The Influence of Several Cable-Type Supports upon the Static Pressures along the Centerline Tube in a Transonic Wind Tunnel
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
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Tests were conducted in the Transonic Model Tunnel to determine the effect of 10 different cable-type support systems for a centerline tube on the static pressures measured on this centerline tube. These tests were conducted at Mach numbers from 0.80 to 1.30 and included varying the angle of sweep of the supporting wires. the wire size. and the method of attaching the wires to the centerline tube. The local Mach number distributions measured on the centerline tube. with and without these wire support systems. are presented. as well as the resultant errors in Mach number for the configuration showing the least disturbances, The results indicate that the most desirable support system should utilize wires having a high degree of sweepback and should be attached to the centerline tube without any protruding fixtures. The data at the higher Mach numbers indicate that the intensity and extent of the disturbances may tend to build up downstream of the support and become serious on wires swept back at the Mach angle.
- Test Facilities, Equipment and Methods