Abstract
This paper presents the results of an extensive research program carried out at the Netherlands Ship Model Basin during the period from 1969 to 1972. This program concluded the investigations carried out in the period from 1963 to 1969 concerning various high-speed propulsion problems. Results are given of investigations into friction reduction and cavitation suppression by polymer injection. A computer program for the unsteady lifting surface theory for ship screws was extended and some results obtained are given. Some results of a study on low-noise propellers are presented. Measurements of blade stresses of propellers in a homogeneous flow are given and discussed. Towing test results with an air-water ramjet prototype are presented. Finally, ship motion studies on a compact frigate are reported.
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