Abstract: Winglets being a small structure play an important role in reducing induced drag in an aircraft. The drag breakdown of a typical transport aircraft shows that the lift-induced drag can amount to as much as 40% of the total drag at cruise conditions and 80–90% of the total drag in take-off configuration. One way of reducing lift-induced drag is by using wingtip devices. GEO-777 specifications are taken to perform with a spiroid winglet. Indeed, the total drag count reduced with the help of winglets. A model composed of wing of boeing-777 is designed using CATIA and also the spiroid winglet are designed and attached with a boeing 777 wing using CATIA. Then the modelled wing is meshed using CFD. The meshed model will be analysed using ANSYS FLUENT. Finally, the difference in calculations is calculated using the analysis results.
Keywords: Winglet, Induced drag, Spiroid winglet, CATIA, CFD, ANSYS FLUENT
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