Accession Number:

AD0700932

Title:

DYNAMICAL STABILITY OF A TOWED THIN FLEXIBLE CYLINDER,

Descriptive Note:

Corporate Author:

CATHOLIC UNIV OF AMERICA WASHINGTON D C INST OF OCEAN SCIENCE AND ENGINEERING

Personal Author(s):

• Pao,Hsien-Ping

Report Date:

1969-12-01

Pagination or Media Count:

37.0

Abstract:

The stability and dynamics of a slender cylinder towed in a viscous stream are examined. The cylinder is clamped at one end and free at the other. Stability conditions and modal shapes are found based on solutions to linearized equations resulting from small deflection assumptions. Particular attention is focused on the conditions of stability when the lengthdiameter ratio becomes large. It is found that the stability of a slender cylinder is virtually controlled by the tail portion of the cylinder which is about 25 diameters from the free end. Some experimental observations conducted in a towing tank are in general agreement with theory. Author

Descriptors:

• (*CYLINDRICAL BODIES
• *HYDRODYNAMICS)
• (*TOWED BODIES
• HYDRODYNAMICS)
• FLEXIBLE STRUCTURES
• SUBMARINE ANTENNAS
• HYDROPHONES
• STABILITY
• EQUATIONS OF MOTION
• SLENDER BODIES

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE