ose made by Mr. R. E. Froude, and re- experiment on one of the propellers are as follows : THRUST DYNAMOMETER.—This dynamometer con- ported on in 1886.t In these experiments, diameter, The power absorbed, the thrust developed, the revo- sists of a plunger and oil cylinder. They are accurately speed… … mercury gage for measur- PERFORMANCE OF these experiments, there- ing the pressure. In the fore, diameter, speed of ad- SCREW PROPELLERS. after end is an opening vance, and shape of blade giving free escape for such as well as number of blades are kept constant ; while 'The facilities of an…
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