WorksheetsLift
Total questions: 7
Worksheet time: 3mins
[Multiple correct answers] A ping pong ball is rotating in a clockwise direction while translating from right to left. Choose the correct statements.
The velocity is reinforced on the top of the ball and reduced at the bottom side.
The velocity is reinforced on the bottom side of the ball and reduced at the top.
The stagnation points move towards the bottom of the ball.
The stagnation points move towards the top of the ball.
The lift due to the rotation of a body is known as the (a) effect?
Which of the following statements correctly describes the lift coefficient equation shown?
The equation is true for airfoil with finite length and large angle of attack.
The equation is true for airfoil with finite length and small angle of attack.
The equation is true for airfoil with infinite length and small angle of attack.
The equation is true for airfoil with infinite length and large angle of attack.
Planform area of the wing equals to the
Wing span × chord length
Wing span × wing thickness
Chord length × wing thickness
Cross-sectional area of the wing
What does airfoil stall mean?
The airfoil experiences a sudden increase in acceleration
The airfoil experiences a sudden decrease in acceleration
The airfoil experiences a sudden increase in lift
The airfoil experiences a sudden loss of lift
The following statements are correct except
Wing tip vortices increases the effective angle.
Wing tip vortices creates a downwash.
Wing tip vortices leads to an induced drag.
Wing tip vortices results in a smaller effective lift.
Based on the figure shown, which type of wing design is preferable?
Smaller wing span, larger chord length
Smaller wing span, smaller chord length
Larger wing span, smaller chord length
Larger wing span, larger chord length
