Accession Number : ADA258812


Title :   A Wind Tunnel Study of Magnus Effects on a Differentially Rotating Missile


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING


Personal Author(s) : Naselius, Karen A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a258812.pdf


Report Date : Dec 1992


Pagination or Media Count : 108


Abstract : This study investigates magnus effects on a non-firmed missile model which had three axially rotating sections that span at different rates. Five spin cases are examined; the mid section spinning only; the front and rear sections spinning only; all section spinning at the same speed; all sections spinning in the same direction with the mid section spinning at an additional ten revolutions per second; and all sections spinning with the mid sections spinning the opposite direction at an additional ten revolutions per second. These five cases are tested at three different spin rates for two different wind tunnel velocities. Since no research on differential spinning was found, potential flow theory of a single spinning cylinder is expanded to the differential spinning cases. Test results show that the measured Magnus forces and moments are much smaller than the potential flow predictions though most were in the predicted direction. Results also show that normal and axial forces are not affected by spin which agrees with Potential flow theory.


Descriptors :   *CYLINDRICAL BODIES , *SPINNING(MOTION) , TEST AND EVALUATION , VELOCITY , PREDICTIONS , WIND TUNNELS , POTENTIAL FLOW , THEORY , RATES , THESES , MOMENTS


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE