This report details the construction of a buoyancy engine. (See Janes, Nick. Design of a Buoyancy Engine for an Underwater Glider VM1 L121 LM-2004-13 for a previous study.) There is an introduction to the significance of a buoyancy engine to underwater glider technology as well as a description of some existing gliders. The following section describes the design challenge: to build a vertically translating programmable buoyancy engine capable of diving to maximum depth of 20 m. After identifying drawbacks of the original design, design changes were made and construction was undertaken. There was a setback in the choice of an ABS pipe as a structural member; however, a solution was identified and built. Conclusions and future work end this memorandum, identifying lessons learned and a path for further development.
National Research Council of Canada. Institute for Ocean Technology