from the more-of-a-muffled-'pop' dept.
Boom recently lost its jet engine partner for the Overture supersonic jet, and other major engine manufacturers aren't interested in the project either, Insider has reported. After Boom signed an "engagement agreement" with Rolls-Royce for supersonic jet engines back in 2020, the latter announced last week that it had left the project. Now, other major jet engine manufacturers including Pratt & Whitney, GE Aviation, Honeywell and Safran Aircraft Engines have told FlightGlobal they're not currently interested in supersonic aircraft.
Boom said that the project is still on track, though, and that it will soon announce an engine partner. "We can reconfirm our intention to announce Boom's selected engine partner and transformational approach for reliable, cost-effective, and sustainable supersonic flight, later this year." Boom told Insider. The company has 20 airplanes on order from American Airlines and 15 from United. It plans to build build a factory in California and start flying passengers by 2029.
For its part, Rolls-Royce said that "after careful consideration... [we] have determined that the commercial aviation supersonic market is not currently a priority for us and, therefore, will not pursue further work on the program at this time."
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American Airlines on Tuesday announced that it would purchase a fleet of 20 planes from Boom Supersonic, a startup building aircraft that can travel faster than the speed of sound. The order came after United Airlines announced last year that it would buy 15 of the company's Overture planes. Passenger flights aren't expected until the end of the decade, but if everything goes according to plan, commercial supersonic flight could return for the first time since the age of the Concorde.
Boom says its planes are designed to go at speeds twice as fast as a typical flight. That would be fast enough to get someone from Newark to London in just three and a half hours, and from Los Angeles to Honolulu in just three hours. The first of these flights is scheduled for 2026, and the company plans to start carrying passengers by 2029. If all works out, United has the option to buy at least 35 more planes from the startup; American has the option to buy another 40.
But there's another twist. Boom also wants to make these flights environmentally friendly, promising that these planes will be "net-zero carbon from day one," and rely completely on sustainable aviation fuel, which is repurposed from waste or organic sources.