Airfoil Nomenclature MCQs – Aerodynamics

By: Prof. Dr. Fazal Rehman | Last updated: May 20, 2025

1. : To decrease the stall speed, which of the following parameters is used?
(A) Chord
(B) Chord line
(C) Camber
(D) Camber line

2. : Chord is a distance between ________?
(A) Leading edge and chord
(B) Chord and chamber
(C) Leading edge and trailing edge
(D) Trailing edge and chord

3. : Which of the following is the NACA 747A315 airfoil thickness?
(A) 15%
(B) 25%
(C) 30%
(D) 7%

4. : NACA 0012 airfoil is claimed to be a symmetric airfoil because of?
(A) No camber
(B) Camber
(C) No wideness
(D) Chord line

5. : The airfoil figure depends on thickness?
(A) True
(B) False
Answer: (A) True

6. : The purpose of the leading edge is to allow the wing to work ______________?
(A) At high position of attack
(B) At low position of attack
(C) At stall condition
(D) In level condition

7. : The purpose of the trailing edge is __________?
(A) Airflow rejoins
(B) Airflow separated
(C) Vortex are created
(D) Stalling will be created

8. : In an airfoil, the purpose of camber is to ____________?
(A) Increase maximum drag
(B) Increase maximum lift
(C) Decrease maximum lift
(D) Decrease maximum drag

9. : Which of the following is the NACA 2412 airfoil thickness?
(A) 12%
(B) 24%
(C) 41%
(D) 2%

10. : The airfoil figure at the leading edge is ________?
(A) Semi-circular
(B) Curve
(C) Straight
(D) Circular

11. : The nomenclature of airfoils was designed by ________?
(A) NACA series
(B) EULER series
(C) EPPLER series
(D) CLARK series