December 17, 1903

Dean Sigler Sustainable Aviation Leave a Comment

December 17, 1903, is a day to be remembered for all who fly.  That was the day 121 years ago that two bicycle mechanics from Dayton, Ohio made history with the first powered, controlled flight of an airplane. The controlled part is most important.  Others had leaped off hills in early versions of hang gliders, their bodies thrashing about in various ways to try to maintain control.  The Wright Brothers, Orville and Wilbur, managed the trick with a combination of wing warping for banking, elevators for altitude control, and rudders to trim the turning motion of the airplane.  Their aerodynamic contributions came from careful study and clever adaptation of their cycling craft. Their powerplant, a 12-horsepower, 120-pound four cylinder engine, was the product of Charles E. Taylor, a machinist and mechanic in their shop.  Taylor was limited in the equipment at hand, and drilled holes around the outline of the crankshaft o for the engine on a steel slab.  He …

Austrians, Swiss, Chinese Launch Three New Electric Aircraft

Dean Sigler Batteries, Electric Powerplants, Fuel Cells, Solar Power, Sustainable Aviation Leave a Comment

Three companies with divergent backgrounds launched three new electric aircraft in the last few months. 1973, and Its Descendants are Still Electric As noted in the blurb for its historic YouTube video for its first electric flight 46 years ago, “HB Flugtechnik is the pioneer in electric flight. The world’s first electric powered flight took place on October 21st, 1973 in Austria. 50 years later this company is still in business and doing better than ever. Given, that we talk about the aviation business, this is an outstanding and remarkable achievement. Today, HB Flugtechnik located at the now newly refurbished airfield Hofkirchen LOLH is not only the major MRO (Maintenance, Repair Organization or Maintenance, Repair, and Overhaul) for aircraft in Austria, it is still working on the new frontier of electric flight.” In a 2012 presentation at the AVT-209 Workshop in Lisbon, Portugal in 2012, Dr. Martin Hepperle of the DLR Institute of Aerodynamics and Flow Technology in Braunschweig, Germany …

Fifth Anniversary for Electravia Ultralight’s First Flight

Dean Sigler Electric Powerplants, Sustainable Aviation 2 Comments

Anne Lavrand, founder and head of Electravia, has over 35 different electric aircraft to her credit, having powered everything from paramotors to a world speed record-holding Cri-Cri  and a speed and altitude record-claiming MC-30. The story officially began five years ago today, though, with a 48-minute flight by an ultralight Souricette, a Michael Barry design with an Electravia-prepared Lynch brushed motor, golf-cart type controller and lithium polymer batteries . In an article from The Times of London, it was given credit as the, “First flight in a conventional light aircraft powered by an electric motor,” and as such a model of frugality.  Barry’s airplane, motor, and batteries might set an owner/builder back 10,000 to 15,000 euros ($13,000 to $19,500) and cost about one euro ($1.30) per hour to fly.  Ms. Lavrand has continued to demonstrate that such a simple setup can provide reliable, inexpensive service with her ongoing work in her own shop and developments with various designers. Electra flew …