Aero Forces

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W13V2, W14V1

Last updated 1:53 PM on 4/13/26
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10 Terms

1
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Lift definition

Component of aerodynamic force perpendicular to the relative wind.

2
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Drag definition

Component of aerodynamic force parallel to the relative wind.

3
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Streamlines

Direction of flow is tangent to streamlines.

4
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Reducing- streamlines gap

Increasing velocity and reducing pressure.

5
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Increasing streamlines gap

Reducing velocity and increasing pressure.

6
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Pressure coefficient on upper surface of the aerofoil

Large and negative

<p>Large and negative</p>
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Pressure coefficient on lower surface of the aerofoil

Small and positive

<p>Small and positive</p>
8
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Where does lift come from?

Imbalance of pressure distributions over the top and bottom surfaces, as well as N2L (lift is a reaction force). (And circulation but that’s complicated.) Essentially it diverts air down.

9
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Lift against Angle of Attack graph?

knowt flashcard image
10
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Lift and speed?

Lift α velocity2