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8 Cards in this Set
- Front
- Back
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What is the purpose of the GT turning gear? |
To allow the shaft to cool in motion to prevent a bow. |
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What is the purpose of the starting motor? |
To bring the GT up to purge and firing speed, also used for water wash and force cooling. |
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What conditions must be met to remove the GT from turning gear? |
< 120° gas path temperature, offline for more than 24 hours, or by TA approval. |
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How many compressor stages are there? |
17 |
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How many bleed valves are there and what stages are they on? |
4 / 3(x2), 6, and 9 stages |
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What speed do we typically run the GT starting motor at purge on startup? |
800 - 825 rpm |
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What is the desired spin cool speed? |
500 rpm |
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What methods does 100 / 200 have to trip on an over speed? |
Electronic over speed trip (3920 rpm) Mechanical Over speed bolt |
