87 



SUBJECT INDEX 



Destroyer [Continued] 



transom sterns on, tests of, model, 339 

 TUCKER (DD374), service strain on, full- 

 scale, 467 

 WOLF, elasticity tests on, full-scale, T-45 

 WORDEN (DD352), standardization trials, full- 

 scale and model, 403 

 Detonating blast-type explosions, T-1 68 

 DEWEY (DD349), service strain on, full-scale, 



467 

 Diaphragm blast gage, R-282 

 Diaphragm bulkheads, 280 



Diaphragm pressure gage, condenser-type, theory 

 and development of, 625 

 condenser-type, instruction manual for, 680 

 low-pressure type, theory and development 

 of, 665 

 Diaphragms. See Plates. 

 Diazotype, advantages of, T-43 

 Diesel engine, crankcases of, 501 

 dynamic strains in, R-1 54 

 for submerged submarines, T-1 97 

 Differential equations, 534, 546, 558, 564 

 for motion in viscous fluid, 267 

 for response to impact, 481 

 integration of, R-1 40 

 Differentiator, for ship calculations, T-1 24 

 Digital process, for calculation of amplitudes 

 of hull vibration, 71 5 

 for calculation of flexural modes of hull 

 vibration, 706 

 preparation of data for, 632 

 Direct-coupled amplifier, 644; R-86 

 Direction indicator, of a depth charge, R-46, 



R-51 

 Direction of velocity in fluid, instrument for 



determining, T-1 1 7 

 Disperse gases, T-1 12, T-113, T-1 14, T-1 15 



colloidal physics of, T-1 25 

 Displacement boats, testing of, model, 153 

 Displacement float, for supporting submerged 



loads, 573 

 Displacement flow, around hull, T-85 

 Displacement gage, retraction-type, applica- 

 tions of, 651 

 retraction-type, design and construction of, 

 651 

 evaluation of, 720 



Displacement measurements, retraction-type 



gage for, 651 

 Distant -reading apparatus, 340 

 Ditto process, instructions for, R-356 

 Diverters. See Paravanes. 

 Diving bell. See Rescue chamber. 

 Documentation, of technical literature, T-1 8l 

 DOMES, reduction of resistance of, model, R-131 

 Drag. See Resistance. 

 Dravo Corporation, river towboat, model tests 



of, 656 

 Drydock, floating, forces on stern-gate operating 



mechanism, model, R-31 

 floating, model, 74 

 DupliMAT process, instructions for, R-356" 

 Dye-diffusion method, for velocity measurement 



in water, 670, 700 

 Dynamic load, measurement of, R-154; T-65 



on structures, R-30 

 Dynamic load factor, 572 

 Dynamic stability, of midget submarine, German 



V-80, from wind-tunnel tests, T-227 

 Dynamical analogues, integration by, R-1 40 

 Dynamometer, ring, development of, 599 



six -component, for testing ship appendages, 692- 

 Dynamometer No. 5. towing, wind-drag tests on, 



model, R-344 



E.J. KULAS, ore carrier, vibration survey of, 



full-scale, 762 

 EAGLE Class patrol boats, moment of wind on, 



model, 15 

 Eccentricity, joint, effect of, on strength of 



plates, 440 

 Eddies, 485 



separation of, T-1 84 

 Eddy resistance, 193, 227, 267, 275, 333 

 Edge compression, strength of plates under, 469 

 Effective horsepower, methods of predicting, 576 

 Effective horsepower of ships. See specific 



ship or model test. 

 Eight-oared shell, design and propulsion of, 



model, 117 

 Elastic deformation, of thin shells, 606 

 Elastic stability, of tee stiffeners, 457 

 Elastic structures, impact on, 48l 



static loads in, 507 

 Elastic theory, of thin shells, 606; T-238 



