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What is the purpose of trailing edge?

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in Aerodynamics by (773k points)
What is the purpose of trailing edge?

(a) Airflow rejoins

(b) Airflow separated

(c) Vortex are created

(d) Stalling will created

The question was asked in homework.

Query is from Airfoil Nomenclature topic in chapter Incompressible Flow over Airfoils of Aerodynamics

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Best answer
Right choice is (a) Airflow rejoins

To elaborate: Trailing edge is a part of airfoil. Trailing edge of an aerodynamic surface such as awing is its rear edge. Where the airflow will separate at the leading edge and rejoins at the trailing edge. Ailerons are placed at the trailing edge of the wing and rudder, elevator is placed at the trailing edge of tail.

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