Fourth launch o' me Wildman Darkstar Extreme on an Aerotech M1550 Redline. Sweet flight t' 12,524 ft.Stratologger reported peak velocity o' 1707 ft/sec which is 1163 Mph or 1873 Kph - Mach 1.51 definitely supersonic! Nice recovery landed about 2 km away. Begad! Rocket stands 2.61 meters tall and is 10 cm in diameter, matey, GLOW is 13.7kg.