How many stages are in the compressor of the Trainer Helicopter?

• A. 1 stage axial
• B. 2 stage centrifugal
• C. 3 stage axial with single stage centrifugal
• D. 4 stage turbo

Answer: (C)

The correct answer indicates that the compressor of the Trainer Helicopter features a configuration that includes three stages of axial compression combined with a single stage of centrifugal compression. This design is effective because axial stages are capable of handling larger volumes of airflow, providing efficient compression for a turbine engine. Meanwhile, the addition of a centrifugal stage at the end enhances performance by increasing the pressure of the air before it enters the combustion chamber. This hybrid approach effectively balances efficiency and power output, making it suitable for the operational requirements of a trainer helicopter.

In this context, a configuration of three-stage axial with a single stage centrifugal ensures optimal performance across various flight conditions, supporting the helicopter's agility and responsiveness.