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Green aviation advances spotlighted at Farnborough Airshow

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Green aviation advances spotlighted at Farnborough Airshow
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The Farnborough Airshow 2024 has brought to light significant advancements in green aviation technology, signaling a potential shift in the regional airliner market. Cranfield Aerospace Solutions (CAeS) is set to conclude the first stage of its Series B funding round by the end of July, enabling it to advance its hydrogen-powered regional airliner project. Despite delays in funding that postponed hardware purchases for its technology demonstrator, CAeS remains committed to launching a converted nine-passenger Britten-Norman Islander into commercial service by 2027.

CAeS plans to replace the Islanders’ piston and turboprop engines with its hydrogen fuel cell system integrated into nacelles on the wing. The company is also exploring other applications for this technology, including uncrewed cargo aircraft and auxiliary power units (APUs) on existing airliners. “We now have a very sophisticated hydrogen fuel cell system that we believe delivers the highest available energy density,” said CAeS chief executive Paul Hutton. The company aims to start flying a technology demonstrator by July 2025 after completing ground tests.

The engineering team has refined its packaging plans for the propulsion system’s components while addressing thermal management challenges. Prospective customers for the hydrogen-powered Islanders include UK regional carrier Loganair, Monte Aircraft Leasing, Germany-based start-up Evia Aero, and U.S. fractional aircraft provider Stratus 9.

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In October 2023, Dronamics agreed to acquire 1,290 CAeS propulsion systems for its Black Swan uncrewed cargo aircraft. At Farnborough, CAeS is presenting a three-dimensional model of the propulsion system and discussing replacing APUs with hydrogen propulsion units ranging from 125 to 500 kilowatts.

Heart Aerospace is preparing to reveal a technology demonstrator for its ES-30 hybrid-electric regional airliner this fall. The Swedish company has reconfigured the propulsion system architecture to an independent hybrid configuration allowing more all-electric missions. Heart aims for initial EASA type certification in 2028 despite extensive engineering work required by recent design changes.

Deutsche Aircraft has delayed the projected service entry for its D328eco regional airliner until late 2027 following an internal review and discussions with prospective customers. The delay results from unspecified regulatory changes affecting certification processes. The D328eco will feature new Pratt & Whitney PW127XT-S engines initially running on sustainable aviation fuel with plans for a future hydrogen-powered version.

French start-up VoltAero plans test flights later this year with a prototype of its Cassio hybrid-electric aircraft. VoltAero’s powertrain incorporates Safran EngineUs electric motors, a turbogenerator, and an aft-mounted pusher propeller.

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