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Bye Aerospace Project eFlyer: Flight Tests Continue

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Dal Kikin
March 29, 2019

Bye Aerospace, the developer of the eFlyer (formerly Sun Flyer) family of electric aircraft, announced that following venture capital funding from SUBARU-SBI Innovation Fund in November 2018, it has expanded its engineering and operations departments to a larger hangar on Centennial Airport in Denver, Colorado. The new facility will house the engineering and operations departments for the eFlyer family of airplanes (renamed from Sun Flyer) and will make space for recently added employees. The company has more than doubled its staff in the past year.

The eFlyer proof-of-concept is a two-seat all-electric airplane for which flight testing has begun nearly one year ago. Bye Aerospace aims to become the first company to certify an all-electric airplane to Part 23 standards.

2018 was the breakout year for Bye Aerospace, and this year we are focused on flight testing and certification efforts for eFlyer 2,” says George E. Bye, CEO, and founder of Bye Aerospace. “The prototype eFlyer 2 that flew for the first time with the new Siemens electric propulsion motor on Feb. 8 will be completing the initial phase of Siemens flight tests soon. Then, the airplane will be upgraded to the final production version of the motor that will also go on the future FAA-certified production-conforming versions of the eFlyer 2.

Bye Aerospace is a world leader and innovator of electric and solar-electric aircraft. The company, which founded in 2007, is developing and flight testing prototypes of all-electric general aviation training, personal and business aircraft, and medium and high altitude solar-electric long-endurance UAVs focusing on advances in energy and design efficiencies.

On April 11, Bye Aerospace will be hosting a press conference at AERO Friedrichshafen 2019, at 2 p.m. at Conference Center West.

We will be making several exciting announcements at AERO,” Bye said. “In addition, during the press conference, we will provide program updates on the certification schedule for the eFlyer 2 and discuss our new branding strategy. In addition, we will be available to answer technical questions about the non-proprietary parts of our program.

The eFlyer family of aircraft, including the 2-seat eFlyer 2 and the 4-seat eFlyer 4, aims to be the first FAA-certified, practical, all-electric airplanes to serve the flight training and general aviation markets. Siemens will provide electric propulsion systems for the eFlyer 2 airplane—the 57 lb.-SP70D motor with a 90kW peak rating (120 HP), and a continuous power setting of up to 70kW (94 HP).

Key Features: Li-Ion batteries, thin film photovoltaics, advanced efficient propulsion system - GPS, electric autopilot and servo-control - Proprietary ISR sensor gimbal with daylight and low light video optics - Gross weight in the 30 lbs weight class with a cruise up to 45 knots - Flight Endurance 5 to 7 hours.

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