X-one was intended to examine that Area — and in the end fly outside of it, becoming a supersonic craft.
once they listened to a increase on the ground, Yeager signaled to Ridley, “This machmeter is all screwy!” https://shaniamvmw808686.newbigblog.com/35854206/the-best-side-of-chuck-yeager-s-supersonic-plane-re-enactment-video