Sonex Aircraft, LLC is an American kit aircraft manufacturer located in Oshkosh, Wisconsin, producing kits for four all-metal homebuilt monoplanes. The company was founded in 1998 by John Monnett, who has designed the Monnett Sonerai sport aircraft series, Monnett Monerai sailplane, Monnett Moni motorglider, and Monnett Monex racer. Monnett designs are displayed in the Steven F. Udvar-Hazy Center of the National Air and Space Museum near Washington D.C.
|Headquarters||Oshkosh, Wisconsin, United States|
|John Monnett (founder)|
Jeremy Monnett (CEO until his death in 2015)
Number of employees
In June 2018, John Monnett announced that he will retire and sell the company.
In 2013, the FAA National Kit Evaluation Team (NKET) approved fast-build "51% rule" versions of the Sonex, Waiex, and Onex.
|Model name||First flight||Number built||Type|
|Sonerai||1971||family of single and two-seat aircraft|
|Sonex||2000 (customer built)||500 by 2014||the original aircraft design, incorporating a low-wing design, seats two, and has a fast build time.|
|Waiex||almost identical to the Sonex, but features a Y-tail.|
|Xenos||2003||a motor-glider development of the Waiex with longer wings and the same engine selection as the other two Sonex models.|
|Onex||2011||a single seat aircraft with similar construction to a Sonex that will feature folding wings that allow the aircraft to be stored in a standard garage.|
|ESA||the Electric Sport Aircraft is a modified Xenos.|
|SubSonex JSX-1||Single seat, single engine jet protype|
|SubSonex JSX-2||2011||Single seat, single engine jet|
The Hornet's Nest is the research and development arm of Sonex LLC.
At AirVenture 2007, Sonex Aircraft announced a project to work on innovative technologies in aviation. The E-flight projects includes using an electric motor, ethanol-based fuels, and other power plant alternatives. In December 2010, an all-electric Waiex was test flown from Wittman field in Oshkosh, Wisconsin. The aircraft was flown with a 54 kW (72 hp) brushless DC electric motor, managed by a newly designed controller. Power is from a collection of 14.5 kW-hour lithium polymer batteries, giving the aircraft an endurance of one hour at low-speed cruise or 15 minutes of aerobatics. This was the beginning of the development of the Sonex Electric Sport Aircraft.
- O'Connor, Kate (June 6, 2018). "Sonex For Sale". AVweb. Retrieved June 8, 2018.
- "Sonex Offers Quick-Build Kits Featuring Prebuilt Major Assemblies". Retrieved July 22, 2013.
- Cook, Marc (December 30, 2019). "Sonerai Kit Aircraft Comes Home". AVweb. Archived from the original on January 2, 2020. Retrieved December 15, 2019.
- "Sonex reports 500th completion". Sport Aviation: 14. January 2015.
- Sonex Aircraft (2008). "Sonex - the Original Reality Check". Archived from the original on November 25, 2005. Retrieved October 9, 2008.
- Sonex Aircraft (2010). "Specifications - Tail Configuration: Y-tail". Archived from the original on April 5, 2006. Retrieved January 6, 2010.
- Xenos Archive, Xenos
- Sonex Aircraft (2008). "Xenos". Archived from the original on April 5, 2006. Retrieved October 9, 2008.
- E-Flight ESA
- "Sonex Aircraft and Navmar Applied Sciences to Collaborate on UAV Design". Retrieved June 26, 2015.
- "Another Secret Is Out". Retrieved July 24, 2007.
- "Sonex electric-powered Waiex makes first flight". Retrieved December 6, 2010.
- Pew, Glenn (December 2010). "Sonex Flies Electric Airplane". AvWeb. Retrieved December 6, 2010.
- "Sonex Aircraft Hornet's Nest Research and Development". Retrieved October 21, 2011.
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