92 



SUBJECT INDEX 



Neoprene vjaterproof Ing, method of applying to 



strain gages, 627 

 Netherlands Model Basin. See Model Basin, 



Netherlands. 

 Netherlands SS ORANJE, design of, model, T-1 28 

 Neutrallzers, of vibrations, H-H-9 

 NEi'/ JERSEY (BB62), axial vibration of propulsion 



system of, full-scale, 55T 

 NEW MEXICO (BBf+G), speed and power data, full-scale 



and model, R-1 39 

 Nevrport News Shipbuilding and Dry Dock Company, 

 liner, rudder force test of, model, 607 

 tanker, single-screv/, model tests of, 653 

 Nevf York Shipbuilding Corporation, tanker, 



model tests of, 696, 696A, 695b 

 NJASSA, test station aboard, T-63 

 No-load tests, of German minesweeper EMS-1 , 



full-scale, 61+9 

 Noise, background, levels and frequency distri- 

 bution of in test basins, 6^3 

 hydrodynamic , development of hot-v/ire methods 



for velocity measurements in vjater, 592 

 isolation of, by mounts, progress report, 672 

 Nolse-lsolatlon mounts, evaluation of, progress 



report, 672 

 Noise survey, of ANDERSON (DD^Hl ) , full-scale, 

 R-12 

 of BAGLEY (DD386), full-scale, R-4, R-8 

 of HAI«ANN (DDU12), full-scale, R-1 2 

 of HUGHES (DDf+lO), full-scale, R-1 

 of UNG {DD399), full-scale, R-23 

 of MUGFORD (DD389), full-scale, R-U 

 of MUST IN (DD413), full-scale, R-U 

 of PHOENIX (CLl+6), full-scale, R-3 

 of RUSSELL {mK^^■), full-scale, R-1 9 

 of ST. LOUIS (CLU9), full-scale, R-7 

 of WICHITA (CA45), full-scale, R-15 

 Nonlinear boundary-value problem, T-1 92 

 Nonlinear mechanics 



analytical methods, 546 

 nonlinear resonance, 558 

 relaxation oscillations, ^6k 

 topological methods, 53'^- 

 NORTH CAROLINA (BB55), retardation after 

 launching, model, R-24 

 vibration data for, full-scale, 518 

 Notch stress, T-74 



OBH frequency analyzer, 64-3 



Ocean v/aves. See Waves, ocean. 



Oiler, AO9 Class, rudders of, model, 268 



AOI9 Class, propulsion and steering of, full- 

 scale, 350 

 BRAZOS (AOU), vibration of, full-scale, 263 

 CUYAM (AO3), elasticity of , full-scale, 297 

 service strain on, full-scale, 467 

 vibration of, 263 

 elasticity of, full-scale, 297 

 NETCHES (AO5), vibration of, full-scale, 263 

 PATOKA (A09), rudder resistance of, model, 268 

 SALINAS (AO19), propulsion and steering of, 

 full-scale, 350 

 vibration of, full-scale, 268 

 OKLAHOMA {BB37), natural frequency of, full- 

 scale, 263 

 One-way traffic In a restricted channel, 579 

 Optical system, of twenty-lens high-speed motion- 

 picture camera, R-34-5 

 Optograph, use of, T-211 

 ORANJE, design of, model, T-1 28 

 Ore carrier, 66o-foot, model tests of, 671 

 Orientation, of suspended body, R-37 

 Oscillating bodies, hydrodynamic increase in 



mass in, T-1 18 

 Oscillations, measurement of, in high seas, T-26 

 of gas globes In underwater explosions, T-209 

 of ships, determination of virtual mass for, 



T-225 

 relaxation, 3^^ 



self-excited, entralnment of, T-I70 

 Oscillator, sweep, ^+83 

 Oscillograph, electrographic, T-I51 

 Oscillograph loops, T-1 52 



Paddlewheels, model tests with, "76 



Paint. See kind of paint, e.g.. Bottom paint. 



Hot plastic. Zinc chromate. 

 Pallograph, 563; T-1 76 

 Panama Canal, model tests for design of, 601 



restricted channel tests for, 579, 601 

 Parachutes, for bombs, mines, and torpedoes, 



development of, T-215 

 Paraffin models versus wooden models, 319 

 Paraffin models. See also Wax models. 

 Parallel cylinders, flow about, I185 

 Parametric excitation, 558 

 Paravanes, 533 

 Paris Turning Basin, T-222 



