Heart Aerospace receives $2.9M FAA grant for ES‑36 hybrid‑electric propulsion

Heart Aerospace was awarded $2.9 million by the FAA for its hybrid‑electric propulsion system for the ES‑36 and will match the award, bringing total project investment to $5.8 million over 24 months.

The funding backs Project HYPER, which is developing and testing a megawatt‑class turbogenerator for the ES‑36, with each of the aircraft’s two nacelles housing a generator that can produce electricity in flight to supplement battery power; initial testing will evaluate generators, batteries and electric motors together before flight demonstrations on a pre‑production ES‑36 scheduled to fly in 2028.