A new centrifuge permeameter was developed with the specific objective of expediting the measurement of the hydraulic characteristics of unsaturated soils. The development, theoretical basis, and typical results associated with using the centrifuge permeameter for concurrent determination of the soil water retention curve SWRC and hydraulic conductivity function K function of unsaturated soils are presented in this paper. Components developed for the centrifuge permeameter are described, including the centrifuge, permeameter, water flow control system, and instrumentation used to concurrently and nondestructively measure the infiltration rate flow pump and outflow transducer , volumetric water content time domain reflectometry , and matric suction tensiometers in flight during steady-state infiltration.