Airkraft Sunny Explained

The Airkraft Sunny is an ultralight aircraft that was designed by Dieter Schulz. The aircraft was initially produced by his company, Tandem Aircraft KG of Saulgau, Germany, which built about 150 examples between 1989 and 1999. After he sold the rights in 1999, it was then produced by Dewald Leichtflugzeugbau Gmbh of Bad Schönborn, Germany and more recently by Airkraft Gmbh Leichtflugzeugbau of Beringen, Switzerland, who seem to have gone out of business in about 2010 and production ended. Originally supplied ready-to-fly, later the aircraft was supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.[1] [2] [3] [4] [5] [6]

Design and development

The aircraft complies with the Fédération Aéronautique Internationale microlight category rules. It features an unusual diamond-shaped biplane, strut-braced closed wing layout, a two-seats-in-tandem enclosed or open cockpit, fixed tricycle landing gear and a single engine in pusher configuration. The upper wing is swept back, while the lower wing is straight, but mounted further aft. The two wings are joined by swept tip rudders. The elevons are mounted to the lower wing only.[3]

The aircraft is made from bolted-together aluminium tubing, with its flying surfaces covered in Dacron sailcloth. Standard engines available include many models of Hirth, Rotax, BMW and Verner 133M powerplants, ranging from 65to.[3]

Variants

Sunny Light
  • Version with open cockpit[3]
    Sunny Sport
  • Two seat tandem version with enclosed or semi-enclosed cockpit[3] [2] [5]
    Sunny Side-By-Side
  • Version with side-by-side configuration seats[5]
    Sunny Targa
  • Fully enclosed version.[5]
    Sunny Amphibian
  • Version with amphibious floats[3]

    External links

    Notes and References

    1. Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 23. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
    2. Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 135. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X
    3. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 23. Flying Pages Europe SARL, 2015.
    4. Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 266. BAI Communications, 15 July 1998.
    5. Web site: The complete history of the Sunny-Boxwing by Tandem Aircraft KG . 24 April 2018. Schulz. Dieter. www.sunny-boxwing.de.
    6. Web site: Airkraft . Internet Archive Wayback Machine . 24 April 2018.

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