Rolls-Royce is preparing for the first flight of what it hopes will become the world’s fastest electric-powered aircraft.

The aero-engine manufacturer is targeting a 300 mph+ speed record for its Accel (short for Accelerating the Electrification of Flight), an all-electric conversion of a Sharp Nemesis NXT racing aircraft that it plans to fly as early as this month, with an eye toward the first speed record attempts this summer.

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