Front Electric Self-Launcher on a Silent

Dean Sigler Electric Powerplants, Sustainable Aviation 3 Comments

Slovenian father-son team Luka and Matija Znidarsic developed a unique approach to keep a sailplane aloft once it’s launched through traditional aero-tow or winch methods.  Their outrunner  brushless motor produces 15 kilowatts (20 horsepower)at 100 Volts continuously, and can generate 25 kW (33 horsepower) for short bursts.  Weighing  6.5 kilograms (14.3 pounds) in a 180 millimeter (7 inches) diameter, 80 mm (3.15 inches) long package, the motor can be easily set into the modified nose of a conventional sailplane, with a one-meter diameter propeller folding neatly into the streamlines of the fuselage.  It has powered a LAK-17A 18-meter sailplane, showing a positive rate of climb when energized.  In a big sailplane like the LAK, the motor allows shortening expensive tows or extending flight when thermals become iffy. Now, …