ZeroAvia has developed a world-first, high-performance compressor for fuel cell-based aviation propulsion systems, including the company’s first ZA600 hydrogen-electric powertrain.
Hydrogen fuel cells promise to deliver true zero-emission flight by delivering electrification, but one key challenge is delivering the high flow of oxygen for the chemical reaction in the stacks to provide sufficient quantities of electricity to power the aircraft. At higher altitudes, air compressors need to be powerful and efficient, while not adding undue weight to the propulsion system and thus impacting payload and range.
The compressor is a world first, designed and tested specifically to comply with all requirements pertaining to hydrogen fuel cell-powered aviation propulsion systems. ZeroAvia’s breakthrough enables the company to incorporate the technology as a core part of its first two hydrogen-electric engines: the ZA600 for 9-19 seat aircraft targeting entry-in-service by 2025, and the ZA2000 for 40-80 seat aircraft with EIS targeted for 2027.
Initial testing of the ZeroAvia compressor indicates that it offers highly stable performance across a large range of power and operating environment requirements. Supporting up to 900kW fuel cell systems, the compressor is many times more powerful than any existing fuel cell compressors and offers superior power density.
The performance to date is validation that ZeroAvia’s overarching powertrain will be capable of delivering large commercial, as well as environmental, benefits to airline operators. The company will also leverage the technology to enable enhanced testing of its HTPEM fuel cell stacks for ZA2000 and larger fixed wing and rotorcraft applications.
“The compressor technology we have designed is critical in delivering optimal performance in the final, certified ZA600 engine technology,” said Rudolf Coertze, CTO Hydrogen, ZeroAvia. “Our compressor is an important component of our fuel cell power generation systems, and a world-leading technology advancement for clean aviation in its own right. This really is a major achievement for our turbomachinery engineers and another marquee moment for the company at large.”
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