Active control of underwater propulsor using shape memory alloys

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dc.contributorRediniotis, Othon K.
dc.creatorWasylyszyn, Jonathan Allen
dc.date.accessioned2007-04-25T20:13:06Z
dc.date.accessioned2017-04-07T19:53:02Z
dc.date.available2007-04-25T20:13:06Z
dc.date.available2017-04-07T19:53:02Z
dc.date.created2005-12
dc.date.issued2007-04-25
dc.description.abstractThe development of a leading edge propeller blade reconfiguration system using Shape Memory Allow (SMA) muscles is presented. This work describes the design and testing of a leading edge flap, which is used to alter the local camber of a propeller blade. The leading edge flap is deflected by SMA wires housed in the blade and maintained in a fixed position with a shaft locking and releasing mechanism. A locking and releasing mechanism is utilized so that constant actuation of the SMAs is not required to maintain leading edge deflection. The profile at 70% span of the propeller blade was used to create a two-dimensional blade for leading edge flap design implementation and load testing. Deflection of up to five degrees was obtained with the final design of the leading edge flap and locking and releasing mechanism. The SMA muscles used to deflect the leading edge were actuated electronically through resistive heating and were controlled by a proportional/integral gain control algorithm with closed-loop feedback from a linear displacement sensor within the blade. With the final design of the leading edge flap and locking and releasing mechanism, a preliminary design for a three-dimensional propeller was created.
dc.identifier.urihttp://hdl.handle.net/1969.1/4926
dc.language.isoen_US
dc.publisherTexas A&M University
dc.subjectShape Memory Alloys
dc.subjectPropulsor
dc.subjectActive Cambering
dc.titleActive control of underwater propulsor using shape memory alloys
dc.typeBook
dc.typeThesis

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Texas A&M University at College Station