For the GE LM2500 gas turbine shown in the illustration, the 9th stage bleed air is used for which of the following? Illustration GT-0017

Correct Answer: Option C — Power turbine cooling.

In the GE LM2500 architecture, 9th stage compressor bleed air is extracted to provide cooling for the power turbine components. This air is routed through internal passages to manage thermal loads on the turbine blades and disks, ensuring structural integrity during high-temperature operation as specified in the engine technical manual.