Aerodynamics Quiz most lmportant 2

What is the stagnation point?

• Point of max lift

• Point where airflow speed is zero

• Point of max drag

Which of the following is a type of parasite drag?

• Lift drag

• Skin friction drag

• Induced drag

What is the purpose of a polar diagram?

• Show temperature gradient

• Plot lift vs angle of attack

• Plot lift coefficient vs drag coefficient

Where does flow separation typically begin during a stall?

• Leading edge

• Trailing edge

• Wingtip

What is meant by “mean aerodynamic chord”?

• Width of the fuselage

• Average chord length of the wing

• Spanwise airflow

What happens to drag with increasing angle of attack beyond optimum?

• Decreases

• Constant

• Increases

What reduces span-wise flow on swept wings?

• Slats

• Wing fences

• Trim tabs

What is the angle between the chord line and relative wind?

• Incidence

• Sweep angle

• Angle of attack

What is the result of contaminated wings (ice/frost)?

• Lift increases

• Stall angle increases

• Stall occurs at lower angles

What causes interference drag?

• Surface roughness

• Poor streamlining

• Flow collision at junctions