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Qualified r e q u e s t e r s m a y obtain copies of this report d i r e c t from Defense Documentation Center, Cameron Station, Alexandria, Virginia 223 14 This r e p o r t has been r e l e a s e d to ABSTRACT F o r c e m e a s u r e m e n t s and visual observations w e r e m a d e in a w a t e r tunnel on fully wetted and ventilated flows past a family of conical ring wings having a flat plate section geometry. The diameter-chord ratio was varied f r o m one to three, and the total includeddoi:10.1115/1.3610082 fatcat:nbo624z63raatmfxczfpj6z2m4