Supersonic -

: Through its Quesst mission , NASA is testing the experimental X-59 aircraft , designed to replace the boom with a quiet "thump". By using a long, 38-foot nose and unique airframe shaping, the plane aims to reduce the perceived noise level to about 75 decibels —roughly equivalent to a neighbor closing a car door.

Supersonic travel: Dead on arrival? - Aerospace America - AIAA supersonic

The greatest obstacle to overland supersonic flight has historically been the —a thunderous shockwave that can rattle windows and cause property damage. This led to a 52-year ban on civilian supersonic flight over land in the U.S.. : Through its Quesst mission , NASA is

Supersonic flight, once the exclusive playground of the Concorde and military pilots, is on the cusp of a major commercial revival. After a two-decade hiatus following the retirement of the Concorde in 2003 , new players like Boom Supersonic and NASA are working to overcome the technical and regulatory hurdles that grounded the previous generation of ultra-fast travel. Breaking the Sound Barrier... Quietly - Aerospace America - AIAA The greatest obstacle

: Boom Supersonic is developing its own airliner, Overture , which is optimized for speeds of Mach 1.7 (approx. 1,300 mph). In early 2025, Boom’s XB-1 demonstrator successfully broke the sound barrier, marking a significant milestone toward their goal of commercial service by 2029.