Doubling Down with Ascendance

Dean Sigler Electric Powerplants, Hybrid Aircraft, Sky Taxis, Sustainable Aviation, Uncategorized Leave a Comment

Ascendance Flight Technologies, a French firm developing an electric Vertical Take Off and Landing (eVTOL) aircraft, has doubled down on its original, smaller airplane.  Originally a four-seat, hybrid-powered machine with three lift fans, Atea has retained the name, but grown considerably. Holey Wings Atea now has eight lift fans and two horizontal propellers arranged in a push-pull configuration.  It can carry its five passenger in a “Skyview cabin” for 400 kilometers (248 miles)  Powered by its modular “Sterna” hybrid-electric propulsion system, the craft will hit as yet unspecified speeds, but within a two-hour range, that will probably be about 124 mph. An expansion of their original design, Atea comes from a group of former Airbus e-Fan engineers and technicians.  The …

OXIS Energy, Bye Aerospace Develop Lithium-Sulfur Cells

Dean Sigler Batteries, Sustainable Aviation Leave a Comment

Diane Simard, Senior Vice President and a member of the Board of Directors for Bye Aerospace, sends your editor occasional news from that company.  The latest involves a collaboration with OXIS Energy in England to develop new Lithium-Sulfur battery cell technology that shows great, and (even better) near-term promise. Ready to start in September, the project will develop cells that will, ”Achieve the higher energy density required for such aircraft,” referring to Bye’s eFlyer 2 and eFlyer 4 light aircraft.  A big jump over currently available batteries, OXIS is now evaluating cells that produce 400 Watt-hours per kilogram, with a promised leap to 500 kW-hr by next year.  The best lithium-ion cells at the pack level available now manage 260 …