SUBROUTINES FOR DETERMINING THE GEOMETRY AND RESISTANCE OF SMALL WARSHIP APPENDAGES

Authors
  1. Ellis, W.E.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
An analytical method has been developed for the preliminary estimation of the resistance of a set of small warship appendages. The general design features of typical appendages are described and a standardization set of appendages is defined for use in a concept exploration model. Computer subroutines which generate the dimensional data and resistance predictions for destroyer-sized ships are described. Wind resistance of the superstructure and the above water portion of the hull, due to the ship's forward speed, is included in the calculation. Propeller diameter is a key variable in determining propeller performance, and is a primary dimension for sizing propeller shaft supports. The major factors which influence propeller diameter are discussed and a simple relationship between propeller diameter and hull draft is recommended.
Report Number
DREA-TM-85-220 — Technical Memorandum
Date of publication
15 Nov 1985
Number of Pages
45
DSTKIM No
86-00258
CANDIS No
105886
Format(s):
Hardcopy;Originator's fiche received by DSIS

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