Parametric Design of Geometric Shape and Analysis of Performance of Underwater Glider

• Main Authors: Chien-Yi Li, 李建億
• Other Authors: Jen-Shiang Kouh
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/77203107098129646144

碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 96 === Autonomous underwater glider is a kind of underwater vehicles which is suitable for measuring and collecting large-scale underwater hydrographic information. The gliding principle of an underwater glider is being means of buoyancy engines to inside the glider control a ballast tank for intaking and expelling water. Thereby, difference between buoyancy and weight, and also difference in distance between center-of-buoyancy and center-of-gravity can be produced. These differences will result in an inclination and up-and-down motion of the fuselage. Furthermore, in cooperation with shifting and rotating of the internal moving weight and control of the operable rudder for producing pitch , roll and yaw motion. The purpose of this study is to develop a computer-aided design tool for an underwater glider. Rhino is a commercial CAD software which provides software development kit for building up a design tool to meet special purpose. One can use this development kit to connect with functions of Rhino, assemble different existing programs and export various information such as volume, mass, coordinates of center-of-buoyancy, and center-of-gravity, etc. Besides, the tool exports some files including engineering drawing, three dimensions solid model, Microsoft excel charts, and animation of simulating results for glider motion, etc. The designer can use this information to enhance efficiency for design work and reduce computation errors, so the time needed for design of an underwater glider can be shortened to a large extent.