Fig. 1. Propeller Pitch
Fig. 2. Formula between propeller pitch and angle
Fig. 3. Controllable pitch propeller
Fig. 4. Blade cross section according to propeller pitch angle
Fig. 5. Control system diagram for propulsion
Fig. 6. System circuit diagram between IMCS and CPP LOP
Fig. 7. Control description between IMCS and CPP LOP
Fig. 8. Op-Amp circuit diagram inside MDSD
Fig. 9. Analysis of Op-Amp circuit diagram inside MDSD
Fig. 10. Ground loop caused by leakage current of electrical equipment
Fig. 11. Assuming input voltage cable is grounded
Fig. 12. Circuit analysis if the input voltage cable is grounded
Fig. 13. Assuming current flows from outside to the ground line
Fig. 14. Circuit analysis if current flows from outside to the ground line
Fig. 15. Installation of the terminating resistor at the end of the control wire
Fig. 16. Concept of application of signal converter to CPP control circuit
Fig. 17. Installation of the signal converter
Fig. 18. Signal converter installed in the CPP LOP for LST-II
Fig. 19. Propulsion sea trial test in LST-II
Fig. 20. CPP control signal ID trend
Table 1. Classification of results about the causes of CPP control circuit malfunction
Table 2. Cause and solution about problem
Table 3. Signal converter specification
Table 4. Signal ID list for CPP control signal trend identification
Table 5. Speed table according to lever
Table 6. Command and feedback pitch according to the speed lever
References
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