90 



SUBJECT INDEX 



Formica, stress-strain characteristics of, R-7^ 

 Forms. See Bodies. 

 Formulas, for stress, T-28 



friction, Schoenherr. See Schoenherr fric- 

 tion formula. 

 Fouling of ships' bottoms, 398 

 Frame, testing, for multidirectional loading of 



models, development of, 599 

 Fredholm integral equations, first kind, for 

 calculation of flow about elongated 

 bodies of revolution, ~[6~\ 

 Freighter, Great Lakes, resistance tests of, 



model , 6l 8 

 Frequency, entrainment of, 558 



of background noise in test basins, 643 

 of hull vibration, calculation of, 632, 706 

 See also Vibration. 

 Frequency analyzer, 643 

 Frequency deviation methods, for measuring 



mechanical changes, R-79 

 Friction formula, Schoenherr. See Schoenherr 



friction formula. 

 Frictional resistance, 193, 227, 267, 275, 333 

 determination of, methods of, 663 

 due to lapped butts, 73 

 due to temperature, 267, 333 

 effect of bottom paint on, 789 

 effect of roughness on, 729 

 effect of transverse curvature on, 689, 



726, 729 

 equations for, 267 



reduction of, by hull design, model, 117 

 research progress report for ATTC , 726 

 theory for smooth flat plate with turbulent 

 boundary layers, 726 

 Frictional-resistance coefficients, British, 

 conversion of, 657 

 tabulation of, 576 

 Frictional values, determination of, 360 

 Froude, W. , and Froude , R.E. , resistance ex- 

 periments of, 663 

 Froude and Schoenherr frictional constants 



compared, 657, 729 

 Froude naval experimental station, establish- 

 ment of, T-8l 

 Froude's law, as applied to ship model tests, 



T-1 94 

 Fueling floats, model-basin tests of, R-366 



GABLE roof, pressure distribution on, T-ll6 

 Gage. See specific gage. 

 Gage diaphragm, derivation of response, 625 

 Gas bubbles, cataphoresis of, T-1 37 

 damping of vibration by, T-1 58 

 in liquids, industrial uses of, R-83 

 size of, T-108, T-110, T-111 

 speed of rise, T-1 46 

 spherical, vertical motion of, 5" 1 

 vibration of, T-1 09 

 See also Gas globe. 

 Gas bubbles and droplets, in liquids, size of, 



T-108 

 Gas expulsion, by supersonic waves, T-1 42 

 Gas globe, displacement of, in water, T-1 71 

 effect of gravity on, R-l 82 

 oscillation of, in underwater explosions, 



T-209 

 pressure changes in, T-1 59 

 pressure on, 520 

 underwater, 512, 517 

 Gas turbines, bibliography, T-1 77 

 cooling of, T-1 98 

 development of, T-1 77 

 entropy diagrams for, T-94 

 Gases, disperse, T-112, T-113, T-114, T-115 



disperse, colloidal physics of, T-1 25 

 General Electric slow-motion camera, T-1 49 

 Generator, linear-sweep, 483 

 George G. Sharp. See Sharp, Geo. G. 

 German, ex-, destroyers Z-37 and Z-39. hydro- 

 static test's of steam valves from, 596 

 German "E" Boat, apparent slip and tactical 



diameters of, full-scale, 628 

 German minesweeper, R130-Class, reduction and 

 analyses of trials for, 649 

 R130-Class, trials conducted, full-scale, 649 

 German ships, launching of, full-scale and 



model, T-1 00, T-105 

 German SS NJASSA, test station aboard, T-63 

 German versus U.S. trial results, on German 



minesweeper EMS-1 , 649 

 Girders, box, effective width in, T-50 

 box, stress on, 441; T-28 

 warping of, with off-center welds, T-93 

 See also Beams. 

 Glass plate, projectiles fired through, T-107 

 Globe. See Gas globe. 



