Aerodynamics of Flight

What are the four forces that act on an airplane during flight?

• Lift, thrust, weight, and drag
• Push, pull, up, and down
• Gravity, friction, momentum, and inertia
• Acceleration, deceleration, ascent, and descent

What principle explains how an airplane's wing generates lift?

• Newton's First Law
• Bernoulli's Principle
• Law of Conservation of Energy
• Einstein's Theory of Relativity

What must be true for an airplane to fly in terms of lift and weight?

• Lift must be less than weight
• Lift must be equal to or greater than weight
• Weight must always be greater than lift
• Lift and weight don't affect flight

What creates thrust in a propeller-driven airplane?

• The wings
• The tail
• The propeller
• The landing gear

What is drag in relation to an airplane?

• A force pulling the plane up
• A force pushing the plane forward
• A force resisting the plane's movement through air
• A force helping the plane turn

What happens if an aircraft is over its maximum gross weight?

• It will fly faster
• It may not be able to take off
• It will use less fuel
• It will climb higher

What is relative wind in aviation?

• Wind blowing from the north
• Wind created by the propeller
• Air moving across the wing during flight
• Wind measured at the airport

What must be true about thrust and drag for an airplane to maintain level flight?

• Thrust must be greater than drag
• Drag must be greater than thrust
• Thrust must be equal to drag
• Thrust and drag are not related

What part of the airplane is shaped like an airfoil to generate lift?

• The fuselage
• The landing gear
• The wing
• The tail

During takeoff, when does the airplane actually lift off the ground?

• As soon as the engines start
• When the plane reaches the end of the runway
• When lift becomes equal to or greater than weight
• When the pilot pulls back on the controls