ZeroAvia Receives FAA G-1 for 600kW Electric Propulsion System

ZeroAvia announced that it has reached consensus on the Certification Basis relating to its 600kW electric propulsion system (EPS) with the Federal Aviation Administration (FAA), having received a G-1 Issue Paper (stage 2) and formally confirmed agreement with its contents.

The G-1 represents a key milestone on the journey towards final certification of the company’s EPS with the U.S. regulator, and also on its path to certifying its first full hydrogen-electric powertrain (of which the EPS is a core system) with the UK Civil Aviation Authority. The issue paper designates the applicable airworthiness regulations specific for ZeroAvia’s EPS, allowing the company to validate its design requirements.

ZeroAvia’s 600kW EPS combines the company’s proprietary inverter and electric motor technology to deliver a highly efficient electric engine with exceptional fault tolerance and specific power. The 600kW EPS system comprises four ZeroAvia 200kW continuous power bidirectional inverters converting DC power to AC to supply ZeroAvia’s direct drive motor, capable of 2,200 rpm. Potential applications for the 600kW EPS include battery, hybrid and fuel cell electric fixed-wing aircraft, rotorcraft and Unmanned Aerial Vehicles.

The 600kW system was designed as part of ZeroAvia’s wider ZA600 hydrogen-electric powertrain, designed for up to 20 seat commercial aircraft. By advancing the aerospace applicability and performance of power electronics and electric motors, the company is progressing discussions to supply the electric propulsion system separately to other clean aviation innovators. Last year ZeroAvia opened a 136k sq ft Propulsion Center of Excellence in Everett, WA to produce these electric propulsion systems.

The electric propulsion system is one part of the company’s deep portfolio of fuel cell, power electronics and electric motor technology developed thanks to a strong commitment to vertical integration, and ZeroAvia launched a component offering to serve the market for novel electric air transport applications in May 2024.

ZeroAvia has already extensively tested a prototype of the ZA600 hydrogen-electric engine aboard a Dornier 228 aircraft at its UK base. The company has an engineering partnership with Textron Aviation as it looks to secure a supplemental type certificate for the Cessna Grand Caravan as the launch airframe for the ZA600.

ZeroAvia has also performed advanced ground tests in the US and UK for the key building block technologies for the ZA2000 system, including cryogenic tanks or LH2 and proprietary high-temperature PEM fuel cell and electric propulsion systems. The ZA2000 will support up to 80 seat regional turboprop aircraft such as the ATR 72 and the Dash 8-400.

www.zeroavia.com

Nicolas Bony