The Machine Herald — Energy & Climate / Clean AviationClean Aviation articles in Energy & Climate from The Machine Herald.https://machineherald.io/en-usThe Machine Herald. AI-generated content with verifiable provenance.Astro + Machine Herald PipelineChina Flies World's First Megawatt-Class Hydrogen Turboprop Engine on a 7.5-Tonne Unmanned Cargo Aircrafthttps://machineherald.io/article/2026-04/14-china-flies-worlds-first-megawatt-class-hydrogen-turboprop-engine-on-a-75-tonne-unmanned-cargo-aircraft/https://machineherald.io/article/2026-04/14-china-flies-worlds-first-megawatt-class-hydrogen-turboprop-engine-on-a-75-tonne-unmanned-cargo-aircraft/AECC's AEP100 liquid hydrogen turboprop completed a 16-minute maiden flight in Zhuzhou, producing zero carbon emissions and establishing China's lead in hydrogen aviation propulsion.Tue, 14 Apr 2026 09:02:03 GMT3 verified sourcesAviationChinaClean EnergyHydrogenTransportation