 was modified to use a Fairchild 6 390 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 citation needed In 1930 the KR 34CA a military version of the Fairchild KR 34 based on the Kreider Reisner C 4C Challenger design was built in Farmingdale New York A light attack craft it had two 30 caliber Browning machine guns mounted on the nose firing through the propellers The Chinese version had bomb racks under the fuselage Two of this military version of the Fairchild KR 34 were sold to the warlord generals Liu Wenhui and Liu Xiang in Sichuan Province Variants editFairchild type numbers in brackets 1 nbsp Kreider Reisner C 4C Challenger C 1 Challenger 90 hp 67 kW Curtiss OX 5 V 8 engine C 2 Challenger KR 31 Initial production version with either 90 hp 67 kW Curtiss OX 5 KR 31A or Hallett H 256 or Curtiss OXX 6 or Fairchild Caminez or Warner Scarab or 100 hp 75 kW Kinner K 5 KR 31B C 2A KR 125 C 2 used as a testbed for the 100 hp 75 kW Ranger 6 375 6 cylinder L 375 inline engine C 3 Challenger C 2 with detail changes and 110 hp 82 kW Warner Scarab radial engine C 4 Challenger KR 34 C 2 with numerous changes including the elimination of the ailerons from the top wing and new engines C 4B KR 34B and KR 35B 1 130 hp 97 kW Comet 7 RA or 150 hp 110 kW Comet 7 D 4 built C 4C KR 34C 165 hp 123 kW Wright J 6 and 165 hp 123 kW Continental A70 roughly 60 built KR 34CA Attack version of C 4C for Mexico and China citation needed C 4D KR 34A 150 hp 110 kW Wright J 6 and 165 hp 123 kW Curtiss R 600 Challenger 1 modified dd C 5 Challenger C 3 C 4 with numerous changes including the elimination of the ailerons from the top wing and an increase in allowable weights C 6 Challenger KR 21 Scaled down 110 hp 82 kW Warner Scarab powered development with tapered wings and redesigned cabane struts C 6A KR 21 C 6 with minor detail changes but same engine C 6B KR 21A 100 hp 75 kW Kinner K 5 or 170 hp 130 kW Curtiss R 600 Challenger or 85 hp 63 kW Armstrong Siddeley Genet dd nbsp KR 21B Parks P 1 Challenger C 2 temporarily modified with radiator between undercarriage legs About 45 built 2 Parks P 2 Challenger with 115 hp 86 kW Axelson company radial and split axle undercarriage Parks P 2A 165 hp 123 kW Wright J 6 5 radial Less than 20 built of P 2 and P 2A 2 dd Ryan Speedster later name for Parks P 2 and Parks 2A 2 3 Hammond Sportster Parks P 2A with wide track undercarriage Seven built 4 5 Specifications KR 34 editData from The Illustrated Encyclopedia of Aircraft Part Work 1982 1985 1985 Orbis Publishing Page 1674 General characteristicsCrew two Length 23 ft 2 in 7 06 m Wingspan 30 ft 1 in 9 17 m Height 9 ft 3 in 2 82 m Wing area 285 sq ft 26 48 m2 Empty weight 1 524 lb 691 kg Gross weight 2 368 lb 1 074 kg Powerplant 1 Wright J 6 Whirlwind Five 5 cylinder radial piston engine 165 hp 123 kW Performance Maximum speed 120 mph 193 km h 100 kn Range 510 mi 821 km 440 nmi Service ceiling 14 000 ft 4 265 m References edit a b Aerofiles Kreider Reisner Retrieved 28 February 2021 a b c Simpson Rod 2001 Airlife s World Aircraft Shrewsbury Airlife Publishing Ltd ISBN 1 84037 115 3 Hammond Biplane Aero Digest 22 4 49 April 1933 Aerofiles Hammond Retrieved 2 March 2021 Ryan Speedster Aero Digest 18 4 86 October 1931 nbsp Wikimedia Commons has media related to Fairchild KR 34 Taylor Michael J H 1989 Jane s Encyclopedia of Aviation London Studio Editions The Illustrated Encyclopedia of Aircraft Part Work 1982 1985 1985 Orbis Publishing Page 1674 Retrieved from https en wikipedia org w index php title Fairchild KR 34 amp oldid 1208650720, wikipedia, wiki, book, books, library,
