Gas Turbines USCG Question #204 (Set 2)

In which of the following ways can compressor surge cause excessive temperatures in the turbine section?

Official USCG Answer & Rule Citation

Correct Answer: Option A — By providing inadequate secondary air

Compressor surge disrupts the steady flow of air through the engine. This reduces the volume of secondary cooling air directed to the turbine section. Without adequate cooling air to maintain thermal boundaries, the turbine components are exposed to excessive combustion temperatures, leading to rapid material degradation and potential failure.

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