Academics – Naval Architecture : 2017/JUL/06
Question
Q6. A model propeller of mean pitch 0.4 m is tested in a tank under conditions of constant speed of advance 2 m/s in fresh water of density 1000 kg/m3 and the results for a range of rotational speeds are as shown in Table Q6.
(a) Plot a curve of propeller efficiency against real slip. (12)
(b) Determine EACH of the following at maximum propeller efficiency:
(i) real slip; (1)
(ii) rotational speed. (3)
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