U.S. startup Astro Mechanica plans to take its hybrid-electric supersonic engine into high-altitude and high-speed ground testing this year as it moves toward flying the unique powerplant in 2027 in a ...

European startup Destinus is designing a series of ultra-speedy aircraft capable of reaching Mach 5. Liquid hydrogen combined with jet and rocket engines will allow the plane to cruise at 108,000 feet ...

Electric motors are finally getting good enough in performance to capture efficiency gains from having a second turbine drive an adaptive cycle jet engine. This new jet engine will enable commercial ...

Venus Aerospace is a US startup developing a Mach 9 hypersonic jet known as Stargazer. The ultra-speedy plane would carry up to 12 people and fly some 5,000 miles in just one hour. Insider spoke with ...

Startups developing next-generation aircraft and components have raised over half a billion dollars in venture capital so far this year. Each week we round up travel startups that have recently ...