Factors affecting lift

Question 1

What are the 5 factors affecting lift

Answer 1

Angle of attack
Aerofoil shape
wing area
air density and viscosity 
Air velocity

Question 2

How does Angle of attack affect lift

Answer 2

An increase in Angle of Attack gives an

increase in Lift

Question 3

How does aerofoil shape affect lift

Answer 3

A High Lift Wing (high Thickness Chord Ratio) is going to speed up the airflow more creating more lift than an aerofoil of high-speed design (low Thickness Chord Ratio)

Question 4

how does wing area affect lift

Answer 4

Lift is directly proportional to the wing area and is measured in square feet.

A wing with a large area will produce more lift than one with small area.

Question 5

how does air density affect lift

Answer 5

Density DECREASES with altitude. When Density is low, Lift will be low

Airspeed must increase as Density decreases to maintain the same Angle of Attack at level flight.

Question 6

How does air velocity affect lift

Answer 6

Lift varies with the square of Velocity

There are two essential conditions for lift:
• Relative Motion
• Pressure Differential.