The Fédération Aéronautique Internationale is assessing Rolls-Royce’s application to have three new speed records officially recognized for flights made in its Spirit of Innovation technology demonstrator, which the aircraft engines group claims is now the world’s fastest all-electric aircraft.
On November 16, the company says, the converted NXT Next kitplane reached a speed of 345.4 mph over a three-km distance, beating the previous top speed of just 132 mph set in 2017 by France’s Jean Luc Soullier in an Extra 330LE aircraft powered by an electric motor developed by Siemens. In subsequent flights at the UK Ministry of Defence’s Boscombe Down research facility, the Spirit of Innovation reached a speed of 330 mph over a 15-km distance, which was 182 mph faster than the previous record, and also set a new record for climbing to an altitude of 3,000 meters (9,843 feet) in 202 seconds (60 seconds faster than the existing record).
In one of the flights, Rolls-Royce says, the aircraft achieved a maximum speed of 387.4 mph, and it is on this basis that it is claiming the world’s-fastest-electric-aircraft record. By way of comparison, this is slightly higher than the top speeds of high-performance single-turboprop aircraft like Daher-Socata’s TBM 900 and Epic’s E1000 GX, both of which can reach around 380 mph.
The Spirit of Innovation was developed by the Accelerating the Electrification of Flight (ACCEL) team led by Rolls-Royce, and benefitted from some government funding. The aircraft was converted to use a 400-kW (500+ hp) electric propulsion system developed jointly by the aero-engines group with battery specialist Electroflight and lightweight motor and controller manufacturer Yasa.
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