When an aircraft experiences induced drag
- air flows under the wing spanwise towards the tip and on top of the wing spanwise towards the root.
- air flows under the wing spanwise towards the root and over the top spanwise towards the tip.
- neither of the above since induced drag is not caused by spanwise flow patterns.
Explanation from PART66Online
Induced drag arises because higher pressure beneath the wing leaks outward toward the tip while lower pressure on top draws air inward toward the root. These opposing spanwise flows meet at the trailing edge and roll up into trailing vortices, tilting the lift vector rearward and producing induced drag.
B
bennguli asked · 11 Apr 2017
please someone explain to me.
Community Comments (1)
A
arcana_force
5 Jun 2018
The pressure above the wing is less than atmospheric pressure, and the pressure below the wing is equal or greater than atmospheric pressure. Since fluids always move from high pressure toward low pressure, in addition to the movement of air over the wing from front to rear, there is also a spanwise movement of air from the bottom of the wing outward from the fuselage and upward around the tip. This flow of air results in spillage over the wing tip, mixing with upper airflow causing vortices on wing tips known as induced drag.
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