77 



SUBJECT INDEX 



Propulsion (Continued) 



by wind rotors, 108 



components of, scale effect on, T-68 



efficiency of, "147 



of battleships, model, 429 



of destroyers, full-scale and model, 390 



of passenger ship, model, 598 



of SALINAS (A019). full-scale, 350 



of ships, economic, T-34 



in shallow water, model, 640 



power for, estimate of, 132 

 Propulsion tests, model, 629 



on tanker, model, 646 

 Propulsive performance, with bosses, full- 

 scale and model, 403 



with struts, full-scale and model, 403 



Quartz gage, for measuring underwater ex- 

 plosion pressures, 523 

 Quartz plates, in transmitters, T-148 



Reflecting wall, wave destruction at, 296 

 Reinforced concrete, effect of bombs on, 



T-165 

 Reinforced tubes, under external pressure, 



262 

 Relaxation oscillations, 564 

 Remodeling fighting ships, T-82 

 Reports, preparation of, R-220 



typing and layout of, R-225 

 Re.scue chamber, strength of, model, 315 



towing of, model, 288 

 Resistance, effect of condenser scoops on, 

 model, R-43 

 effect of restricted channel on, 460 

 effect of roughened hull on, model, T-67 

 effect of shallow water on, model, 408, 



414, 640 

 form, of ships, model, 392 

 frictional, 193, 227, 267, 275. 333 

 due to lapped butts, 73 

 due to temperature, 267, 333 

 equations for, 267 

 minimum, in hulls, T-69 

 of armor, 24, 463 

 of battleships, model, 429 

 of cable for towing a float behind a 

 ship, 418 



Resistance (Continued) 



of motor boats, V-bottom model, R-35. R-47 



of passenger ship, model, 598, 623 



of ships, in canal locks, model, 189 

 in shallow water, T-56, T-84 



of steel, to shock loads, R-30 



of structures, to explosive load, R-30 



of towed targets, model, 588, 595 • 630 



of trawler models, T-75 



of water-filled cylinder under pressure, T-186 



reduction of, by air film, R-131 



residuary, of ships, 39 2 

 Resistance distant-reading apparatus, 340 

 Resistance gage, 523 



See also Wire-resistance strain gage. 

 Resistance-test data, method of calculating 



effective horsepower of ships from, 576 

 Resistance tests, on freighter, Great Lakes, 

 model, 6l8 



on 2 -foot model submitted by Prof. K. Davidson, 

 333 

 Resonance, nonlinear, 558 

 Restricted channel tests, for the Panama Canal, 



579 

 Restricted channels, effect of, on resistance, 



460 

 Retardation of a vessel after launching, model, 



R-24; T-100, T-105, T-182 

 Reynolds numbers, in relation to model ship 



tests, T-194 

 Rigging insulators, fiberglas micarta, tensile 

 tests of, 593 

 porcelain, tensile tests of, 587 

 Rigid-frame knees, strength of, R-53 

 Rigid-frame models, tests of, R-63 

 Ring-type pickup extensometer, T-l 64 

 Roll recorder, 11 6 

 Roll stabilization, power cost of, on C0NTE 



DI SAV0IA, full-scale, 430 

 Rolling, damping of, model, 442 

 factors affecting, 348 

 - in waves, 301 , 303 

 measurement of, model, 433 

 of cruisers, model study of, 295 

 of PENSAC0LA (CA24), full-scale, 31 6 

 of proposed 1935 battleship hull, 374 

 reduction of, model, R-130 

 testing of models in, 433 



