![]() Its cool-sounding name derives from the name of Ernst Mach, the first physicist to use this unit. When Mach is “1”, it is the same as the speed of sound. Mach expresses the speed of a rocket and the like. For objects traveling in dry air of a temperature of 20 ☌ (68 ☏) at sea level, this speed is approximately 343.2 m/s (1,126 ft/s 768 mph 667.1 kn 1,236 km/h). Supersonic speed is the speed of an object that exceeds the speed of sound (Mach 1). What is supersonic speed and how is it measured? 10 Why is it important to learn about supersonic flight?.9 Which is faster the speed of sound or the Mach number?.8 Which is the best definition of supersonic speed?.1 What is supersonic speed and how is it measured?.“For us, it’s not just about making a fast plane we aim to firmly anchor the US as a leader in high-speed flight. “While a potential Mach 5 Air Force One is very interesting (and awesome) to us, we are laser-focused on supporting the Presidential and Executive Airlift Directorate by integrating and demonstrating their needs with our first aircraft over the next few years,” says Schuford. Hermeus’s Shuford, meanwhile, emphasizes to CNN that transporting presidents at hypersonic speeds isn’t his company’s all-consuming goal. Music mogul and entrepreneur Kanye West famously pitched the Apple-backed iPlane-1 to Donald Trump in 2018, as a hydrogen-powered alternative to the current Air Force One.Īs a 2020 US presidential candidate, he might well be watching developments with interest, although as CNN reported this week, he has only made the ballot in 10 states, making it mathematically impossible for him to become the next president. Japanese company successfully tests a manned flying car for the first time ![]() All four founders worked together at Generation Orbit, where they worked on the development of a hypersonic rocket-plane and the US Air Force’s newest X-Plane. The Hermeus founders include former employees from SpaceX, Elon Musk’s rocket start-up, and Blue Origin, Jeff Bezos’ secretive space venture. “We built a Mach 5 engine prototype in only nine months and for less than two million dollars.” “At Hermeus, we are looking to build high-speed aircraft faster and cheaper than has ever been done,” Skyler Shuford, Hermeus co-founder and chief operating officer, tells CNN Travel. Hermeus successfully tested a Mach 5 engine prototype in February last year. Hypersonic travel is generally regarded as reaching speeds of Mach 5 or above, or five times the speed of sound. Courtesy HermeusĬNN Travel reported on Hermeus in 2019, when the aerospace company was attracting attention for its plans to develop a craft twice as fast as Concorde, the supersonic plane that made its final transatlantic flight in October 2003 and traveled between New York and London in under four hours. Hermeus successfully tested a Mach 5 engine prototype in February 2020. So what kind of speeds are we talking? Well, Mach 1.8 is around 1,381 miles per hour (2,222 kilometers) and so Exosonic’s craft promises to halve cruise times compared to existing aircraft.Įxosonic will also be working with the US Air Force to modify the aircraft cabin so it has the necessary communications equipment security measures, and the kind of classy fittings that will allow US leaders and their guests to work and rest on board.Ī US Air Force One supersonic prototype could be rolled out by 2025, reports .Įxosonic co-found and CEO Norris Tie confirmed to CNN that the company expects its supersonic plane to be flying by the mid-2030s. “Low boom allows travelers to fly at supersonic speeds without generating disruptive booms for those on the ground.” “The future for global rapid passenger travel is low-boom supersonic flight,” said Exosonic’s CEO, Norris Tie, in a statement. The Exosonic’s 70-seater boasts a 5,000-nautical-mile range and, thanks to boom-softening techniques, it should be able to fly overland at almost twice the speed of sound without upsetting residents down below. Now the United States administration behind Space Force is taking an equally ambitious approach to its top-league transport. Courtesy ExosonicĬNN reported last year that, after more than five decades and 11 administrations, President Donald Trump was planning to give the livery of the presidential Air Force One plane a patriotic-themed makeover. For proprietary concerns, the image doesn't represent Exosonic's current configuration. Artist concept of Exosonic's low boom supersonic airliner converted into an executive transport aircraft.
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