Trim, ballast and battery systems in a buoyancy engine for an underwater glider

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TypeTechnical Report
Series titleStudent Report
Subjectbuoyancy engine; BE; Underwater glider; Autonomous underwater vehicle; AUV
AbstractThis report details the study into trimming and ballasting the buoyancy engine designed by NRC-IOT. The introduction discusses the basics of a glider, as well as current gliders already in operation around the world. Design considerations are then listed and their effects on the glider noted. The design of a nosepiece and tether cable prior to testing is described. The locations of the center of mass and center of buoyancy are calculated, are related to one another, and are discussed. Section 4 includes the implementation of a system of lead weights to test the buoyancy engine?s ability to position itself horizontally and to rise and fall at acceptable glide angles. Section 5 details the concept selection of battery type, size, shape, weight, and other factors. MATLAB code for communicating with the serial data communications port is discussed and results of tests are given. Future work is then discussed along with a conclusion.
Publication date
PublisherNational Research Council Canada. Institute for Ocean Technology
PlaceSt. John's, NL
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number6272
NPARC number8895145
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Record identifiera9260b87-0f6c-470d-bea2-446be292ecae
Record created2009-04-22
Record modified2016-10-03
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