摘要
The unmanned SR-72 will use an engine that combines a turbine and a ramjet(冲压式喷气发动机)to reach its top speed of Mach 6-about 3,600mph(5,800km/h).Like its predecessor,the SR-72 will be designed for highaltitude surveillance but might also be fitted with weapons to strike targets.
出处
《科技传播》
2013年第22期15-15,共1页
Public Communication of Science & Technology