Which RIMMS engine component houses the compressor component?

Which RIMMS engine component houses the compressor component?

• A. Inlet plenum
• B. Diffuser
• C. Compressor outlet
• D. Casing

Answer: (B)

In this arrangement, the diffuser is the component that surrounds and containing the compressor, essentially acting as the housing for the compressor assembly. The diffuser surrounds the compressor impeller, providing a smooth flow path and a transition from high-velocity air to higher pressure before the air moves on to the next stage. This housing function is why it’s the correct choice—the diffuser not only helps convert kinetic energy to pressure but also physically encloses the compressor components and provides mounting points and alignment within the flow path. The inlet plenum is just the upstream space that collects air before the diffuser, not the compressor housing. The compressor outlet is the path the air takes after compression, not the component that contains the compressor itself. The casing is the overall outer shell of the engine, which houses many parts, but the specific housing for the compressor within this layout is the diffuser.

In this arrangement, the diffuser is the component that surrounds and containing the compressor, essentially acting as the housing for the compressor assembly. The diffuser surrounds the compressor impeller, providing a smooth flow path and a transition from high-velocity air to higher pressure before the air moves on to the next stage. This housing function is why it’s the correct choice—the diffuser not only helps convert kinetic energy to pressure but also physically encloses the compressor components and provides mounting points and alignment within the flow path.

The inlet plenum is just the upstream space that collects air before the diffuser, not the compressor housing. The compressor outlet is the path the air takes after compression, not the component that contains the compressor itself. The casing is the overall outer shell of the engine, which houses many parts, but the specific housing for the compressor within this layout is the diffuser.