What are the two types of engine inlets?

What are the two types of engine inlets?

• A. Single And Divided
• B. Circular And Rectangular
• C. Smooth And Serrated
• D. Open And Closed

Answer: (A)

The main idea is how air enters the engine—whether it comes through one continuous path or is split into multiple paths. A single inlet means one continuous opening feeds air into the engine. A divided inlet splits the incoming air into two or more separate passages before it reaches the compressor. This division helps with routing around nacelle structures, maintaining more uniform airflow to the engine, and sometimes feeding different compressor stages in certain designs. This isn't about the shape of the opening (circular vs rectangular), edge texture (smooth vs serrated), or whether an inlet is simply open or closed; those factors describe other characteristics, not the basic routing of air into the engine.

The main idea is how air enters the engine—whether it comes through one continuous path or is split into multiple paths. A single inlet means one continuous opening feeds air into the engine. A divided inlet splits the incoming air into two or more separate passages before it reaches the compressor. This division helps with routing around nacelle structures, maintaining more uniform airflow to the engine, and sometimes feeding different compressor stages in certain designs. This isn't about the shape of the opening (circular vs rectangular), edge texture (smooth vs serrated), or whether an inlet is simply open or closed; those factors describe other characteristics, not the basic routing of air into the engine.