Technical Note Title: On Aerodynamics of High Speed Boat Sponsons
J L Grenestedt and K P Curran, Lehigh University, USA
Two different concepts for sponsons for high-speed manned or unmanned boats were conceived. Models were manufactured and wind tunnel tested. The objective of the first sponson concept was to have low aerodynamic drag, low aerodynamic lift, and low aerodynamic lift force gradient (lift as a function of angle of attack). This sponson would rely on hydrodynamic lift to support the entire boat. The objective of the second sponson concept was to provide very high aerodynamic lift, preferably so high that no hydrodynamic lift would be required for supporting the boat at speed. There would thus be little or no hydrodynamic drag. Another requirement for both sponson concepts was to aid in vehicle stability, which however is very different for the two sponsons.
Transactions RINA, Vol 157, Part B1, International Journal of Small Craft Technology, Jan-Jun 2015
DOI No: 10.3940/rina.ijsct.2015.b1.166tn
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