69 



SUBJECT INDEX 



Direction of velocity in fluid, instrument 



for determining, T-l 1 7 

 Disperse gases, T-112, T-113, T-l 14, T-l 1 5 



colloidal physics of, T-l 25 

 Displacement boats, testing of, model, 153 

 Displacement float, for supporting submerged 



loads, 573 

 Displacement flow, around hull, T-85 

 Distant-reading apparatus, 340 

 Ditto process, instructions for, R-356 

 Diving bell, strength of, model, 315 



towing of, model, 288 

 Documentation, of technical literature, T-l 8l 

 Drydock, floating, forces on stern-gate op- 

 erating mechanism, model, R-310 



floating, model, fk 

 DupliMAT process, instructions for, R-356 

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



on structures, R-30 

 Dynamic load factor, 572 

 Dynamical analogues, integration by, R-140 



"E" Boat, German, apparent slip and tactical 



diameters of, full-scale, 628 

 EAGLE Class patrol boats, moment of wind on, 



model, 15 

 Eccentricity, joint, effect of, on strength 



of plates, 440 

 Eddies, 485 



separation of, T-184 

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

 Edge compression, strength of plates under, 



469 

 Effective horsepower, methods of predicting, 

 576 

 of ships, comparison of, model, 6l 9 

 of tankers, model, 620, 646 

 Eight-oared shell, design and propulsion of, 



model, 117 

 Elastic stability, of tee stiffeners, 457 

 Elastic structures, impact on, 48l 



static loads in, 507 

 Elasticity, measurement of, on WOLF, full- 

 scale, T-45 

 modulus of, of materials for periscope 



tubes, R-l6 

 of box girders, 441 

 of ships, full-scale, 297; T-2 



Elasticity, of ships (Continued) 

 model, 298 

 theory of, 294 



in shipbuilding, T-2 

 Elaterite, frictional resistance of, 14 

 Electric power supply system, 561 

 Electric sparks, brilliance and duration 



of, T-l 6l 

 Electrical analogy, use of in solving vibra- 

 tion problems, R-226 

 Electrical engine-pressure-indicating device, 



559 

 Electrical insulators, rigging, tensile tests 



of, 587, 593 

 Electrographic oscillograph, T-l 51 

 Electrography, T-l 67 

 Electromagnetic damping apparatus, 269 

 Electromagnetic distant-reading apparatus, 340 

 Electronic methods of observation, R-51 , R-5 1 *. 



R-62, R-78, R-79, R-86, R-201, R-214 

 Electronic regulation, of d-c power supply, 



526 

 Electronic voltage regulator, 483, 502; R-45, 



R-51 , R-62 

 Elin-Hafergut method of welding, T-l 87 

 ELLYS0N (DD454), gunfiring trials on, full- 

 scale, R-57 

 Energy absorption, of circular plate, R-202 

 Energy-compression curves, for copper balls, 



R-240 

 Engine, marine, stopping and reversing, T-106 



See also specific kind of engine. 

 Engine-pressure-indicating device, electrical, 



559 

 Entrainment of frequency, 558 

 Entropy diagrams, internal-combustion engines, 



T-94 

 Equations, methods of solution of, T-77 



polynomial, method for calculation of roots 



of, 568 

 Erosion, bibliography, T-l 88 



^by cavitation, T-l 33, T-l 88 

 European diary, of Capt. H.E- Saunders, R-365 

 European method of testing self-propelled 



models, T-l 27 

 European model basins, variable-pressure water 



tunnel of, T-98 

 Everdur brazing, for welding models, R-347, R-3^8 



