Accession Number:

ADA027460

Title:

The Vertical Motion of an Air Cushion Vehicle and the Spatial Distribution of Cushion Pressure,

Descriptive Note:

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT

Personal Author(s):

• Moran ,David D.
• Schechter,Richard S.

Report Date:

1976-04-01

Pagination or Media Count:

109.0

Abstract:

The spatial and temporal distribution of pressure in the cushion of an air-cushion-supported vehicle operating over a rigid periodic wave field is reported. By comparing measured and computed angular pitch accelerations, it is shown that the spatial pressure distribution is the major mechanism for pitch excitation of the vehicle. The heave motion is found to be more dependent upon other mechanisms for the vertical excitation forces. Various forms of the spatial pressure distribution are examined using experimental data.

Descriptors:

• *AMPHIBIOUS OPERATIONS
• *PRESSURE DISTRIBUTION
• *AIR CUSHION VEHICLES
• PITCH(MOTION)
• WATER WAVES
• NUMERICAL ANALYSIS
• MOTION
• MODEL TESTS
• INSTRUMENTATION
• NAVAL RESEARCH
• TEST FACILITIES
• LANDING CRAFT
• HEAVING

Subject Categories:

• Surface Effect Vehicles and Amphibious Vehicles
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE