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NOVAdev Unveils Hydrogen Flux Capacitor™ For Decarbonizing Large Commercial Aircraft

Image showing NOVAdev's scalable Hydrogen Flux Capacitor as part of a hydrogen storage system on an advanced turboelectric air freighter designed for a 3,200 nautical mile range.

NOVAdev Hydrogen Flux Capacitor is scalable for large and small aircraft applications. Shown here as an element of the hydrogen storage system for a 3,200 nautical mile advanced turboelectric air freighter.

Transformative innovation holds hydrogen in a solid-state at lower pressure and 30% greater storage density than liquid hydrogen alone.

We store hydrogen as a compact solid at low pressure. That is as transformative for hydrogen as LEDs for lighting.”
— Michael Kramer, NOVAdev Founder & CEO

HUNTINGTON BEACH, CA, UNITED STATES, April 2, 2024 / -- NOVAdev Inc., a developer of hydrogen transportation and storage technologies, today unveiled its Hydrogen Flux Capacitor™ (HFC™) design for mainline commercial aircraft requiring transcontinental and transatlantic range. The company is developing its innovative and scalable Hydrogen Flux Capacitor – based on NASA technology – for small, regional and mainline hydrogen aircraft applications.

Airborne hydrogen storage systems are a crucial enabling technology for the aviation industry in meeting its sustainable climate goals, and hydrogen is a key element of the nation’s sustainable climate agenda. Hydrogen combustion releases no carbon emissions but storing hydrogen on aircraft is a complex challenge. While being only 1/3 the weight of jet fuel, it also requires four times jet fuel’s storage volume (for equivalent energy). In addition, Federal Aviation Administration (FAA) certification requires safety measures that drive a substantial portion of a hydrogen systems’ weight and cost. Both liquid and gaseous hydrogen storage approaches, while being well suited to ground transportation applications, face difficult challenges in efficiently conforming with the shape, volume and weight restrictions of aircraft structures, as well as safety engineering for certification.

Remarkably, NOVAdev’s Hydrogen Flux Capacitor stores hydrogen in an “adsorbed solid-state” yielding 30% greater density than liquid hydrogen tanks (and a fraction of the weight and volume of high-pressure gas cylinders). Those features greatly reduce the volume, weight, cost and operational complexity of airborne hydrogen fuel storage. Due to its innovative design and low 15 to 30 psi storage pressure, the Hydrogen Flux Capacitor can be shaped to more efficiently conform with aircraft structures. Most importantly, hydrogen storage in a solid-state form eliminates key failure modes associated with liquid and gas storage, enhancing the HFC’s safety characteristics and significantly easing its testing requirements for FAA certification.

“What we are developing truly addresses aviation’s biggest issues with hydrogen which are volume, weight, cost and safety,” explains Michael Kramer, NOVAdev founder and CEO. “Our Hydrogen Flux Capacitor requires only low-cost, commercial off-the-shelf materials and readily scales for large or small aircraft. It truly enables hydrogen’s efficient integration into aviation in ways that other systems cannot and offers outstanding safety benefits. We store hydrogen as a compact solid at low pressure. That is as transformative for hydrogen as LEDs for lighting.”

Testing to date by NOVAdev and NASA has demonstrated the technology’s basic storage capabilities, operation and performance as well as its potential to scale for large and small applications. Tests simulating a catastrophic accident where the HFC is ruptured demonstrated exceptionally slow sublimation – like solid dry ice that evaporates without liquefying – a key safety feature for airborne hydrogen storage.

How The Hydrogen Flux Capacitor Works

NOVAdev’s Hydrogen Flux Capacitor produces hydrogen gas on demand for fuel cell electric or turboelectric systems. It is fueled with liquid hydrogen which rapidly adheres, or technically “adsorbs”, to nano-material filling an insulated container. Gaseous hydrogen is then released by a controlled thermal input system. Complex molecular forces cause adsorbed hydrogen to assume a “solid-state" condition that is only 2/3 the volume of the liquid hydrogen used for fueling. That property is transformative for airborne systems where volume efficiency is crucial, hydrogen in liquid form requires special handling, and sloshing of liquid hydrogen in storage poses challenges for aircraft operation and fuel efficiency.

NOVAdev is exploring applications for Hydrogen Flux Capacitor technology across markets where its smaller and flexible form factor is an advantage, but the company’s immediate focus is aviation. “We’ve done design studies of the HFC for 737 and A320 scale passenger transports, regional turboprops such as the ATR-72, and even the Cessna 208 Cargomaster,” explained Richard Bartz, NOVAdev vice president of business development. “Our latest work is focused on aircraft of the 757 and 767 size, where flights regularly range 3,000 nautical miles and more for transcontinental and transatlantic routes. We’re supporting hydrogen aircraft in development today and needing a hydrogen storage solution that is operationally efficient as well as safe, cost effective, and most importantly certifiable.” The company believes urban air mobility, rotorcraft, and drones are also high potential markets for the technology.

Why Hydrogen?

Commercial air transports burn huge amounts fuel and their associated carbon emissions are a target of both climate and social advocates, as well as regulatory authorities. Hydrogen’s zero-carbon emissions feature will be an important adjunct to nearer term Sustainable Aviation Fuel initiatives, which reduce but don’t eliminate carbon emissions. Apart from hydrogen supply of the substantial quantities needed – now a national priority – airborne hydrogen storage is the most prominent constraint to its adoption in aviation.

Mr. Kramer stated “Aviation’s problem is that carbon-based fuels, including sustainable aviation fuels and bio-fuels, get you only so far down the path to sustainable climate impact goals. But hydrogen will take you there faster and cleaner. In that regard our Hydrogen Flux Capacitor is a transformative solution, as no other technology can match its safety, efficiency, adaptability, low-cost and certifiability characteristics. It is a primary enabling technology for hydrogen aviation.”

NOVAdev is engaged with aircraft developers, airport infrastructure authorities, aircraft operators and investors in developing the Hydrogen Flux Capacitor system.

Hydrogen Flux Capacitor™ and HFC™ are trademarks of NOVAdev Inc.

About NOVAdev
NOVAdev is engaged in development of commercial aircraft and airborne systems that enable earth‑friendly, zero-carbon aviation at mainline scale. NOVAdev is an innovation company, applying novel solutions to aerospace engineering challenges. To learn more visit

Rick Bartz
NOVAdev Inc.