9^^ 



SUBJECT INDEX 



Plates [Continued] 



quartz, in transmitters, T-148 

 steel, energy absorption of, R-2Q6 

 fracture of, R-271 

 plastic strain and deflection tests on, 



R-66, R-Il|2 

 resistance to undervjater explosions, 6lO, 6n 

 rupture of, 611; R-265, R-276 

 transition temperature of, in notch-tensile 

 tests, 709 

 stiffened, stability of, U02 [T-8] 

 stressed, load capacity of, T-76 

 under lateral Impact, T-135 

 See also Hammer-box diaphragms. 

 Plating, strength of, under edge compression, ^+69 

 Plywood, for ship propellers, R-206 

 Polynomial equation, sixth degree, coefficients 

 for, 719 

 sixth degree, for bodies of revolution, '|^9 



tables for, 71 9 

 method for calculation of roots of, 568 

 Polyvinyl alcohol, sensitization of, for printing 



plates, T-179 

 PONTCHARTRAIN, (VJPG70), vibration data for, full- 

 scale, R-29II 

 Pontoon. See also Seaplane floats. . 

 Portable strain gage, 272, 292 

 Power, for ship propulsion, estimate of, 132 



See also Effective horsepovrer. 

 Power data, for NEV; MEXICO (BBilO), full-scale 



and model, R-1 39 

 Pov/er supply, d-c, for laboratory v/ork, 526 

 d-c, in electronic development viork, 526 

 regulated, 561 

 Prandtl micromanometer, inprovement 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-117 

 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-1l6 

 on ship model, T-5 3 



on valves and fittings, high-pressure steam, 

 596, 638 



Pressure [Continued] 



on valves and fittings, low-pressure vrater, 637 

 Pressure coefficient, definition of, 64-7 

 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 

 condenser-tjrpe , 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, 517 

 produced by blasting and gunfire, T-1 02 

 PRESTON (DD327), modulus of elasticity of steel 



from, full-scale, 31 8 

 Printing, photolith method, T-138 



photomechanical methods, T-U3 

 Printing plates, sensitization of coating for, 



T-179 

 PRINZ EUGEN, launching data for, model, T-1 00 

 Prohl's method, for calculating flexural critical 



frequencies of ships, 582 

 Projectiles fired through various media, T-107 

 Propagation of sound waves, anomalies in, T-41 

 Propeller, Buonocore, T-1 63 

 trochoidal, tests of, 71 8 

 Propeller blades. Interference tests on, model, 



375 

 Propeller design, analysis of, 621 



Betz-Prandtl vortex theory, T-1 5 



and cavitation, T-1 8, T-23, T-2K 

 Propeller efficiency, T-1 31 

 Propeller-pump design, analysis of, 621 

 Propeller sections, T-1 8, T-23 

 Propeller struts, effect of, on steering of twin- 



screvf ship , 331 

 Propeller tests, 57, 187, 375; T-70 



analysis of, T-1 9 



comparative cavitation by several agencies, 732 



effect of scale of model on, T-37, T-54 



on DELAWARE (BB28), model, 66 



on SS TANNENBERG, full-scale, T-9I 



procedure for, 505 

 Propeller thrust, deduction of, U28 



measurement of, T-58, T-5Q 



