Atea - Hybrid-Electric Aircraft

The ATEA hybrid-electric aircraft is a 5-seat eVTOL developed by French aerospace startup Ascendance Flight Technologies, engineered as a low-carbon, low-noise alternative to the helicopter for regional and decentralized aviation.

The Vision

Ascendance was founded by former Airbus E-Fan engineers with a clear ambition: decarbonize aviation without waiting for a hydrogen infrastructure that does not yet exist. ATEA is their answer, a fresh concept in air transport built to serve passenger routes, medical missions, and cargo runs from small aerodromes and city vertiports. It is the first aircraft to embed Ascendance's proprietary propulsive technology, STERNA.

What Makes It

ATEA runs on STERNA, Ascendance's modular hybrid-electric powertrain. The system combines a kerosene-fueled thermal generator with an electric propulsion chain and battery packs, cutting fuel consumption and reducing carbon emissions by up to 80% compared with a conventional helicopter of similar mission. The modular architecture is designed to accept Sustainable Aviation Fuel today and hydrogen tomorrow, extending the aircraft's operational lifespan without a full redesign.

In the Air

ATEA is a true vertical takeoff and landing aircraft, so it lifts off the pad like a helicopter, transitions to fixed-wing flight, and cruises efficiently at 200 km/h. Range is over 400 km and maximum flight time is 2 hours, enough to cover regional and inter-city trips without a refueling stop. Turnaround at the vertipad is 10 minutes. Perceived noise is dramatically lower than a helicopter, opening up urban and residential access. The airframe meets the same stringent safety requirements as conventional aviation, with a design that ensures a safe landing in the event of a single failure, and the dual energy sources of the hybrid propulsion system add native redundancy.

Specifications

• Builder: Ascendance Flight Technologies
• Type: Hybrid-electric eVTOL aircraft
• Propulsion: STERNA modular hybrid-electric powertrain
• Capacity: 5 seats
• Cruise speed: 200 km/h
• Range: 400 km
• Maximum flight time: 2 hours
• Turnaround time: 10 minutes
• Maximum take-off weight: 2,000 kg
• Missions: Passenger transport, medical, cargo
• Fuel compatibility: Kerosene, Sustainable Aviation Fuel, hydrogen-ready roadmap

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