Student Pilot Basic Aerodynamics Flashcards

Why does load factor increase during a level banked turn?

Answer: Because the wings must support the aircraft's weight plus centrifugal force

In a banked turn, the wings must produce enough lift to support both the aircraft's weight and provide the centripetal force for the turn, increasing load factor.

What effect does high-density altitude have on aircraft performance?

Answer: Reduces air density, which decreases engine power and lift

High-density altitude means thinner air, which reduces both engine power output and wing lift, degrading overall aircraft performance.

What is the purpose of flaps during approach and landing?

Answer: To increase drag and allow a steeper descent at lower airspeed

Flaps increase both lift and drag, allowing the aircraft to maintain a steeper descent path at a slower, safer landing airspeed.

In a 60° banked level turn, the load factor is approximately:

Answer: 2.0 G

At 60° of bank in a level turn, the load factor is 2.0 G because the wings must produce twice the normal lift to maintain altitude.

What is 'skin friction drag'?

Answer: Resistance caused by air molecules rubbing against the aircraft's surface

Skin friction drag is caused by the viscosity of air creating frictional resistance as it flows along the aircraft's surface.

Which statement correctly describes the relationship between airspeed and parasite drag?

Answer: Parasite drag increases as airspeed increases

Parasite drag increases with the square of airspeed — doubling your speed increases parasite drag by a factor of four.

What is the significance of the L/D max (best lift-to-drag ratio) speed?

Answer: It is the speed at which the aircraft achieves maximum range glide and best glide ratio

L/D max speed gives the best glide ratio, allowing the aircraft to cover the most horizontal distance for each unit of altitude lost in a glide.