Accession Number : AD0427286


Title :   THE DESIGN OF HYDROFOIL BOATS WITH PARTICULAR REFERENCE TO FULLY SUBMERGED HYDROFOILS,


Corporate Author : BAKER MFG CO EVANSVILLE WIS


Personal Author(s) : Baker,J G


Report Date : 14 Oct 1959


Pagination or Media Count : 1


Abstract : Two 24-foot hydrofoil model test boats were designed and constructed on the basis of long term studies. The first boat known as High Pockets has a surface piercing hydrofoil system suitable for Froude Numbers below about 0.5. Additional conclusions based on High Pockets' tests are contained in this report. The second boat, known as High Tail, has an angle controlled fully submerged hydrofoil system suitable for Froude Numbers above about 0.5 is reported on herein. The functional form of the hydrofoil angle control was synthesized mathematically largely on the basis of zero Flying Draft Variance in long waves. This functional form is expressed by Specific Coupling Equations. Control parameters for the Specific Coupling Equations were selected to minimize the Hydrofoil Draft Increment for a given limiting vertical acceleration on the basis of a mathematical analysis of High Tail's vertical motions controlled in accordance with the Specific Coupling Equations while flying in idealized waves. (Author)


Descriptors :   *HYDROFOIL CRAFT , DRAG , CONFIGURATIONS , DRAFT INDICATORS(NAUTICAL) , MARINE ENGINES , CONTROL , UNDERWATER , ROLL , STABILIZATION , HYDRAULIC EQUIPMENT


Distribution Statement : APPROVED FOR PUBLIC RELEASE