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NASA-TN-D-8260
A design approach and selected wind tunnel results at high subsonic speeds for wing-tip mounted winglets
Year: 1976
Abstract: Winglets, which are small, nearly vertical, winglike surfaces, substantially reduce drag coefficients at lifting conditions. The primary winglet surfaces are rearward above the wing tips; secondary surfaces are forward below the wing tips. This report presents a discussion of the considerations involved in the design of the winglets; measured effects of these surfaces on the aerodynamic forces, moments, and loads for a representative first generation, narrow body jet transport wing; and a comparison of these effects with those for a wing tip extension which results in approximately the same increase in bending moment at the wing-fuselage juncture as did the addition of the winglets.
Subject: AERODYNAMIC DRAG
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:17:12Z | |
| date available | 2017-09-04T15:17:12Z | |
| date copyright | 01/01/1976 | |
| date issued | 1976 | |
| identifier other | MMBBFEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/16559 | |
| description abstract | Winglets, which are small, nearly vertical, winglike surfaces, substantially reduce drag coefficients at lifting conditions. The primary winglet surfaces are rearward above the wing tips; secondary surfaces are forward below the wing tips. This report presents a discussion of the considerations involved in the design of the winglets; measured effects of these surfaces on the aerodynamic forces, moments, and loads for a representative first generation, narrow body jet transport wing; and a comparison of these effects with those for a wing tip extension which results in approximately the same increase in bending moment at the wing-fuselage juncture as did the addition of the winglets. | |
| language | English | |
| title | NASA-TN-D-8260 | num |
| title | A design approach and selected wind tunnel results at high subsonic speeds for wing-tip mounted winglets | en |
| type | standard | |
| page | 33 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1976 | |
| contenttype | fulltext | |
| subject keywords | AERODYNAMIC DRAG | |
| subject keywords | CONTROL SURFACES | |
| subject keywords | DRAG REDUCTION | |
| subject keywords | LIFT DEVICES | |
| subject keywords | SUBSONIC SPEED | |
| subject keywords | WIND TUNNEL TESTS | |
| subject keywords | WING FLAPS | |
| subject keywords | WING TIPS |