Question

In a flow compressor, the absolute velocity in the stator

• A. increases
• B. decreases
• C. initially increases and then decreases
• D. remains constant

Hint:

Stators are designed to convert kinetic energy into pressure.

Answer 1

The Correct Option is B

In a flow compressor, an essential part of aerospace engineering, understanding the behavior of absolute velocity in the stator is crucial. In a compressor, air passes through a series of rotating and stationary blades. The stationary blades are called stators. The function of the stator is to convert the kinetic energy from the rotor blades into pressure energy, which inherently involves reductions in velocity.

Explanation:

1. As air flows through the stator, its velocity relative to the blades (absolute velocity) changes due to the conversion of kinetic energy into pressure energy.

2. The stator is designed to slow down the airflow and increase its static pressure. This is part of the energy transformation within the compressor, where velocity is exchanged for pressure.

3. Consequently, the absolute velocity of the air as it exits the stator is lower than when it enters.

4. This principle of reducing velocity and increasing pressure is a fundamental aspect of compressor aerodynamics in turbine engines.

Therefore, the absolute velocity in the stator of a flow compressor decreases.