Propulsion-hydrogen

Readers write about next-generation fighters, future widebodies and the feasibility of hydrogen propulsion in aviation.

The association questions whether airlines can achieve net-zero emissions by 2050, receiving applause from the industry and criticism from environmental groups

Cooling megawatt fuel cells, a hybrid-electric regional jet and a streetwise flying car.

A turbofan dumps its waste heat into the engine exhaust, adding to thrust.

Green Aerospace has been founded by CEO David Green, who previously worked with U.S. electric propulsion unit startup H3X.

There are three lessons to take away from Airbus’ admission that it is delaying its hydrogen-fueled aircraft dream.

Supernal eVTOL breaks cover; Climate Impulse takes shape; monitoring battery health; autonomous aerial application.

The zero-emission airliner delay leaves advancing hydrogen to startups that are focusing on retrofits and smaller aircraft.

Sustainable aviation fuel is key to achieving net-zero emissions, while hydrogen fuel takes a back seat.

Airbus says it remains committed to bringing a hydrogen-electric commercial aircraft to market.

Airbus is slowing ambitions to develop a hydrogen-fueled airliner by the mid-2030s but is expanding nearer-term plans to flight test unducted and ducted sustainable aviation fueled-engines for its next-generation single aisle.

ZeroAvia says it has reached Stage 2 of the FAA’s G-1 issue paper process to establish the certification basis for the 600-kW electric propulsion system.

The challenge was launched in November 2023 with round one awards to Cranfield Aerospace Solutions, Exeter Airport Consortium and ZeroAvia in February 2024.

Novel hydrogen hybrid; NASA eyes cryogenic testing for aviation; Partners promote electric aviation; Clean-sheet firefighter.

Located at the agency’s Neil Armstrong Test Facility in Sandusky, Ohio, NASA’s Electric Aircraft Testbed (NEAT) is available to industry and academia.

Pratt hopes its novel combined cycle, hydrogen-fueled engine concept may eventually pave the way for a new range of radically more efficient powerplants.

Engineers must consider fuel tank materials and location when designing liquid-hydrogen-powered aircraft.

The HySIITE engine concept shows promise for a practical zero-emission hydrogen-steam combined-cycle propulsion system.

Readers write about aircraft n-numbers, an airframer triopoly, liquid-hydrogen propulsion tests, firefighting efforts and NASA’s Mars Sample Return.

Funded under the NASA Innovative Advanced Concepts program, the Hy2PASS project is led by Phillip Ansell.

Hydrogen-fuel turboprop; cargo uncrewed air vehicle flies on liquid hydrogen; riblet paint on Boeing 787; BAE battery for Airbus hybridization.

China’s electric first; Europe’s regional certification; Dutch LH2 demo; and South Korean eVTOL.

The Daegu-based company has released video showing an uncrewed tethered hover test of a full-scale prototype of the two-seat HAM-III-2 in December.

Honoring innovators, achievements and leadership, the winners have made impressive contributions in five industry sectors.

Royal NLR plans to convert its Velis Electro battery-powered research aircraft for crewed flight testing of fuel-cell propulsion using liquid hydrogen.