Support Interference on an Ogive-Cylinder Model at High Angle of Attack in Transonic Flow
Final rept. 1 Jul 1976-30 Sep 1977
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
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A combined experimental and analytical study was conducted to determine the relative magnitude of the support and tunnel wall interferences on an ogive-cylinder model at a high angle of attack in transonic flow. The tests were conducted in the AEDC Aerodynamic Wind Tunnel 4T. The results indicate that the strut support causes large reductions in the normal force on the model, while the effect attributable to the sting support is much smaller. A correction procedure applied to the data to remove support interference gives consistent results. The test data, combined with an inviscid analytic study, indicate that the wall interference effects were negligible. Solutions obtained using two computational methods compare well with experimental results.
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