CFM56-7是一款高涵道、双转子、轴流式涡扇发动机。起动活门是蝶形关断活门。

A The CFM56-7 is a high roadway, dual rotor, axial flow turbofan engine. The start valve is a butterfly shutoff valve;

B The CFM56-7 is a high aisle, dual rotor, axial flow turbofan engine. The start valve is a butterfly shut down valve;

C The CFM56-7 is a high bypass, dual rotor, axial flow turbofan engine. The start valve is a butterfly shutoff valve;