Accession Number : AD0760698

Title :   Optimization of Forward Foil Lift Control for AG(EH) Hydrofoil Craft. Volume II: Control.

Descriptive Note : Interim rept. Mar 71-Oct 72,

Corporate Author : GRUMMAN AEROSPACE CORP BETHPAGE N Y

Personal Author(s) : Rose,Roderick M.

Report Date : DEC 1972

Pagination or Media Count : 91

Abstract : The report summarizes the development, to date, of a linear optimal plant plus controller model for hydrofoil craft. Optimization relative to quadratic performance indices is performed on a control system using restricted state feedback. Application is made to an AG(EH) longitudinal control system with fixed pitch and height gains. The model is driven by a discretized two dimensional Pierson-Moskowitz sea (steady wind of 26 kts) comprised of 13 spectral components. Vehicle responses and control system gains are trended relative to craft speed and heading for fixed sea state. Implications regarding control system structure are reviewed. (Author)

Descriptors :   (*HYDROFOILS, CONTROL SYSTEMS), (*HYDROFOIL CRAFT, CONTROL SYSTEMS), OPTIMIZATION, SHIP HULLS, PITCH(MOTION), ACTUATORS, MATHEMATICAL MODELS

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE