Accession Number:

AD0265465

Title:

LONGITUDINAL STABILITY AND CONTROL OF CANARD HYDROFOIL CRAFT

Descriptive Note:

Corporate Author:

HUGHES AIRCRAFT CO CULVER CITY CALIF

Personal Author(s):

• CHUCK,GILBERT
• LUKE,RICHARD K.C.

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

A study of longitudinal stability and control of canard hydrofoil-supported craft of the 110long-ton weight class, in both calm and disturbed seas, is presented. Configurations involve craft with all foils fully submerged, all foils surface-piercing, and foils of hybrid arrangement submerged forward, surface-piercing aft and vice versa. As a design aid, effects of variations of major parameters such as speed, c.g. location, foil spacing, dihedral angle, etc. are illustrated. It is shown that autopilot stabilization of the submerged-foil reference craft is required in waves. Although the surface-piercing-foil reference craft is inherently stable in both smooth water and disturbed seas, its capabilities in waves are more limited than those for the submerged-foil vehicle. Also presented is a comparison of canard and conventional configurations in calm and disturbed seas. Author

Descriptors:

• *HYDRODYNAMICS
• *HYDROFOIL CRAFT
• *STABILITY
• CANARD CONFIGURATIONS
• MATHEMATICAL ANALYSIS
• PITCH(MOTION)
• STABILIZATION
• WATER WAVES

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE