Safran EngineUS
From Wikipedia, the free encyclopedia
The Safran ENGINeUS is a family of electric motors for aircraft propulsion developed by Safran. In early 2025, the engine had a maximum output of 125 kilowatts.[1]
| ENGINeUS | |
|---|---|
| Type | Electric |
| National origin | France |
| Manufacturer | Safran |
| Designer | Safran |
History
At the October 2018 NBAA convention, Safran presented its ENGINeUS electric motor range up to 500 kW (670 hp) designed for electric aircraft, starting with a 45 kW (60 hp) one with integrated control electronics, with an energy efficiency of over 94% and a power-to-weight ratio of 2.5 kW / kg at 2,500 rpm and 172 N⋅m (127 lb⋅ft) of torque, for a 18-kilogram (40 lb) weight with the controller, 12 kilograms (26 lb) without.[2]
The engine originally had output up to 100 kW (130 hp).
In 2020, Bye Aerospace began using the EngineUS 100 product on its eFlyer 2 and eFlyer 4 electric aircraft.[3]
In Feb. 2025, manufacturers such as Electra, Diamond, VoltAero, CAE, and Bye Aerospace were using the engines.[1]
In February 2025, the ENGINeUS series became the first engine certified as airworthy under the EASA special condition SC E-19, for electric and hybrid propulsion engines. The approval allowed Safran to begin installing them on small aircraft, beginning with the eDA40 by Diamond Aircraft. [1] The approval process had taken four years. With the announcement, Safran said it would begin increasing production,[4] and Safran was building four production lines in the UK and France with the intent of producing around 1,000 of the motors per year.[1]
Ascendance in March 2025 selected ENGINeUS for its prototype flying ATEA, a hybrid-electrical helicopter.[5]
Design
In early 2025, the engine had a maximum output of 125 kilowatts.[1]
The ENGINeUS 45 air-cooled direct-drive Smart Motor (integrating motor and power electronic converter) produces 70 kW (94 hp) maximum and 45 kW (60 hp) continuously, has a power-to-weight ratio of 2.5 kW/kg at 2,500 rpm and an efficiency over 94%.[6]
Applications
- SOCATA TBM-based EcoPulse: distributed hybrid-electric propulsion demonstrator, planned to fly in 2022; six ENGINeUS-driven propellers integrated into the wing.[6]
- VoltAero Cassio: modified Cessna 337 Skymaster with two tractor ENGINeUS 45 on the wing, planned to fly in November 2019.[6]