Aerodynamics Quiz most lmportent

What is the SI unit of pressure?

• Newton

• Pascal

• Joule

What is the relationship between velocity and pressure in Bernoulli’s principle?

• As velocity increases, pressure increases

• As velocity increases, pressure decreases

• As velocity decreases, pressure decreases

What causes lift on a wing according to Bernoulli’s principle?

• Higher pressure on upper surface

• Lower pressure on upper surface

• Equal pressure on both surfaces

What is the formula for dynamic pressure?

• ρ × g × h

• ½ × ρ × V²

• m × V

Which layer of the atmosphere contains most weather phenomena?

• Stratosphere

• Troposphere

• Mesosphere

What is the standard pressure at sea level in ISA?

• 1013.25 hPa

• 1000 Pa

• 980 mb

What is the temperature lapse rate in the troposphere under ISA?

• 2°C/km

• 6.5°C/km

• 10°C/km

What is the main factor that reduces lift in high-speed flight?

• Air density

• Drag

• Compressibility effects

Which part of the wing stalls first in a properly designed wing?

• Wing tip

• Wing root

• Trailing edge

What does “angle of attack” mean?

• Angle between horizon and aircraft nose

• Angle between chord line and longitudinal axis

• Angle between chord line and relative wind