Porous Hull Research - Phase 1
2009
Coats, Timothy | Gowing, Scott | Shen, Young
High speed planing craft suffer repetitive and intense shock loads from wave impacts that injure or fatigue personnel and damage equipment. A porous hull concept is tested for reducing the impact loads and spreading their energy over a longer time. The concept is essentially an outer hull with holes and an inner hull for watertight integrity, and bladders and foams are used between the hulls to expel water between impacts. A drop-box apparatus is used to test this concept with two bottom dead rise angles and a variety of hole shapes and porosities. Significant impact reduction is measured, and these reductions are shown to be in frequency ranges that affect human comfort and performance.
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