TIT stands for what?

• A. Total Inlet Temperature
• B. Turbine Internal Temperature
• C. Turbine Inlet Temperature
• D. Thermal Induction Temperature

Answer: (C)

Turbine Inlet Temperature is the temperature of the gas at the entry to the turbine portion of a gas turbine engine. This is the correct term because TIT specifically refers to the heat load the turbine blades must withstand as the combusted gas enters the turbine. It’s a critical parameter that governs engine performance, efficiency, and blade life, and the engine’s fuel control and protection systems regulate TIT to stay within certified limits.

The other phrases aren’t the standard aviation terms for this measurement. Total Inlet Temperature isn’t the established acronym used in this context, Turbine Internal Temperature isn’t a recognized term for what the engine monitors at the turbine inlet, and Thermal Induction Temperature isn’t a recognized engine parameter.