Aviation Aerodynamics & Aircraft Performance 3

Question 1

What is load factor (G-force) in aviation?

Accepted Answer

The ratio of lift to aircraft weight, expressed in Gs

Answer

The ratio of engine thrust to aircraft weight

Answer

The weight of cargo divided by maximum takeoff weight

Answer

The structural stress measured at the wing root

Question 2

During a 60-degree banked level turn, approximately what load factor does the aircraft experience?

Accepted Answer

2G

Answer

1G

Answer

1.5G

Answer

3G

Question 3

What is the purpose of Maneuvering Speed (Va)?

Accepted Answer

The maximum speed at which full or abrupt control inputs can be made without exceeding structural limits

Answer

The maximum speed for extending flaps

Answer

The speed at which the aircraft is most fuel-efficient

Answer

The minimum speed for maintaining controlled flight

Question 4

How does a tailwind affect landing distance?

Accepted Answer

It increases landing distance because the aircraft has a higher groundspeed at touchdown

Answer

It decreases landing distance because the aircraft decelerates faster

Answer

It has no effect on landing distance

Answer

It decreases landing distance by reducing lift

Question 5

What effect does high humidity have on aircraft engine performance?

Accepted Answer

It decreases engine power because water vapor displaces oxygen in the air-fuel mixture

Answer

It increases engine power by cooling the intake air

Answer

Humidity has no measurable effect on piston engine performance

Answer

It increases power at high altitudes only

Question 6

What is ground effect, and when does it occur?

Accepted Answer

Increased aerodynamic efficiency due to reduced induced drag when flying within one wingspan of the ground

Answer

Turbulence caused by thermals near the ground; occurs above 1,000 feet AGL

Answer

Reduced lift caused by ground interference; occurs at very low altitudes

Answer

Increased drag from the runway surface during the takeoff roll

Question 7

What is the relationship between airspeed and lift (assuming constant angle of attack and air density)?

Accepted Answer

Lift is proportional to the square of airspeed

Answer

Lift is directly proportional to airspeed

Answer

Lift is inversely proportional to airspeed

Answer

Lift is proportional to the cube root of airspeed