G1 Aviation G1 Explained

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.[1]

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 two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear and a single engine in tractor configuration.

All G1 models have a fuselage made from welded steel tubing, with the wing made from aluminum, all covered in doped aircraft fabric. The Gelinotte variant has a 9.91NaN1 span wing with an area of 14.8m2 and features leading edge slots. The SPYL model uses vortex generators in place of the slots, has the same wing span, but a slightly smaller wing area of 14.27m2. All models are equipped with flaps and have optional folding wings for ground transport and storage. Standard engines available are the 600NaN0 Rotax 912UL and the 750NaN0 Rotax 912ULS 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 engine.[2] [3]

Variants

G1 Amphibie (English - Amphibian)
  • Amphibious version on aluminium floats.
    G1 Gelinotte (English - Hazel Grouse)
  • Wheel-equipped version. The wing is equipped with leading edge slots.[2]
    G1 la Grive (English - Thrush)
  • Agricultural aircraft version.
    G1 SPYL
  • Wheel-equipped version introduced at the Aero show held in Friedrichshafen 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 200NaN0 lighter and 15%-20% faster than the Gelinotte. SPYL wings can be retrofitted to the Gelinotte.[2]
    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 1500NaN0 and spraying equipment. It is only sold ready-to-fly with the 1000NaN0 Rotax 912ULS engine.[2]

    Notes and References

    1. Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 56. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
    2. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 57 and 256-257. Flying Pages Europe SARL, 2015.
    3. Web site: Le Nouveau Moteur 4 Temps Pour Ulm. 15 March 2018. JLT Motors. ecoyota.neuf.fr. 2007. https://web.archive.org/web/20081014121101/http://ecoyota.neuf.fr/Page_1x.html/. 14 October 2008. dead.

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