The Air Force has finished a round of record-breaking hypersonic weapons experiments with an air-breathing engine and is planning an initial flight demonstration of the boost-glide Air-Launched Rapid Response Weapon later this month. Aerojet Rocketdyne’s 18-foot-long scramjet engine -- a modernized version of the system that powered the X-51 Waverider, a former hypersonic test vehicle which first flew in 2010 -- produced more than 13,000 pounds of thrust during the November tests at Arnold Air Force Base, TN, the service...
