Which of the following is incorrect for a finite wing?

Higher pressure region exists at the top surface

Streamlines on the top surface bend towards the root

Span-wise flow at the bottom surface is towards the tip

Streamlines on the bottom surface bend towards the tip

Correct Answer : Higher pressure region exists at the top surface

Explanation : There is higher pressure region at the bottom and lower pressure at the top. Due to which the flow moves from the wing root at the bottom towards the wing-tips, turns upwards and moves towards the wing root at the top surface. Thus, streamlines on the bottom surface bend towards the tip and vice versa happens at the top surface.

Recently Updated in Aerodynamics Questions

Is loading distribution is represented by the sum of finite number?

True

False

Can Not Say

None of the above

Correct Answer : Option (A) : True

Explanation : In the collocation solution of the basic integral equation, the loading distribution is represented by the sum of a finite number of known functions with unknown coefficient substituting the loading representation into their result.

Is it difficult to predict the analytically overall amount of lift?

True

False

Can Not Say

None of the above

Correct Answer : Option (A) : True

Explanation : It is difficult to predict analytically the overall amount of lift that a wing of given geometry will generate. The lifting line theory yields the lift distribution along the span wise direction based only on the wing geometry and flow conditions.

Is prandtl lifting line theory is a mathematical model that predicts lift distribution over a three-dimensional wing?

True

False

Can Not Say

None of the above

Correct Answer : Option (A) : True

Explanation : The prandtl lifting line theory is a mathematical models that predicts lift distribution over a three dimensional wing based on its geometry. It is also known as the lanchester-prandtl wing theory. It was used to calculate lift on the wing.