What is the function of baffles in directing airflow within a turbine engine?

What is the function of baffles in directing airflow within a turbine engine?

• A. To direct fuel into the combustion chamber.
• B. To direct air-cooling air to protect engine and airframe components.
• C. To measure airspeed.
• D. To control exhaust ejection direction.

Answer: (B)

Baffles in a turbine engine are placed to steer cooling air where it’s needed. They guide cooling air around hot sections and components so that bearings, seals, the turbine case, and other structures stay within safe temperatures. This keeps the engine and airframe protected from heat damage and helps maintain reliability. Other functions listed don’t fit: directing fuel into the combustion chamber is done by fuel injectors, not baffles; measuring airspeed is done with sensors like pitot tubes; and controlling the direction of exhaust is handled by the exhaust system and nozzle design, not baffles.

Baffles in a turbine engine are placed to steer cooling air where it’s needed. They guide cooling air around hot sections and components so that bearings, seals, the turbine case, and other structures stay within safe temperatures. This keeps the engine and airframe protected from heat damage and helps maintain reliability.

Other functions listed don’t fit: directing fuel into the combustion chamber is done by fuel injectors, not baffles; measuring airspeed is done with sensors like pitot tubes; and controlling the direction of exhaust is handled by the exhaust system and nozzle design, not baffles.