by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English
|Statement||Marie H. Tuttle and Blair B. Gloss.|
|Series||NASA technical memorandum -- 81909.|
|Contributions||Gloss, Blair B., United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., Langley Research Center.|
|The Physical Object|
|Pagination|| p. :|
|Number of Pages||34|
interference by an overhead support strut. Wheel support stings were found to produce an increase in lift. The compilation of both the overhead strut and wheel stings cause a combined effect on both lift and drag. INTRODUCTION Traditionally, aeronautical wind tunnels used balances external to the tunnel with the model mounted. Wind Tunnel Model Support Strut Interference. To decrease the effects of strut on the jet flow-field, we took sharp belly strut to support the model in the wind tunnel. The belly strut could. Wall and Support Interference Corrections of NASA Common Research Model Wind Tunnel Tests in JAXA Masataka Kohzai 1, 4Makoto Ueno. 2, Seigo Koga. 3, Norikazu Sudani. Japan Aerospace Exploration Agency, Chofu, Tokyo, , Japan. In the JAXA 2m x 2m Transonic Wind Tunnel (JTWT), there have been more needs of. unconventional place: the wind tunnel. The aim of this paper is to study the aerodynamic interference effects of two different stings supporting an aircraft model during wind tunnel tests. The flow field and forces distortion caused by the stings were deduced by comparing simulations with and without support.
obtained during investigations of models in wind tunnels requires that support tares be evaluated and applied to the uncorrected data. In most high-speed wind-tunnel research involving body, wing-body, or complete airplane combinations, stings generally are used to support the models and the models have more or less axisymmetrical aft ends. AS. Aug 09, ·  Mouton S., “ Numerical Investigations of Model Support Interference in Subsonic and Transonic Wind Tunnels,” 8th ONERA-DLR Symposium ODAS, ONERA/DLR, Göttingen, Oct. Google ScholarAuthor: Andreas Waldmann, Thorsten Lutz, Ewald Krämer. WIND TUNNEL INTERFERENCE FACTORS FOR HIGH-LIFT WINGS IN CLOSED WIND TUNNELS Robert Glenn Joppa SUMMARY A problem associated with the wind tunnel testing of very slow flying aircraft is the correction of observed pitching moments to free air conditions. The most significant effects of such corrections are to be found at moderate downwash an-. The low-frequency and large-amplitude coupled vibration of the support sting in wind tunnel affects the accuracy of the wind tunnel test’s data. An active vibration control system of support sting in wind tunnel is demonstrated using adaptive control method in this paper. Following the establishment of the finite element model, and the extraction of parameter matrix, the original model is Author: Yujin He, Shougen Zhao, Donghai Li, Tao Li.
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. The flow about a 3D model in a wind tunnel is influenced by the walls and by the model suspension. This has to be accounted for by corrections. The transonic tunnel of DNW Göttingen is equipped with a two-dimensional adaptive test section of 1 ×1 m 2, with Author: Hartmut Holst, Markus Jacobs, Sieghard Tuschet. Apr 03, · Support Strut Interference Effects on Passenger and Racing Car Wind Tunnel Models In order to provide a correct aerodynamic simulation of a vehicle traveling along the ground, models are tested using rotating wheels in a wind tunnel with a moving ground. In the most common of configurations the model is supported by a vertical strut, Cited by: The desire to measure the component of total drag attributed to an aircraft's tail assembly, together with the continuing need for better model support corrections, has brought about the design and implementation of twin-sting support for the wind tunnel. This support system was first installed in the S2MA wind tunnel during