A Dream Nearing Realization

Dean Sigler Electric Powerplants, Sustainable Aviation, Uncategorized Leave a Comment

Certain objects stir deep feelings upon first viewing.  DESiE is one such object. Its name alphabetizes its description, as translated and explained by one of its creators, Wolfgang Liehmann.   D = doppelsitziges = double-seated E = Enten = duck/canard = tail first S = Segelflugzeug = sailplane i = mit integriertem = with integrated E = Elektroantrieb = electrically-powered engine This two-seater, electrically-powered, canard sailplane has been a labor of love, taking 13 years to reach its current stage, and projected to take another three before its first real flight.  In the meantime, diligent toil and breaks for X-Plane simulated flying are leading toward an aircraft that Wolfgang says, “Shows very satisfying behavior with respect to stall and glide properties.” …

Power Up Front

Dean Sigler Uncategorized 1 Comment

Luka Znidarsic and Matija Znidarsic, both experienced sailplane pilots and mechanical engineers in Slovenia, have developed a Front Electric Sustainer, a power system that provides a climb of 1.5 meters per second (198 feet per minute) for their prototype configuration on an 18-meter LAK 17.  They designed their own motor and controller for the application.  The motor is 5 kg (11 pounds), and puts out 15 kW (20.1 horsepower) at 85 Volts.  Total weight for the power package is 35 kg (77 pounds), with batteries in two packs behind the rear spar, balancing the weight of the motor and propeller in the nose. “Front” refers to the motor’s location, right in the nose of the sailplane.  A 0.9 meter (35.4 inches) …