(Power up to)
1 MW
(Fuel savings up to)
-40%
(CO2 emissions up to)
-40%
(Sterna)
Unique technology for more sustainable aviation
Sterna is a modular, scalable system that combines two energy sources to progressively reduce aircraft emissions and achieve in-flight Net Zero.
(Our technology)
Hybrid electric propulsion
system
A modular and scalable combination of two sources of energy (fuel + battery).
A hybrid-electric aircraft uses a mix of two energy sources: electric batteries, used during take-off and climb, to benefit from the instantaneous release of optimized, high-power engines that can run on Jet-A1, and sustainable aviation fuel or hydrogen tomorrow, for low-energy phases of flight, such as cruise.
Conventional aircraft
Aircraft equiped with Sterna
A conventional aircraft engine is usually sized for take-off and climb thrust requirements. This leads to an oversized engine for cruise flight, where most of the fuel is burned. Thanks to Sterna, we can decouple these 2 phases and optimize them to reduce overall fuel consumption over the entire flight.
During take-off and climb, the battery is used to provide high power for short periods. Thus, the powertrain does not need to provide the power during this phase, and take-off and climb rating can be removed and/or the powertrain downsized.
During cruising, the powertrain is used at maximum efficiency, as it is now specifically sized to achieve this level of performance.
Where innovation
takes flight
What does Sterna look like in an airplane?
Sterna is a set of technologies and components for aircraft and rotorcraft OEMs to make them more sustainable, whether for new developments or retrofitting existing aircraft with an STC*. Sterna can take several shapes depending on your aircraft and the program objectives, from turboprops to regional planes.
Hybrid Operating System
Energy management system - handles the energy split in the system
Hybrid Core
Electrical power box - connects all components together safely & distributes the energy in the system
We’re taking aviation
to new heights.
Company
Ascendance Recognized as a Key Player in the Future of the Economy by Bpifrance
We’re honored to be featured in Bpifrance's mapping as a key player shaping the economy and its future.
Events
Ascendance Part of the FrenchTech2030: Shaping the Future of French Industry
We’re proud to announce that Ascendance is part of the #FrenchTech2030 program, an ambitious initiative supporting France's industrial reinvention and sovereignty.
Events
Where Innovation Takes Flight: Highlights from Jean-Christophe Lambert at BIG
At the 10th edition of BIG, Jean-Christophe Lambert joined a dynamic roundtable on the "Net Zero Emission Goal" and he also took the BANG main stage with an inspiring speech on innovation.
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