Where Are They Now? The Electric Phoenix

Dean Sigler Electric Powerplants, GFC, Sustainable Aviation 2 Comments

MGM COMPRO, a Czechoslovakian motor and electronics supplier, announced that they had participated in finally making the Phoenix motorglider an electric machine.  Jim Lee and co-pilot Jeff Shingleton had originally intended to fly the airplane at the Green Flight Challenge three years ago, but contented themselves with competing in the Rotax-powered machine and “only” winning third place in the event.  Their competing did elicit a great deal of interest in the machine, though. MGM says, “We are very glad that we can present you a very successful project, [the] U-15 Phoenix of the Czech entrepreneur Martin Stepanek.  MGM COMPRO plays a decisive role in a development of industrial controllers for this fully electric aircraft. As described in the blog three …

That’s No Yolk!

Dean Sigler Electric Powerplants, GFC, Sustainable Aviation 0 Comments

Dr. Cui is at it again!  In a seemingly endless stream of announcements, his work with silicon anodes keeps promising improvements in battery capacity and longevity.  The Stanford professor and his team, Stanford’s National Accelerator Laboratory (Formerly the Stanford Linear Accelerator Center), and the Environmental Molecular Sciences Laboratory (EMSL) at Pacific Northwest National Laboratory all published papers on their latest joint accomplishment. Conceptual drawing of silicon filling carbon shell, TEM photo of actual expansion, and life cycle analysis for yolk-shell batteries Expansion and contraction of anodes and cathodes during charging and discharging of batteries causes flexing and eventual breakdown of a battery’s internal components.  Cui and other researchers have tried various strategies to mitigate or eliminate this flexing, but the …

Green Flight Challenge – Day Two

Dean Sigler Electric Powerplants, GFC, Sustainable Aviation 1 Comment

Monday morning, September 26, many of us had our first view of an electric airplane in flight. After the weighing team rolled Jim Lee and Jeff Shingleton’s Phoenix motorglider from the hangar onto its impound location and completed initial weigh-ins for the remaining three aircraft, the airplanes were staged for the first flying event of the Green Flight Challenge sponsored by Google. With technical inspections and weighing completed, the four airplanes lined up to check their noise levels and their ability to clear an imaginary 50-foot barrier atop a cherry picker  2,000 feet from the top of the number “9” on runway 19 at Santa Rosa, California’s Charles M. Schulz Sonoma County Airport.  As each aircraft rolled out to their …