Which of the following might be used to identify turbine discharge pressure?

Prepare for the EASA Gas Turbine Engine Test. Enhance your learning with multiple choice questions, hints, and in-depth explanations. Ace your exam!

Multiple Choice

Which of the following might be used to identify turbine discharge pressure?

Explanation:
In this topic, pressures at different engine stations are labeled with Pt for total (stagnation) pressure and Tt for total temperature. The turbine discharge is the gas exit from the turbine, which is located at station 7, so the pressure there is the turbine discharge pressure and is denoted Pt7. That’s why Pt7 is the best identifier for turbine discharge pressure. Pt2 is the compressor discharge pressure, and Pt5 is the turbine inlet pressure, so they don’t describe the turbine exit. Tt7 would be the total temperature at the turbine discharge, not the pressure.

In this topic, pressures at different engine stations are labeled with Pt for total (stagnation) pressure and Tt for total temperature. The turbine discharge is the gas exit from the turbine, which is located at station 7, so the pressure there is the turbine discharge pressure and is denoted Pt7. That’s why Pt7 is the best identifier for turbine discharge pressure.

Pt2 is the compressor discharge pressure, and Pt5 is the turbine inlet pressure, so they don’t describe the turbine exit. Tt7 would be the total temperature at the turbine discharge, not the pressure.

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