These vehicles are driven by scramjet mode of operation at about 20–30 km altitude [1] where the ambient pressures and temperatures are low. To initiate combustion process under such conditions, it is necessary
aCRJ-200飞机是加拿大庞巴迪公司生产的,主要用于支线飞行。它安全、舒适和环保,他有两台涡喷发动机,可以搭载50名乘客。最大巡航速度为0.81马赫,最大使用高度为41000英尺。 The CRJ-200 airplane is Canada Bombardier Company produces, mainly uses in the branch flight.It safe, comfortable and environmental prote...