The St-Just Super-Cyclone is a Canadian amateur-built aircraft produced by

St-Just Aviation St-Just Aviation is a Canadian aircraft manufacturer based in Boucherville, Quebec, a suburb of Montreal. The company specializes in the design and manufacture of aircraft kits for bushplane operations, based on Cessna designs. The company w ...

Boucherville, Quebec Boucherville is a city in the Montérégie region in Quebec, Canada. It is a suburb of Montreal on the South shore of the Saint Lawrence River. Boucherville is part of both the urban agglomeration of Longueuil and Montreal Metropolitan Communi ...

. The aircraft is supplied as plans or as a kit for amateur construction.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 120. WDLA UK, Lancaster UK, 2011. ISSN 1368-485XDowney, Julia: ''2005 Kit Aircraft Directory'', Kitplanes, Volume 21, Number 12, December 2004, page 53. Belvoir Publications. ISSN 0891-1851Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition'', page 257 BAI Communications, 15 July 1998. Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 127. Flying Pages Europe SARL, 2015.

Design and development

The Super-Cyclone is a development of the earlier

St-Just Cyclone The St-Just Cyclone, also called the St-Just Cyclone 180, is a Canadian homebuilt aircraft that was designed and produced by St-Just Aviation of Mirabel, Quebec. The company has since moved to Boucherville, Quebec. While it was available the ...

and is based on the

Cessna 180 The Cessna 180 Skywagon is a four- or six-seat, fixed conventional gear general aviation airplane which was produced between 1953 and 1981. Though the design is no longer in production, many of these aircraft are still in use as personal aircr ...

and Cessna 185 airframe design. The kit manufacturer terms it "a replica" of the Cessna designs. Like the 180/185 it features a

strut-braced In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of strut, which act in ...

high-wing, a four-seat enclosed cabin accessed via doors, fixed conventional landing gear, skis or floats and a single engine in tractor configuration. The aircraft is made from sheet 2024-T3 aluminum, with some parts made from 6061-T6 and 7075-T6. Its extended-span wing employs a

NACA 2412 The National Advisory Committee for Aeronautics (NACA) was a United States federal agency founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research. On October 1, 1958, the agency was dissolved and its assets ...

airfoil An airfoil (American English) or aerofoil (British English) is the cross-sectional shape of an object whose motion through a gas is capable of generating significant lift, such as a wing, a sail, or the blades of propeller, rotor, or turbine. ...

, has an area of and mounts large Fowler flaps. The aircraft can be equipped with engines ranging from . The standard engine used is the

Continental IO-520 The Continental O-520 is a six-cylinder, horizontally opposed aircraft engine produced by Teledyne Continental Motors. First run in 1963 as a development of the IO-346, it has been produced in versions incorporating fuel injection (IO-520), tu ...

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

powerplant. The design includes improvements over the Cessna, including vertically hinged doors and longer span flaps combined with shorter span

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement around ...

s, in a similar manner to the

Cessna 206 The Cessna 205, 206, and 207, known primarily as the Stationair (and marketed variously as the Super Skywagon, Skywagon and Super Skylane) are a family of single-engined, general aviation aircraft with fixed landing gear, used in commercial air ...

.Downey, Julia: ''1999 Kit Aircraft Directory'', Kitplanes, Volume 15, Number 12, December 1998, page 66. Primedia Publications. ISSN 0891-1851

Operational history

In March 2017 there were seven Super-Cyclones on the Transport Canada Civil Aircraft Register and one registered with the US Federal Aviation Administration.

Specifications (Super-Cyclone)

St Just Aviation Super Cyclone C-GGXU on amphib floats 02

References

External links

* {{St-Just Aviation aircraft Super-Cyclone Homebuilt aircraft Single-engined tractor aircraft 1990s Canadian civil utility aircraft High-wing aircraft Aircraft first flown in 1999