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DTIC ADA1001353: Some Remarks on Buffeting. |
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by Defense Technical Information Center |
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Buffeting is defined as the structural response to the |
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aerodynamic excitation produced by separated flows. The |
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aerodynamic excitation produced by bubbles, vortices and |
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transonic flows is discussed. Different buffeting |
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criteria for the wings of fighter and transport aircraft |
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are developed. Methods of predicting the onset and |
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severity of buffeting are reviewed. Some typical examples |
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are discussed, in which improvements in wing buffeting |
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are compared with changes in mean force measurements. The |
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first buffeting measurements on ordinary models in a |
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cryogenic wind tunnel are analysed. The measurements |
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confirm that cryogenic tunnels can separate Reynolds |
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number and aeroelastic effects. The frequency parameter |
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must be correct on the model if the aerodynamic |
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excitation does not have a flat spectrum, as at vortex |
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breakdown on a slender wing. The violet periodic flows at |
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transonic speeds recently observed on thick biconvex |
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aerofoils are briefly reviewed and compared with |
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solutions of the full Navier-Stokes equations. (Author) |
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Date Published: 2020-01-26 11:42:50 |
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Identifier: DTIC_ADA1001353 |
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Item Size: 26725030 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Mabey,D G ; ROYAL AIRC... |
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