BOOM SUPERSONIC'S XB-1 PROTOTYPE ACES 2ND TEST FLIGHT

Summary from the TLDR newsletter

Boom Supersonic's XB-1 supersonic demonstrator aircraft flew for the second time ever on Monday. It reached an altitude of 10,400 feet and a speed of 277 mph during the 15 minute flight. The flight demonstrated landing gear being retracted and extended for the first time and tested a new digital stability augmentation system to improve handling. The company expects to achieve supersonic flight later this year.