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Design Issues Article Animation Buoyancy Turtle Lab Powerpoint |
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The Turtle
Design Issues
Engineering/design
problems that had to be solved with the technology of each time:- watertight, pressure-proof hull
- vertical and horizontal propulsion
- vertical stability
- variable ballast
- steering controls
- weapons-delivery system
The Turtle: (Revolutionary War) Conceived and created by David Bushnell to deliver his underwater mine, the Turtle was used in the winter of 1776 to attack the H.M.S. Eagle, a 64-gun frigate at anchor in New York harbor. While the attempt failed, the frigate was forced to re-locate thereby recognizing the power of the unknown force, whether used or not. What had been demonstrated was the ability to submerge with limited range for a period of 30 minutes. It was a crude first attempt for a submarine with limited, visual-only sensors and a mine with a timer.
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