99 



SUBJECT INDEX 



Plates [Continued] 



deflection of, 506, 6l , 6l1 , 635, 636; 



R-66, R-142 

 deformation of, 490, 491 , 492, 509, 527, 

 532, 6l1; R-202, R-244, R-248, R-254, 

 R-265, R-279, R-280 

 effect of joint eccentricity on strength 



of, 440 

 effect of stiff eners on, 452, 635; T-31 , 



T-78 

 energy absorption of, 635, 636; R-248, 



R-280, R-296 

 flat, cavitation flow about, T-22l| 

 critical strength of, R-1 

 frictional resistance of, 689 

 tensile strength of, 446 

 free-edge, impact measurements on, 488 

 fused-quartz and plastic, resistance to 



underwater explosions, R-296 

 in assemblies, strength of, 452 

 pressure on, 527 

 quartz, in transmitters, T-1 48 

 steel, energy absorption of, 635 > 636; R-296 

 fracture of, R-271 

 plastic strain and deflection tests on, 



R-66, R-1 42 

 resistance to underwater explosions, 61 0, 



611 

 rupture of, 6l1 ; R-265, R-276 

 transition temperature of, in notch- 

 tensile tests, 709 

 stiffened, stability of, 402 [T-8] 

 stressed, load capacity of, T-76 

 under lateral impact, T-135 

 Plating, strength of, under edge compression, 



469 

 Plywood, for ship propellers, R-206 

 Polynomial equation, method for calculation 

 of roots of, 568 

 sixth degree, coefficients for, 7" 1 9 

 for bodies of revolution, 7 1 9 

 tables for, 71 9 

 Polyvinyl alcohol, sensitization of, for 



printing plates, T-179 

 PONTCHARTRAIN (WPG70), vibration data for, 



full-scale, R-294 

 Pontoon. See Seaplane floats. 

 Portable strain gage, 272, 292 



Position indicator, towed, 540, 768 

 Power, for ship propulsion, estimate of, 132 

 in formation flying, saving of, T-239, T-240 

 See also Effective horsepower. 

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



and model, R-1 39 

 Power supply, d-c, for laboratory work, 526 

 d-c, in electronic development work, 526 

 regulated, 561 

 Prandtl micromanometer , improvement of, T-1 62 

 Pressure, blast, measurement of, R-282 



engine, electrical device for indicating, 559 

 in fluid, elastic-tube gage for measuring, 627 



instrument for determining, T-1 1 7 

 internal, in tubes, elastic stresses caused 



by, T-226 

 on airship hulls, T-1 

 on bubbles , 51 

 on cylindrical tubes, 309 [T-5], 356, 



366 [T-6], 385, 396 

 on gable and hip roofs , T-1 1 6 

 on ship model, T-53 



on valves and fittings, high-pressure steam, 

 596, 638 

 low-pressure water, 637 

 Pressure coefficient, definition of, 647 

 Pressure distribution, over bodies of revolution 



for axial flow, T-220 

 Pressure gage, 479, 523; R-1 57. R-202, R-282 

 calibration of, 625, 627; R-269 

 capsule-type, for measuring hull pressures, 



753 

 conde'nser-type , development and theory of, 625 



instruction manual for, 680 

 diaphragm-type , for measuring low pressures 



in fluids, 665 

 elastic-tube, 627 

 Pressure-time records, for thin-walled tubes, 



T-226 

 Pressure vessels, rules for construction of, 



329, 356, 387 

 Pressure waves, around sphere of gas, 51 7 

 produced by blasting and gunfire, T-1 02 

 PRESTON (DD327), modulus of elasticity of 



steel from, full-scale, 31 8 

 Printing, photolith method, T-1 38 



photomechanical methods, T-43 

 Printing plates, sensitization of coating for, 

 T-179 



