Sonex Aircraft
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.
In June 2018, John Monnett announced that he will retire and sell the company.
Aircraft
In 2013, the FAA National Kit Evaluation Team approved fast-build "51% rule" versions of the Sonex, Waiex, and Onex.In December 2019 the John Monnett-designed Sonerai was acquired by Sonex Aircraft.
| Model name | First flight | Number built | Type |
| Sonerai | 1971 | family of single and two-seat aircraft | |
| Sonex | 2000 | 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 | |
| Teros | 2015 | UAV |
, 2004
IILS
Engines
Company subsidiary AeroConversions manufactures the AeroConversions AeroVee Engine, a custom aircraft implementation of the Volkswagen air-cooled engine.Hornet's Nest
The Hornet's Nest is the research and development arm of Sonex LLC.E-flight
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 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.at Cotswold Airport, Gloucestershire, England, 2016