Accession Number:

AD0010090

Title:

THE HYDRODYNAMICS OF UNDERWATER JET PROPULSION

Descriptive Note:

Corporate Author:

CALIFORNIA INST OF TECH PASADENA HYDRODYNAMICS LAB

Personal Author(s):

• O'Neill, J. P.

Report Date:

1953-03-01

Pagination or Media Count:

8.0

Abstract:

Force measurements were obtained with a new sensitive balance for a range of nose shapes and cavitation parameters K under conditions of open- cavity flow. Drag-coefficient CD data were obtained for a 12- to 25-ftsec range on model sizes ranging from 0.500 to 1.414 in. in diameter for the sharper cone. The experiments indicate a remarkable consistency and a close check with the theory. Two exceptions were noted flow discrepancies, about sharphy pointed cones, with those indicated by the approximate cavity-drag theory of Plesset and Shaffer and definite slope differences which increase with decreasing cone angle of the experimental curve with the line given by CDCDO1 K.

Descriptors:

• *WATERJET PROPULSION
• MEASUREMENT
• PARAMETERS
• GRAPHS
• SHAPE
• SENSITIVITY
• NOSES
• CONICAL BODIES
• FORCE(MECHANICS)
• CAVITATION
• UNDERWATER PROPULSION
• ANGLES
• BALANCE

Subject Categories:

• Submarine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE