f17582d2_engine___Free_net_encyclopedia__Type
[Description] Essentially a ramjet where intake air is compressed and burnt with the exhaust from a rocket [Advantages] Mach 0 to Mach 4.5+ (can also run exoatmospheric), good efficiency at Mach 2 to 4 [Disadvantages] Similar efficiency to rockets at low speed or exoatmospheric, inlet difficulties, a relatively undeveloped and unexplored type, cooling difficulties [Type] 
Integral rocket ramjet
Jet engine - Free net encyclopedia
Type