Question 154Gas Turbine - Assistant Engineer
70% to passRoutine water washing of the gas turbine engine compressor shown in the illustration, is usually performed while operating under which of the following conditions? Illustration GT-0017
AAt 25% power.
BAt 75% power.
CAt full power.
DWith the starter motor drive.
AI Explanation
The correct answer is D) With the starter motor drive. The routine water washing of the gas turbine engine compressor is typically performed with the starter motor drive, not at specific power settings. This is done to ensure the compressor blades are thoroughly cleaned while the engine is not under load, which helps maintain the engine's efficiency and performance. The other options, A) 25% power, B) 75% power, and C) full power, are incorrect because the compressor water washing is not usually conducted at those specific power settings. The key is to perform the water washing with the starter motor drive to properly clean the compressor blades without putting the engine under load.
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