Acceptance testing of thrusters involves static thrust measurements. Various static thrust measuring systems are shown. Thrust balance types include parallelogram, bell crank, vertical beam, direct hanging, direct weighing, floating lateral, rolling lateral, and sliding lateral. The principle of null positioning to insure accuracy is discussed. Methods of detecting the onset of cavitation are presented. Common errors in thrust measurements are shown. The paper also includes the general extrapolation relationships for thrusters and a relationship between net thrust and forward speed.
Static testing of underwater thrusters
Statische Pruefung von Unterwasser-Schubantrieben
1984
4 Seiten, 7 Bilder
Aufsatz (Konferenz)
Englisch
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