Bye Aerospace announced an eight-seat all-electric twin turbo-prop class airplane, the eFlyer 800. Performance estimates for the eFlyer 800 include up to 320 knot cruise speed, 35,000 feet ceiling and 500 nm range with 45-minute IFR reserves at normal cruise speed of 280 knots.
Safety features include two wing-mounted electric motors, each with dual redundant motor windings, quad-redundant battery packs and a full airplane parachute. Additional potential features include emergency auto-landing system; intelligent algorithm ensuring envelope protection; terrain avoidance and routing for emergency auto-land; and an option for supplemental power solar cells and in-wheel electric taxi.
The airplane’s 8-seat configuration consists of up to seven passengers and one or two pilots. The eFlyer 800 will have only one-fifth the operating costs of traditional twin turboprops and is geared for the air-taxi, air-cargo, regional and charter aircraft markets.
The eFlyer 800 is the first all-electric propulsion technology airplane that achieves twin-turboprop performance and safety with no CO2 and extremely low operating costs. This type of remarkable economy and performance is made possible by the electric propulsion system and advanced battery cell technology that results in significantly higher energy densities.—George E. Bye, Bye Aerospace CEO
Bye Aerospace and Safran are currently assessing the most efficient electric powertrain for the eFlyer 800 (dual ENGINeUS electric motors and GENeUSGRID electric distribution and network protection system).
Safran product lines with the ENGINeUS motors, rated from 50kW to 500kW/1MW and GENeUSGRID systems, perfectly fit with the Bye Aerospace portfolio of e-aircraft. Building upon our successful cooperation on eFlyer 2 and eFlyer 4, we are very proud to bring our best expertise to support Bye Aerospace in the design of the new eFlyer 800.—Hervé Blanc, Executive Vice President and General Manager Power with Safran Electrical & Power
Safran presented the first electric motor from its ENGINeUS range designed for future hybrid and electric aircraft, at NBAA’s Business Aviation Convention & Exhibition (NBAA-BACE) in Orlando, Florida in 2018. The ENGINeUS 45 motor has a continuous power of 45kW. It has built-in, dedicated control electronics with an energy efficiency of more than 94%. It also has an excellent power-to-weight ratio of 2.5kW / kg at 2,500rpm. The ENGINeUS product line will eventually include a range of electric motors with a power output of up to 500kW.
Bye said eFlyer 800 customer deposit agreements are complete, and several are being developed with US and European air-taxi, air-cargo and air charter services. Details will be forthcoming when the agreements are finalized.
Bye Aerospace is in the process of obtaining FAA Part-23 certification for the eFlyer 2 for the professional flight training mission and the four-seat eFlyer 4 for air taxi, cargo and advanced training uses.