Decathlon

The Decathlon entered production at Champion in 1972, immediately before the company was acquired by Bellanca Aircraft Corporation, so only a handful were produced by Champion. Bellanca continued production of the Decathlon throughout the 1970s, moving to the Super Decathlon variant during 1976. Bellanca built over 600 of the 8KCAB design before production of the aircraft was interrupted when the company's assets were liquidated in 1981.

The Decathlon design passed through the hands of a number of companies through the 1980s, including a Champion Aircraft Company which was no relation to the Champion Aircraft of the 1960s, but no Decathlons were built in that period. American Champion Aircraft Corporation acquired the Decathlon design, along with the 8GCBC Scout and the group of Citabria and Champ variants, in 1990, bringing the Super Decathlon version back into production that same year. It is still being produced.

The Decathlon traces its lineage back to the Aeronca Champ, by way of the Citabria. Like the Citabria, the Decathlon features tandem seating and joystick controls. The fuselage and tail surfaces are constructed of welded metal tubing. The outer shape of the fuselage is created by a combination of wooden formers and longerons, covered with fabric. The cross-section of the metal fuselage truss is triangular, a design feature which can be traced back to the earliest Aeronca C-2 design of the late 1920s.

The strut-braced wings of the Decathlon are, like the fuselage and tail surfaces, fabric covered, using aluminum ribs. The wings of Champion and Bellanca Decathlons were built with wooden spars. American Champion has been using aluminum spars in the aircraft it has produced and has made the aluminum-spar wings available for retrofit installation on older aircraft. Compared to the Citabria’s wingspan of 33.5 feet (10.2 m), the Decathlon’s wingspan is shorter, at 32 feet (9.8 m). One of the major developments of the 8KCAB Decathlon over the 7KCAB Citabria is the Decathlon’s wing, which employs a semi-symmetric airfoil, as opposed to the Citabria’s flat-bottomed airfoil. This change gives the Decathlon better inverted flight and negative-g maneuver capabilities.

The landing gear of the Decathlon is in a conventional arrangement. The main gear legs of most Decathlons are made of spring steel, though American Champion began to use aluminum gear legs in 2004.

Like the 7KCAB, the engine of the 8KCAB has a fuel injection system, as opposed to a carburetor. To facilitate negative-g flight, the fuel system incorporates a 1.5 gallon header tank beneath the instrument panel, and the engine is fitted with a Christen Industries inverted oil system.

Champion and Bellanca built the Decathlon with several Lycoming IO-320 engine variants, all of 150 horsepower (110 kW), and with the choice of a fixed-pitch or constant speed propeller. The major improvement in Bellanca’s introduction of the Super Decathlon was the change of engine to the Lycoming AEIO-360-H1A or –H1B, both of 180 horsepower (130 kW), which was accompanied by a selection of constant speed propellers. The American Champion Super Decathlon uses the AEIO-360-H1B, along with a constant speed propeller.

Source: Wikipedia

Champion Aircraft Corporation

Champion Aircraft Corporation was formed in 1954 by Robert Brown. Headquartered in Osceola, Wisconsin.  It began production of the 7EC design which it had purchased from Aeronca Aircraft Corporation. Through the 1950s and the 1960s Champion introduced variations on the 7-series design. Champion also developed and began production of the significantly upgraded follow-on to the 7-series, the 8KCAB Decathlon, as well as the twin-engined Lancer. Champion was acquired in 1970 by Bellanca Aircraft Corporation, which continued to produce most of the Champion designs in production at the time of acquisition.

Champion, as the name suggests, was formed to produce the design which Aeronca had introduced in 1946 as the 7AC Champion. By the time Aeronca ceased production in 1951, they had advanced the design through the 7BCM, 7CCM, and 7DC, reaching the 7EC. It was this model with which Champion commenced production in 1954, giving it the name "Traveler" to go along with the alphanumeric model designation. (Champion assigned both alphanumeric designations and names to most of its designs.) Though there was a great variety, all of the aircraft which Champion introduced were in one way or another related to the original Aeronca design.

Champion Aircraft

• 1954 7EC Traveler
• 1957 7FC Tri-Traveler
• 1958 7GC Sky-Trac
• 1959 7HC DX'er
• 1959 7GCA
• 1960 7JC Tri-Con
• 1960 7GCB Challenger
• 1961 7KC Olympia
• 1962 7GCBA Challenger
• 1963 402 Lancer
• 1964 7ECA Citabria
• 1965 7GCAA Citabria
• 1965 7GCBC Citabria
• 1966 7KCAB Citabria
• 1970 8KCAB Decathlon

Source: Wikipedia