Design of a controllable pitch underwater thruster system
Citable URI
https://hdl.handle.net/1912/5531DOI
10.1575/1912/5531Keyword
Remote submersiblesAbstract
Control systems for underwater vehicles have reached the level of sophistication
where they are limited by the dynamic performance of the thrust actuators. Standard
fixed-pitch propellers have been shown to have very poor dynamic characteristics,
particularly at low thrust levels The dynamic response of a fixed-pitch propeller is
dependent upon highly non-linear transients encountered while the shaft speed approaches
its steady-state value. This thesis proposes the use of a controllable pitch propeller system
to address this problem. A controllable pitch propeller varies the amount of thrust
produced by varying the pitch angle of the blades at a constant shaft speed. The bandwidth
of this type of thrust actuator would be dependent primarily on the speed at which the
pitch angle of the blades are changed. A variable pitch propeller system suitable for retrofit
into an ROV is designed and built. The system is designed for maximal pitch angle
bandwidth with low actuator power consumption.
Description
Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution August 1993
Suggested Citation
Thesis: Keefe, Robert W., "Design of a controllable pitch underwater thruster system", 1993-08, DOI:10.1575/1912/5531, https://hdl.handle.net/1912/5531Related items
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