This paper presents the techniques and results of a full-scale test program to measure the installed performance of two different large centrifugal fan impellers onboard the US Navy’s Landing Craft Air Cushion (LCAC). Each impeller, having a different number of blades and different blade profiles, was tested first as a single fan and then in the intended coupled pair, close-proximity design configuration. Results provided include non-dimensional flow versus pressure curves and non-dimensional flow versus power curves. Single fan performance is compared to coupled operation for both designs, and the effects of installation losses are estimated. Finally, a pitot traverse test is conducted to further substantiate the test data.
Performance Measurements of Large Centrifugal Impellers in a Single and Coupled Configuration
Cole, Robert E., and Joseph J. Ricci. "Performance Measurements of Large Centrifugal Impellers in a Single and Coupled Configuration." Paper presented at the SNAME Maritime Convention and 5th World Maritime Technology Conference, Providence, Rhode Island, USA, November 2015. doi: https://doi.org/10.5957/WMTC-2015-022
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