Siemens Motors announced the first public flight of their SP260D motor in an Extra 330LE aerobatic aircraft – although the motor had made its maiden, but not so public, flight on June 24. Putting out 260 kilowatts (348.5 horsepower) in near silence according to Siemens, the motor will certainly be capable of putting the Extra through its paces. The motor weighs only 50 kilograms (110 pounds), and with its Siemens inverter adds little weight to the nose of the Extra. Pipistrel-designed battery packs grouped behind it push the power-pack weight toward the center of gravity, which should enhance handling qualities. As Electronics Weekly reports, “Support structures have been on a finite element analysis diet. The aluminum ‘end shield’, for example, …
Needed: a Four-Seat Light Airplane for Electrifying Research Project
We’d all love to have a hybrid electric airplane – inexpensive to fly with great range and guilt-free airport hamburgers. Jeffrey Engler, who heads an innovative project devoted to green aviation, explains: “Our plan is to convert a Piper Cherokee, Cessna 172, or similar light four-seater to electric hybrid power. The airplane should be airworthy with a serviceable engine and avionics. We don’t want a hangar queen or an airport relic – just a flyable, reasonable example at a reasonable price.” Aeronautics students at Purdue University, as part of their graduate work, are backing this program. Jeffrey reports, “The rock stars at Purdue presented their first interim report yesterday, including a background on electric aviation and their initial evaluation of the Cherokee retrofit. It’s …
Tomas Brødreskift to Appear at SA Symposium
With the upcoming Sustainable Aviation Symposium (May 6-7, 2016) already packed with stellar presenters, we are excited to have Tomas Brødreskift join the faculty. An industrial designer whose skills in product and process design, project management, ergonomics, and visual and CAD design have led and enabled him to bring his amphibious Equator P2 Xcursion to life will share his expertise and experiences with attendees at the Sofitel San Francisco Bay. Tomas’ demonstrated skills in designing everything from Hardrocx mountain bikes to an array of consumer goods have helped prepare him to guide the Xcursion from concept to final product. Since he has overseen every step of the design/build process, the airplane is a reflection of its unique specification and its …
The Sustainable Aviation Symposium – A Wealth of Knowledge
Coming May 6th and 7th, the first-ever Sustainable Aviation Symposium will take place at the Sofitel San Francisco Bay Hotel. This year’s presenters include an international array of accomplished talent in aerodynamics, power, and energy storage, with a few surprises on tap. Keynote speakers include: NASA Chief Scientist Dennis Bushnell PADA Trophy winner and Pipistrel Designer Dr. Tine Tomazic Dr. Joseph Kallo of the DLR (Germany’s NASA) Lehigh University’s Dr. Justin Jaworski Pelican Aero Group’s Philip Barnes Additional presentations include Nobel Prize winner Dr. Benjamin Santer of the Intergovernmental Panel on Climate Change; Eric Raymond, the highest time solar pilot in the world (his latest 6-seat solar aircraft pictured above); Dr. Yi Cui of Stanford University with the latest in battery …
Caging Silicon Anodes with Graphene
Dr. Yi Cui of Stanford University has expanded the idea of “battery” to include conductive ink on paper, fruit-like clusters of energy-storing capsules, and now, nano-sized graphene cages in which the energy can romp like a hamster in a plastic ball. He will be on hand at this year’s Sustainable Aviation Symposium on May 6, at the Sofitel San Francisco Bay hotel. His pioneering work with silicon as an electrode material goes back at least ten years, and has focused on overcoming silicon’s two major problems in battery use. Silicon expands and begins breaking down during repeated charge-discharge cycles. It reacts with battery electrolyte to form a coating that progressively destroys performance. The combination of crumbling and coating finally makes the …
