DGCA Module 08 Aerodynamics, 1st Session of 2022 focused on key principles such as Bernoulli’s theorem, angle of attack, airflow over airfoils, lift and drag forces, and stability. The paper included both conceptual and numerical questions, testing understanding of flight mechanics and basic aerodynamic behavior of aircraft.
Module 08
1st Session of 2022
1. What are the three axes of an aircraft.
A) Vertical, downward, upward
B) Lateral, vertical, longitudinal
C) Pitch, roll, yaw
2. On a warm day, why does aircraft performance decrease.
A) Increase in temperature
B) Decrease in air density
C) Increase in air pressure
3. In a flat plate airfoil, as AOA increases, what happens to the center of pressure (CP).
A) Moves backward
B) Moves forward
C) Remains constant
4. In flat turn, the movement occurs in.
A) Roll
B) Yaw only
C) Pitch
5. Aircraft performance depends on what factors.
A) Temperature, pressure, density
B) Altitude only
C) Temperature only
6. ISA includes.
A) Altitude and wind
B) Temperature, pressure, density, humidity
C) Only temperature
7. What is the ratio of inertia force to elastic force called.
A) Reynolds number
B) Lift coefficient
C) Mach number
8. What is downwash in terms of wing configuration.
A) Increase in incidence from root to tip
B) Decrease in incidence from wing root to tip
C) Increase camber
9. What makes all types of flight possible.
A) Thrust
B) Density
C) Lift
10. Height used in ISA is.
A) Hypothetical
B) Actual
C) True
11. Yaw-only movement occurs in.
A) Climbing turn
B) Flat turn
C) Coordinated turn
12. In a flat plate airfoil, CP shifts where as AOA increases.
A) Forward
B) Fixed
C) Move backwards
13. Purpose of triple-slotted flaps.
A) For high-speed flight
B) To balance lift and drag during takeoff and landing
C) None of the above
14. Lateral stability is achieved by.
A) Roll
B) Yaw
C) Pitch
15. MTCS (longitudinal dihedral) is related to.
A) Longitudinal stability
B) Lateral stability
C) Directional stability
16. What does the aircraft lack. MTCS.
A) Lateral control issue
B) No longitudinal stability
C) No yaw damping
17. What does downwash mean.
A) Wash in
B) Equal incidence
C) Definition of washout
18. Correction of lateral stability happens after which condition.
A) Skid
B) Side slip
C) Yaw
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