Accession Number : AD0668700

Title :   HYDROFOIL CRAFT DYNAMICS IN A REALISTIC SEA INCLUDING AUTOMATIC CONTROL.

Descriptive Note : Technical rept.,

Corporate Author : HYDRONAUTICS INC LAUREL MD

Personal Author(s) : Martin,M.

Report Date : NOV 1967

Pagination or Media Count : 105

Abstract : The six degrees of freedom equations of motion of a hydrofoil boat in short crested seas are presented. An attempt was made to make these equations as realistic as feasible by taking into account the more important non-linearities, such as the variations in the wetted area and hydrodynamic coefficients of the struts and surface piercing hydrofoils with submergence changes, changes in hydrodynamic forces and moments resulting from cavitation and ventilation, etc. Equations representing the seaway and the control system are also presented and discussed. Feedback control considerations leading to desirable stability and motions in waves are discussed. (Author)

Descriptors :   (*HYDROFOIL CRAFT, HYDRODYNAMICS), EQUATIONS OF MOTION, FORCE(MECHANICS), ANGLE OF ATTACK, SUPPORTS, LIFT, DRAG, MOMENTS, OCEAN WAVES, STABILIZATION SYSTEMS, HYDROFOILS, MANEUVERABILITY, EQUATIONS OF MOTION, AUTOMATIC, CONTROL SYSTEMS

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE