Qinetix Motor at E-Flight Expo

Dean Sigler Announcements, Electric Powerplants, Sustainable Aviation 3 Comments

QinetiX GmbH in Germany manufactures a motor and controller combined in one case to lower weight and simplify installation.  Their QPD-40, shown at the Aero Friedrichshafen E-Flight Expo and on their web page, seems to exemplify those goals.  Its 12 kilogram (26.4 pound) weight and 40 kilowatt (53.6 hp.) output gives it a power-to-weight ratio of 3.2 kilowatts per kilogram (2 horsepower per pound). Running on 60 Volts at a maximum 680 Amperes, the motor produces 212 Newton-meters (156.4 foot-pounds) of torque, swinging a propeller at only 1,800 rpm, allowing for quiet operation.  The liquid-cooled stator and power electronics will require some form of heat exchanger, but probably with fairly low cooling drag overall. Only 90 millimeters (3.54 inches) thick …

Klaus Burkhard and the Archaeopteryx

Dean Sigler Electric Powerplants, Sustainable Aviation 0 Comments

Klaus Burkhard is a sailplane pilot exploiting the air currents over his native Germany in 120-kilogram (264-pound) ultralight machines (most of which weigh far less) – which may become a part of an increasingly electrified sport.  He wrote this to your editor in response to recent coverage of the electric version of a record-setting ultralight sailplane. “I just came over your interesting website, reading your blog about the Swiss Archaeopteryx, where you described the Archaeopteryx as a high-end hang-glider, publishing a picture from an older version in ‘open’ variety. “Of course the Archaeopteryx is classified as hang-glider in the OLC (on-line competition)  and also as Class-2 hang-glider within FAI-regulations, as it´s foot-launchable and foot-landable as well, both basic requirements for FAI …

Sunseeker Duo Makes Maiden Test Glide

Dean Sigler Electric Powerplants, Sustainable Aviation 0 Comments

Dr. Seeley shared this video a few hours ago. Eric and Irena Raymond have been crafting their Sunseeker Duo for the last five years, and finally have an airworthy craft, as shown in the video during its maiden flight near Voghera, Italy – new home to the Raymonds. Finishing construction of the world’s first two-seat solar-powered airplane in time for Friedrichshafen’s Aero Expo in April, the pair were honored with pride of place at the international showcase.  “This week we brought the Sunseeker Duo to AERO Friedrichshafen for its public unveiling. The airplane is fresh out of the paint shop, and since it is too large to fully assemble in the Slovenian workshop, it is also the first time that …