<ul><li>NASA has awarded five research grants worth $11.5 million to advance sustainable aircraft concepts.</li><li>The awards aim to identify transformative solutions for a more sustainable air travel industry.</li><li>Two of the awards focus on specific concepts, including an electric aircraft prototype and a cryogenic liquid hydrogen fuel source with a blended wing fuselage design.</li><li>The other three awards will explore new fuels, propulsion systems, and aircraft technologies for sustainability.</li></ul>

NASA awards ‘sustainable’ aircraft concepts $11.5M

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