Sunward ST

The Sunward ST is a Chinese ultralight trike designed and produced by Sunward Tech (Hunan Sunward Science & Technologies Company Limited) of Zhuzhou. The aircraft is supplied complete and ready-to-fly.

Design and development
The ST was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of 450 kg. The aircraft has a maximum gross weight of 450 kg.

The aircraft design features a strut-braced topless hang glider-style high-wing, weight-shift controls, a two-seats-in-tandem open cockpit with a cockpit fairing, tricycle landing gear with wheel pants and a single engine in pusher configuration.

The aircraft is made from bolted-together aluminum tubing and composites. It uses a double surface Grif Hazard wing, made by the Italian company Grif Italia. The 10.38 m span wing is supported by struts and uses an "A" frame weight-shift control bar. The powerplant is an Austrian-made twin cylinder, liquid-cooled, two-stroke, dual-ignition 64 hp Rotax 582 engine or four cylinder, air and liquid-cooled, four-stroke, dual-ignition 80 hp Rotax 912UL engine.

The Rotax 582-equipped model has an empty weight of 198 kg and a gross weight of 450 kg, giving a useful load of 252 kg. With full fuel of 60 L the payload is 209 kg.

Variants

 * ST582
 * Model powered by a Rotax 582 two-stroke powerplant. Designed for flight training and aerial work, an agricultural aircraft version was introduced in 2012 with crop-spraying gear. This includes a 120 kg-capacity tank that can cover 13.34 sqkm.


 * ST912
 * Model powered by a Rotax 912UL four-stroke powerplant.