How is the clutch shown in the attached illustration engaged? Illustration GT-0018
Official USCG Answer & Rule Citation
Correct Answer: Option B — Clutch engages automatically when input shaft flange is rotating faster than the output assembly.
The Synchro-Self-Shifting (SSS) clutch operates on the principle of a pawl and ratchet mechanism. It engages automatically when the input shaft speed exceeds the output shaft speed, allowing the gas turbine to drive the load. Once the input speed drops below the output speed, the clutch automatically disengages via overrunning.
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