Why Airliners Still Can’t Go Supersonic Over Land

Why Airliners Still Can’t Go Supersonic Over Land

Share this story An airliner crossing Kansas at Mach 0.85 is doing nothing remarkable. The same aeroplane at Mach 1.01 would be breaking federal law. The line is not about safety, or engineering, or fuel. It is about a noise, and about an American town in 1964 that...