Resistance and Stock Propulsion on the High Speed Sealift (HSS) Hybrid Contra-Rotating Shaft-Pod (HCRSP) Concept, Model 5653-3A
Abstract
A series of model-scale resistance and propulsion experiments were conducted on a Hybrid Contra-Rotating Shaft-Pod (HCRSP) candidate propulsion configuration on a High Speed Sealift (HSS) hullform, as represented by Model 5653-3A. The HCRSP concept consists of two pairs of contra-rotating propellers, where the forward propellers are arranged on conventional shaftlines, and the aft propellers are powered by propulsion pods. At the selected forward-to-aft propeller RPM ratio of 1:1, design displacement, it is predicted that the HSS HCRSP will require a total delivered power, shafts and pods, of 196,111 hP (146.2 MW), at a propeller rotational speed of 110.4 RPM (forward and aft propellers) to attain the 39-knot design objective speed. For the 39-knot objective speed, design displacement, the HSS HCRSP exhibited 9.8% reduction in total delivered power relative to the Joint High Speed Sealift (JHSS) baseline shaft & strut (BSS), a conventional 4-screw open propeller design that shares the same parent sealift hullform. Average reduction in delivered power over the speed range, for the HSS HCRSP relative to JHSS BSS, was 14%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2008
- Accession Number
- ADA487978
Entities
People
- Dominic S. Cusanelli
- Jonathan Slutsky
Organizations
- Naval Surface Warfare Center Carderock Division