NEW RESEARCH RESOURCES AT THE DAVID TAYLOR MODEL BASIN.
Research and Development rept.,
DAVID TAYLOR MODEL BASIN WASHINGTON D C
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The paper describes briefly many of the new laboratory facilities and instruments in the field of ship model research. A planar-motion mechanism now provides hydrodynamic coefficients for the differential equations of motion, a heaving towpoint simulates ship pitching for bodies towed over the stern, a boundary-layer research tunnel reveals the effects of pressure gradients, differential transformers permit miniaturized transducers and remote digital recording, a pneumatic wave-maker generates a programmed frequency spectrum, a large transonic tunnel provides high Reynolds numbers in air, a submarine test tank extends the scope of structural research, a flutter dynamometer explores the phenomenon on control surfaces in water, a large variable-pressure water tunnel provides for testing contra-rotating propellers, and seakeeping and rotating-arm basins add new dimensions to research in naval architecture at the David Taylor Model Basin. The gamut in size runs from a 6-knot towing carriage for a 57-ft model basin to a 60-knot towing carriage for a 2968-ft basin, and from a transient-thrust dynamometer that serves as the strut barrel of a ship model to a 40,000-lb vibration generator that excites full-scale ship structures. Author
- Marine Engineering
- Test Facilities, Equipment and Methods