Question 21Gas Turbine - 1st Asst/Chief70% to pass
A compressor blade platform that is tilted or raised may indicate which of the following failures?
AI Explanation
The correct answer is A) Blade root.
A tilted or raised compressor blade platform can indicate a failure at the blade root. The blade root is the attachment point where the blade connects to the rotor disk. If the blade root experiences a failure, such as cracking or fatigue, it can cause the blade platform to become tilted or raised, which is a tell-tale sign of this type of failure.
The other options are incorrect because they do not directly relate to a tilted or raised blade platform. The carboloy pad, midspan damper, and tip clang are all different components of the compressor that could potentially fail, but they would not necessarily result in the observed condition of a tilted or raised blade platform.
Related Questions
#19 You are conducting a borescope inspection of the compressor section of a GE LM2500 gas turbine. In stage four, you see a slight tilt to one blade and the blade platform is raised higher than the other blades. What could be a cause of this condition and what would be your course of action? #20 When tip clang takes place on a gas turbine engine, the major damage occurs to what area of the blade? #22 What type of metallurgical failure does Item A represent in the illustration? Illustration GT-0014 #23 Distortion of the combustor liner assembly is evident when you observe which of the following conditions? #24 You are conducting a borescope inspection of the combustor section of a GE LM2500 gas turbine engine. You observe a one square inch hole in the combustor dome where burn through has removed the metal. What would be your course of action?