What is the maximum engine ITT during starting?

• A. 980 C
• B. 870 C
• C. 1090 C
• D. 755 C

Answer: (B)

The maximum engine Interstage Turbine Temperature (ITT) during starting is set at 870 degrees Celsius. This limit is established to protect the engine from thermal damage during the critical start phase. When the engine is starting, temperatures can rise rapidly, and exceeding this threshold could lead to excessive thermal stress on engine components, potentially resulting in failure or reduced service life.

By adhering to the 870 C limit, operators can ensure that the engine functions effectively during startup while maintaining safety and reliability. This value is based on extensive testing and operational experience, which has shown that maintaining temperatures within this parameter helps avoid potential overheating issues that could arise during the starting process.