The G1 Aviation G1 is a French STOL ultralight aircraft, designed and produced by G1 Aviation of Tallard. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 56. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X

Zenith Aircraft __NOTOC__ Zenith Aircraft Company is in the exclusive business of designing, developing and manufacturing kit aircraft. The independent, privately owned company was formed in 1992 in Mexico, Missouri, centrally located in the United States, and ...

considers the G1 an unauthorized copy of the

Zenith STOL CH 701 The Zenith STOL CH 701 and CH 750 are a family of light, two-place kit-built STOL aircraft designed by Canadian aeronautical engineer Chris Heintz through his Midland, Ontario based company, Zenair. The CH 701 first flew in 1986 an ...

Design and development

The aircraft is derived from the Alisport Yuma and was designed to comply with the Fédération Aéronautique Internationale microlight rules. It features a strut-braced

high wing A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...

, a two-seats-in-

side-by-side configuration Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...

enclosed cockpit, fixed

tricycle landing gear Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle g ...

and a single engine in

tractor configuration In aviation, the term tractor configuration refers to an aircraft constructed in the standard configuration with its engine mounted with the propeller in front of it so that the aircraft is "pulled" through the air. Oppositely, the pusher co ...

. All G1 models have a

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraf ...

made from welded steel tubing, with the wing made from

aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It ha ...

, all covered in doped

aircraft fabric Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

. The Gelinotte variant has a span wing with an area of and features

leading edge slot A leading-edge slot is a fixed aerodynamic feature of the wing of some aircraft to reduce the stall speed and promote good low-speed handling qualities. A leading-edge slot is a spanwise gap in each wing, allowing air to flow from below the wing ...

s. The SPYL model uses

vortex generator A vortex generator (VG) is an aerodynamic device, consisting of a small vane usually attached to a lifting surface (or airfoil, such as an aircraft wing) or a rotor blade of a wind turbine.

s in place of the slots, has the same wing span, but a slightly smaller wing area of . All models are equipped with flaps and have optional folding wings for ground transport and storage. Standard engines available are the

Rotax 912UL The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, l ...

and the

Rotax 912ULS The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, later ...

four-stroke powerplants. The company also offers a new exhaust system for the Rotax 912 that is quieter than the stock Rotax-supplied system. The aircraft has also been equipped with the

JLT Motors Ecoyota The JLT Motors Ecoyota is a series of French aircraft engines, designed and produced by JLT Motors of Boos, Seine-Maritime for use in ultralight aircraft.Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pag ...

engine.Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 57 and 256-257. Flying Pages Europe SARL, 2015.

Variants

;G1 Amphibie (English - '' Amphibian'') :Amphibious version on aluminium floats. ;G1 Gelinotte (English - ''

Hazel Grouse The hazel grouse (''Tetrastes bonasia''), sometimes called the hazel hen, is one of the smaller members of the grouse family of birds. It is a sedentary species, breeding across the Palearctic as far east as Hokkaido, and as far west as eastern a ...

'') :Wheel-equipped version. The wing is equipped with

s. ;G1 la Grive (English - '' Thrush'') :

Agricultural aircraft An agricultural aircraft is an aircraft that has been built or converted for agricultural use – usually aerial application of pesticides (crop dusting) or fertilizer (aerial topdressing); in these roles they are referred to as "crop duster ...

version. ;G1 SPYL :Wheel-equipped version introduced at the Aero show held in

Friedrichshafen Friedrichshafen ( or ; Low Alemannic: ''Hafe'' or ''Fridrichshafe'') is a city on the northern shoreline of Lake Constance (the ''Bodensee'') in Southern Germany, near the borders of both Switzerland and Austria. It is the district capital (''K ...

in 2010 and named for the two designers of the aircraft model, Serge Present and Yvan Lhermitte. The SPYL replaces the Gelinotte's wing, which is equipped with leading edge slots, with a new wing equipped with vortex generators instead. The new wing makes this model lighter and 15%-20% faster than the Gelinotte. SPYL wings can be retrofitted to the Gelinotte. ;G1 Agricole :Agricultural aircraft version with the same wing as the SPYL, employing vortex generators in place of leading edge slots. It can be equipped with an external chemical tank of up to and spraying equipment. It is only sold ready-to-fly with the

engine.

Specifications (G1 SPYL)

References

External links

*{{Official website, http://www.g1aviation.com/ 2000s French ultralight aircraft Homebuilt aircraft Single-engined tractor aircraft