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For instance, during a high-thrust phase of flight, like exiting a low earth orbit, the engine could operate continually and provide an Isp similar to that of traditional solid-core design. But during a long-duration cruise, the engine would switch to pulsed mode to make better use of its fuel.
On 28 May 2021, seven years after its first flight and 760 flight hours, the first flight test vehicle or FTV1 (A220-100) was converted into an A220 full-size mock-up at the Airspace Customer Showroom (ACS) located in Toulouse, France. The mock-up will be used by customers who have already selected the A220 and for Airbus to design new cabin ...