Question 53Gas Turbine - Assistant Engineer
70% to passFor the GE LM2500 gas turbine engine shown in the illustration, the 13th stage bleed air is used for which of the following? Illustration GT-0017
ASump pressurization and cooling.
BPower turbine balance piston cavity pressurization.
CPower turbine cooling.
DHigh pressure turbine 2nd stage nozzle cooling.
AI Explanation
The correct answer is D) High pressure turbine 2nd stage nozzle cooling. The 13th stage bleed air from the GE LM2500 gas turbine engine is used for high pressure turbine 2nd stage nozzle cooling. This cooling air is extracted from the compressor section and routed to the turbine section to provide essential cooling for the high pressure turbine components, which operate at extremely high temperatures. The other answer choices, while potentially valid for other engine systems, do not accurately describe the purpose of the 13th stage bleed air in this particular engine configuration.
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