Accession Number:

AD0781850

Title:

Propeller Slipstream Performance for Four High-Speed Rudders Under Cavitating Conditions,

Descriptive Note:

Corporate Author:

NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

• Mathis,P. B.
• Gregory,D. L.

Report Date:

1974-05-01

Pagination or Media Count:

108.0

Abstract:

A series of rudders with a geometric aspect ratio of 1.5 but widely varying section shapes was constructed to determine the effect of section shape on the cavitating performance of high-speed rudders. Experiments on four of these rudders operating behind a propeller were conducted in the 24-inch, variable-pressure water tunnel over a cavitation number range from 4.0 to 0.5 and an angle of attack range from -35 to 35 degrees. The propeller ahead of the rudder was operated at propeller loadings of 0.07, 0.15, and 0.20. Modified author abstract

Descriptors:

• *MARINE RUDDERS
• *HYDRODYNAMIC CONFIGURATIONS
• *CAVITATION
• WATER TUNNELS
• MODEL TESTS
• MARINE PROPELLERS
• ANGLE OF ATTACK
• LIFT
• HIGH VELOCITY
• PERFORMANCE(ENGINEERING)

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE