These insights offer a new roadmap for designing embedded engines that sound quieter, not just measure quieter—a vital step for improving public acceptance of future urban air mobility aircraft.

In order to determine whether exposure to aircraft interior noise is a health hazard, sound samples were taken in two types of aircraft: a Cessna 172 and a Piper PA-44 Seminole.

High above a barren California desert on Tuesday, a privately developed aircraft broke the sound barrier for the first time when Boom Supersonic's XB-1 demonstrator reached Mach 1.122.

When the experimental XB-1 aircraft broke the sound barrier three times during its first supersonic flight on 28 January, it did not produce a sonic boom audible from the ground, according to US ...