Accession Number:

AD0262495

Title:

ANALYSIS OF SHIP FORMS TO MINIMIZE WAVEMAKING RESISTANCE

Descriptive Note:

Corporate Author:

STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

59.0

Abstract:

Weinblums tables were used to compute the lines of a ship with the over-all dimensions of a highspeed destroyer and a minimum wavemaking resistance at a Froude number of 0.5. The wavemaking resistance of a model of this ship was measured at 3 different drafts over a Froude number range of 0.07 to 0.65. A second series of measurements was made after the model was modified to compensate for the effects of the boundary layer displacement thickness. The results of these tests were compared with those of equivalent Taylor Series models, a destroyer, and with thinship computations. The results indicate the possibility of obtaining about 10 reduction in over-all resistance over the Taylor Series model and about 8 over the destroyer at high Froude numbers, at the expense of poorer performance at low Froude numbers. The resistance of other forms optimized in the same way for Froude numbers in the range between 0.20 and 1.0 and with prismatic coefficients in the range between 0.56 and 0.74 also were computed. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE