The Evektor EPOS ("Electric powered small aircraft"),[1] also called the SportStar EPOS, is a Czech electric ultralight and light-sport aircraft under development by Evektor-Aerotechnik of Kunovice. It was introduced at the AERO Friedrichshafen show in 2013.[2]
The aircraft first flew at the end of March 2013.[1] [2]
The EPOS is based upon the Evektor SportStar RTC, a Fédération Aéronautique Internationale microlight and CS-LSA light-sport aircraft. It uses the RTC model's fuselage, mated to a new wing of longer span. It features a cantilever low-wing, an enclosed cockpit with two-seats-in-side-by-side configuration under a bubble canopy, fixed tricycle landing gear and a single electric motor in tractor configuration.[2]
The aircraft is predominantly made from aluminum sheet. The initial electric motor employed was the Rotex RE X907 of 670NaN0 at 330 volts. In 2014 the design was upgraded with a Rotex RE BB 90-5, a brushless, DC, liquid-cooled powerplant that produces 1000NaN0 at 3,000 rpm and weighs 200NaN0. It is controlled by a MGM Compro HBC-Series V7, 300400/EPOS1 controller with a maximum continuous current of 300 amperes and a maximum supply voltage of 400 volts. Power is supplied by 4 battery containers each with 45 Kokam Company, Ltd. SLPB100216216H cells of 40Ah capacity[3] connected in series, producing 378 volts.[2] [4]