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Hybrid eVTOL design aims to use Jet A or sustainable aviation fuel for cruise, batteries for takeoff
Summary
Presenters described Amperes hybrid eVTOL architecture: a gas power plant (Jet A or sustainable aviation fuel) provides base load during cruise while batteries supply instant peak power at takeoff; FAA speakers said this reduces the need for new charging infrastructure.
Company and FAA presenters outlined the hybrid architecture Ampere plans to demonstrate in Utah, emphasizing a mixed fuel/electric approach intended to leverage existing aviation infrastructure.
"In a hybrid system, you use a gas power plant, in our case here, either a Jet a or sustainable aviation fuel engine for the base load power," the Ampere presenter said, adding that electricity is then used for "instant peak power capability" on takeoff and climb. Presenters said that approach lets demonstrations proceed without building charging stations for the aircraft during early stages.
FAA officials argued that the hybrid design could make initial operations more cost-effective and less disruptive to existing infrastructure, because aircraft could rely on existing fuel systems during demonstrations. The briefing did not include engineering specifications, battery sizes, or range numbers; those technical details were not specified in the transcript.
Speakers also framed cargo and logistics as primary near-term use cases for the technology, with passenger services presented as a possible later phase following further demonstrations and regulatory review.
