hose 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.f In these experiments, diameter, The power absorbed, the thrust developed, the revo- sists of a plunger and oil cylinder. They are accurately… … —is to be introduced. In mercury gage for measur- APFABATUS FOB DETEBHININ6 THE INFLUENCE OF SUBFACE ON THE PEBFOBHANCE OF these experiments, there- ing the pressure. In the SCBEW FBOFELLEBS. fore, diameter, speed of ad- after end is an opening vance, and shape of blade giving free escape for such…
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