SUBJECT INDEX 



Fatigue, in amphibian tractor grousers, 66H 

 Fatigue strength, of materials, T-IO^I, T-122 



of submarine hulls, T-l89 

 Fatigue tests, ^Jk 



on amphibian tractor grousers, 664 

 Federal Shipbuilding and Dry Dock Company, tanker, 



single-screw, model tests of, JSJj ^20 

 Perry, 290-foot, power characteristics of, model, 



695, 695A, 695B 

 Fighter BSl , experiments with model of, 33 

 Fighting ships, remodeling of, T-82 

 Figures, preparation of, R-1 28 

 Filter, electrical, in transducers, 521 

 Firing tests, of ELLYSON (DDU5U), full-scale, R-57 

 Fittings, for valves, hydrostatic tests of, 637, 



638 

 Fleet tanker. See Tanker. 



Plettner wind rotors, for ship propulsion, T08 

 Float, catamaran, model, R-251 , R-3U0 



displacement, for supporting submerged loads, 



573 

 5000-pound single, tests on, model, T+2 

 for astern fueling, R-366 



planing, design and performance of, model, ^kO 

 for supporting submerged loads, 573 

 Float problems, solution of, 5U0 

 Floating drydock. See Drydock, floating. 

 Floats, airplane, model, 222 

 airplane type of step in, 438 

 seaplane. See Seaplane floats. 

 Plow, about airfoil, photographs of, model, 557 

 about parallel cylinders, 485 

 about ships and ship models, instruments and 



methods for measuring, U87 

 axial, pressure distribution for, T-220 

 displacement, around hull, model, T-85 

 investigation of, on ship model, T-53 

 theory of, T-U8 

 See also Airflow. 

 Plow lines, delineation of, 535 

 of planing hull, model, 669 

 See also specific ship or model test. 

 Fluid, direction of velocity in, instrument for 

 determining, T-n7 

 pressure in, elastlC-tube gage for measuring, 

 627 

 instrument for determining, T-'n7 

 FLUSSER (DD368), service strain on, full-scale, 

 U67 



Flying boats. See Seaplane floats; Seaplane 



hulls; Sea-sled. 

 Foamglas, reduction in buoyancy v.'hen submerged 



deeply in water, R-1 96 

 Foettinger, torque converter, 590 



water brake, 7'''' 

 Forced-vibration calculation, of hull vibration, 



by digital process, 71 5 

 Forces and moments, on ship appendages, six- 

 component dynamometer for measuring, 692 

 Form resistance of ships, 392 

 Formica, stress-strain characteristics of, R-74- 

 Forms. See Bodies. 

 Formulas, for frames, T-n9 

 for stress, T-28 



friction, Schoenherr. See Schoenherr friction 

 formula . 

 Fouling of ships' bottoms, 398 

 Frame, testing, for multidirectional loading of 



models, development of, 599 

 Frame formulas, T-119 

 Freighter, Great Lakes, resistance tests of, 



model, 618 

 Frequency, entrainment of, 558 



of background noise In test basins, 643 

 of hull vibration, calculation of, 632, 706 

 See also Vibration. 

 Frequency analyzer, 614-3 



Frequency deviation methods, for measuring mechani- 

 cal changes, R-79 

 Friction formula, Schoenlierr. See Schoenherr 



friction formula. 

 Prictional resistance, 193, 227, 267, 275, 333 

 determination of, methods of, 663 

 due to lapped butts, 73 

 due to temperature, 267, 333 

 effect of roi;ighness on, 729 



effect of transverse curvature on, 689, 726, 729 

 equations for, 267 



reduction of, by hull design, model, II7 

 research progress report for ATTC, 726 

 theory for smooth flat plate with turbulent 

 bo'jndary layers, 726 

 Prictional resistance coefficients, British, 

 conversion of, 657 

 tabulation of, 576 

 Prictional values, determination of, 360 

 Froude, W. , and Proude, R.E. , resistance experi- 

 ments of, 663 



