• Source: Sonex Aircraft Sonex

The Onex, sonex" target="_blank">Sonex, Waiex and Xenos are a family of lightweight, metal, low-wing, two seat homebuilt aircraft. Kits are produced and marketed by sonex" target="_blank">Sonex Aircraft, a small manufacturer based in Oshkosh, Wisconsin. By 2014, 500 customer built aircraft had been completed.
The sonex" target="_blank">Sonex can also be built from plans.
Company founder John Monnett was approached by an Italian business looking for an aircraft that would meet their Microlight category. A variation of Sonerai was initially proposed to meet the 40 mph minimum flight speed requirement. Eventually a clean-sheet design was built around a Jabiru or VW engine installation with similar all-aluminum box fuselage construction as the Monnett Moni. The sonex" target="_blank">Sonex can accept various lightweight – less than 200 lb (91 kg) – engines of between 80 and 130 hp (60 and 97 kW).
The sonex" target="_blank">Sonex, Waiex and Xenos all qualify as American experimental light-sport aircraft (ELSA).




Development


The sonex" target="_blank">Sonex plans contain several construction options, including conventional or tricycle landing gear, as well as a center or dual stick. Motor mount drawings are supplied for all three recommended powerplants: the 2180cc Volkswagen, 2200 Jabiru, and 3300 Jabiru. High performance is achieved through a clean aerodynamic shape and simple, light weight construction.
The sonex" target="_blank">Sonex can be built from scratch using factory supplied drawings or may be assembled in approximately 800 to 1,000 hours using the precut complete airframe kit. A complete kit based sonex" target="_blank">Sonex can be constructed for as little as USD$25,600.
The aviation website Aero-News.Net named the sonex" target="_blank">Sonex the Plane Of The Year - E-LSA Kit Category for 2006.




Variants


sonex" target="_blank">Sonex
The original model, incorporating a low-wing design, seats two, and a conventional tail. Available as plans or a kit.
sonex" target="_blank">Sonex B
Introduced in April 2016, this model is a modification of the original sonex" target="_blank">Sonex, with an enlarged cockpit for larger and taller pilots, a center "Y-stick", electric flaps and dual throttles as standard. Support for the CAMit 3300 was offered and more room for the Rotax 912 and ULPower UL350i series of engines.
Waiex
In production - Almost identical to the sonex" target="_blank">Sonex, but features a Y-tail. Although similar in looks to a V-tail, the Y-tail has a stub rudder in line with the aft fuselage. The company markets this version under the motto Just Because It Looks Cool. Available as a kit only. First flew on 19 July 2003.
Waiex B
Introduced April 2016 - Same improvements as sonex" target="_blank">Sonex B
e-Flight Waiex
Waiex electric aircraft variant, powered by a DC brushless electric motor, built in 2007 and first displayed at AirVenture in 2009. Available as a kit only. First flew in 2010.
Xenos
In production - motor-glider development of the Waiex with longer wings and the same choice of engines. Available as a kit only.
Onex
(pronounced One-ex by the company) In production - All new design introduced at Airventure 2009. The design features a single seat with folding wings and an AeroVee Volkswagen air-cooled engine.
Teros
(2015) A proposed UAV, developed with Navmar Applied Sciences Corporation using the Waiex airframe powered by a turbocharged Aero-Vee engine.
SubSonex
A single place single engine turbine aircraft similar in design to an Onex, with a Waiex style Y tail. Introduced at Airventure 2009. Powered by a Czech-built PBS TJ-100 turbojet engine mounted above the aft fuselage, with the exhaust exiting between the Y-tail. The SubSonex achieved first engine test runs in December 2009. The engine produces 240 lb (109 kg) of thrust. Originally developed with only a central mono pod wheel, tail wheel and small wing tip outriggers. The prototype developed directional controllability problems during taxi-tests. The SubSonex now has a tricycle landing gear. and was flight tested by Jet-sailplane performer Bob Carlton in August 2011.




Specifications (sonex" target="_blank">Sonex)


Data from manufacturer’s websiteGeneral characteristics
Crew: one
Capacity: one passenger
Length: 18 ft 1 in (5.51 m)
Wingspan: 22 ft 0 in (6.71 m)
Height: 4 ft 8 in (1.42 m) with conventional landing gear, 74" with tri-gear
Wing area: 98 sq ft (9.1 m2)
Airfoil: NACA 64-415
Empty weight: 620 lb (281 kg)
Gross weight: 1,150 lb (522 kg)
Fuel capacity: 16 US gallons (60.6 litres)
Powerplant: 1 × Jabiru 3300 six cylinder horizontally-opposed aircraft engine, 120 hp (89 kW)
Performance

Cruise speed: 170 mph (270 km/h, 150 kn) at 8000 ft
Stall speed: 40 mph (64 km/h, 35 kn) flaps down
Never exceed speed: 197 mph (317 km/h, 171 kn)
Range: 400 mi (640 km, 350 nmi)
Service ceiling: 23,000 ft (7,000 m)
g limits: +6/-3 at aerobatic gross weight or +4.4/-2.2 at utility gross weight
Maximum glide ratio: 11:1
Rate of climb: 1,400 ft/min (7.1 m/s)
Lift-to-drag: 11:1




References






External links



Official website
KitPlanes Flight Review: Waiex B
AVweb guide to the sonex" target="_blank">Sonex and Waiex

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