More than two decades after the Concorde’s retirement, commercial supersonic travel is once again gaining momentum as aerospace companies and government agencies work to solve one of aviation’s biggest challenges: the sonic boom.
Advances in aircraft design, engine technology and noise reduction have fueled renewed optimism that passengers could once again fly faster than the speed of sound, this time with far less disruption to people on the ground.
Now, several developments are raising hopes that those restrictions could eventually change.
NASA’s experimental X-59 aircraft recently completed its first successful supersonic flight while producing only a much quieter “sonic thump” rather than the window-rattling boom associated with Concorde. The aircraft is part of NASA’s Quesst mission, which aims to gather data that could help regulators reconsider overland supersonic light rules. Private companies are also pursuing next-generation aircraft.
READ: NASA to build Concorde-like supersonic passenger jet with reduced noise (March 1, 2016)
Colorado-based Boom Supersonic is developing the Overture airliner, designed to cruise at Mach 1.7, nearly twice the speed of today’s commercial aircraft. The company expects the aircraft to carry between 60 and 80 passengers and dramatically reduce travel times on international routes.
Regulatory momentum also appears to be shifting.
The U.S. government has begun exploring changes to decades-old restrictions on overland supersonic flight, reflecting growing confidence that modern aircraft may no longer produce disruptive sonic booms. Any rule changes, however, would depend on extensive testing and public acceptance.
Despite the enthusiasm, significant challenges remain.
Supersonic aircraft are generally more expensive to build and operate than conventional airliners. They also consume more fuel and face demanding engineering requirements, making profitability a major concern.
Bombardier, whose Global 8000 is expected to become the fastest civilian business jet in service, has argued that very high-speed subsonic travel currently offers a more practical balance of speed, range and operating costs than full supersonic flight.
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Experts also note that any commercial comeback will depend not only on quieter technology but also on certification, airline demand, infrastructure and environmental considerations.
Even so, the industry’s progress represents the strongest push toward faster-than-sound passenger travel since Concorde ended service in 2003.
If ongoing flight tests and regulatory reviews succeed, commercial supersonic aircraft could once again become part of global aviation, offering travelers dramatically shorter journeys while avoiding the thunderous sonic booms that grounded an earlier generation of high-speed flight.