79 



SUBJECT INDEX 



Sensitization of polyvinyl alcohol, as coat- 

 ing for printing plates, T-1 79 

 Service strain tests, on hull structure, 

 full-scale, 467 

 technique and procedure, full-scale, 468 

 Shaft bearings, friction in, 360 

 reduction of vibration in, T-39 

 Shaft bossing, on HAMILTON (DD141 ), vibration 



tests on, full-scale, 305 

 Shaft horsepower characteristics, of tanker, 



model, 620, 646 

 Shaft stresses, circuits for measuring, R-187 



in submarine chaser, full-scale, R-187 

 Shaft struts, effect of, on propulsion, 256 

 Shallow water, effect of, on performance, 

 model, 640 

 effect of, on resistance, 408, 4l4, 460; 



T-56, T-84 

 wave of translation in, 4o8 

 Shear, of stiffened plates", T-31 

 Shekleton's report on underwater explosions, 



479 

 Shell shock, T-1 55 

 Shells, eight-oared, tests of, full-scale 



and model, 283 

 Shimmer method of photography, for recording 



explosion phenomena, T-121, T-1 56 

 Ship calculations, graphic integrator and 



differentiator, T-124 

 Ship design, model, 298 



Ship models, building of, at U.S. Experimental 

 Model Basin, 323 

 effect of size on predicted effective 



horsepower, 6l8 

 essential specifications for, R-334 

 geometrically similar, towing tests of, 6l 5 

 self-propelled, conditions for testing, 



T-127 

 wooden versus paraffin, 319 

 Ship plates, iron and steel, 474 

 Ship propellers, singing of, T-123 

 Ship trials, methods and equipment, 476 

 Shipboard Fighter BS1 , experiments with 



model of, 33 

 Shipbuilding, theory of elasticity in, T-2 



theory of strength in, T-1 7 

 Ships, frequencies of. hull vibration of, 



calculation of, 582 

 Shock. See Impact; Shell shock. 



Shock measurement, with crystal accelerometer, 



R-246 

 Shock testing machine, motions and stresses 



In, 536 

 Shock waves, in liquids and solids, propagation 

 of, T-139 

 in water, measurements of, T-213 



photographic study of, R-77, R-203 

 -protection against, R-49 

 Silver-plating, Brashear process, R-267 

 Similitude, laws of, in model tests, T-194 

 SIMON BOLIVAR, propulsion data for, model, 

 T-68 

 tests on, model, T-67 

 Singing of ship propellers, T-123 

 Sink. See Source-sink. 



Sinkage, of ships in shallow water, model, 640 

 Skeg, effect of on resistance of high-speed 

 target, 641 

 on WASHINGTON (BB56), natural frequency of,, 

 full-scale, R-22 

 Skin friction, 193, 227, 267, 275, 333 

 Slip stream. See Flow. 

 Sound, insulation against, T-99 

 Sound waves, anomalies in propagation of, T-41 

 Source-sink envelope, of a torpedo form, 271 

 Spark camera, high-speed, T-207, T-213 

 Sparks, electric, brilliance and duration of, 



T-l6l 

 Spectacle frames, effect of, on propulsion, 



256 

 Speed, uniform, of streamlined falling body, 



R-42 

 Speed data, for NEW MEXICO (BB40), full-scale 



and model, R-139 

 Speed meter, for airplane catapult, 126 

 Sperry roll and pitch recorder, 11 6 

 Square-wave generator, R-201 

 Stability, of body falling through fluid, R-42 

 of ships, method of determining, T-202 

 of stiffened plates, 402 [T-8] 

 of trawler models, T-75 

 Stability on course, theory of, T-l80 

 Stability problems, in compressed plates, T-79 



in thin cylindrical shells, T-33 

 Stabilization, of CONTE DI SAVOIA, power cosJt 

 of, full-scale, 430 

 of cylinder towed through fluid, R-68 

 of ships, by vanes, model, R-130 



