Model tests on contra-rotating propellers¹

Article type: Research Article

Authors: van Manen, J.D. | Oosterveld, M.W.C.

Affiliations: Netherlands Ship Model Basin, Wageningen

Note: [1] Paper presented at the Seventh ONR Symposium on Naval Hydrodynamics, August 1968, Rome.

Abstract: This paper presents the results of open-water tests with a systematic series of contra-rotating propellers, consisting of a four bladed forward screw and a five bladed aft screw. Based on the open-water test results, contra-rotating propeller systems were designed for a tanker and a cargo liner. Comparative tests have been carried out with the tanker and the cargo liner both equipped with contra-rotating propellers and with a conventional screw. The propulsive efficiencies, the cavitation characteristics, the propeller induced vibratory forces and the stopping abilities are dealt with.

DOI: 10.3233/ISP-1968-1517201

Journal: International Shipbuilding Progress, vol. 15, no. 172, pp. 401-417, 1968