Supersonic air travel could be making a return if a plane that aims to replace Concorde takes to the skies.
Richard Branson-backed Boom Supersonic expects a prototype of its passenger plane to make its first test flight by the end of this year.
The firm this week came a step closer to that goal after announcing a ‘milestone’ engine delivery for the two-seater, known as XB-1, or ‘Baby Boom’
CEO Blake Scholl tweeted: ‘Milestone coming up: XB-1 engines are on a truck and will arrive at @boomaero hangar within a week.’
‘Baby Boom’ is a 1,687mph (2,716kph) demonstrator jet designed to test the firm’s supersonic technology that could take passengers from London to New York in just 3.5 hours – around half the time it currently takes.
If its full-size 55-seat plane is approved, the first passengers could be travelling at supersonic speeds around the world by 2023.
Mr Scholl’s announcement means the Boom passenger plane’s test model is set to be assembled – 15 years after the last Concorde flight.
According to the company’s website, the XB-1 will ‘refine our design and engineering, test key supersonic technologies, and ensure efficiency, safety, and reliability’.
Reports suggest that five unnamed airlines are interested in purchasing 76 of Boom’s 55-seater jetliners.
The aircraft will have one business-class seat on either side of the aisle so each passenger gets both window and aisle access. Tickets could cost as much as £1,700 ($2,500) according to some estimates.
Boom has confirmed that Virgin Galactic and Japan Airlines will operate the aircraft, with Japan Airlines investing £7 million ($10 million) in Boom Supersonic in December 2017.
As part of the deal Japan’s number two carrier has the option to purchase up to 20 Boom aircraft and will provide its knowledge and experience as an airline to hone the aircraft design and help refine the passenger experience.
The aircraft is expected to produce a sonic boom that would be at least 30 times quieter than Concorde’s, which was dogged by high operating costs and fuel consumption and low capacity utilisation.
The Denver-based startup estimates that fares for its aircraft would be 75 per cent lower than Concorde’s and comparable to current business class tickets, due to its better fuel efficiency.
In a written statement, Blake Scholl, founder and CEO of Boom Supersonic, said in December: ‘We’ve been working with Japan Airlines (JAL) behind the scenes for over a year now.
‘JAL’s passionate, visionary team offers decades of practical knowledge and wisdom on everything from the passenger experience to technical operations.
‘We’re thrilled to be working with JAL to develop a reliable, easily-maintained aircraft that will provide revolutionary speed to passengers.
‘Our goal is to develop an airliner that will be a great addition to any international airline’s fleet.’
Yoshiharu Ueki, president of Japan Airlines, added: ‘Through this partnership, we hope to contribute to the future of supersonic travel with the intent of providing more ‘time’ to our valued passengers while emphasising flight safety.’