Wind Tunnel Analysis Presented by: Mary Elizabeth Pozydaev ME 498 November 16, 2004.

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Presentation transcript:

Wind Tunnel Analysis Presented by: Mary Elizabeth Pozydaev ME 498 November 16, 2004

Overview ObjectivesBackground Experimental Procedure ResultsConclusions

Objectives To measure lift and drag components & determine their coefficients To learn how to use a wind tunnel & gain a basic understanding of its applications

Background - Wing Shape SymmetricalStreamlined Affects Coefficients of Lift and Drag

Background – Angle of Attack α = angle between the chord line and relative wind Lift = vertical force acting on wing Drag = horizontal force acting on wing to decrease lift

Experimental Procedure Wind Tunnel System (Bayless)

Procedure - Calibration Weight Application Diagram (Bayless)

Procedure - Data Adjustment Calibrations are applied to Lift & Drag calculations Baseline Drag & zero initial Lift are taken into consideration

Results

Conclusions An increasing angle of attack causes the Coefficients of Lift & Drag to increase After the stall angle has been reached, the Lift abruptly decreases A higher Re results in a higher velocity and causes a decrease in the Coefficients of Lift & Drag The results observed in a wind tunnel can be used for real world applications

Questions?