Block 1: Aerodynamics

Question 1

What is Newton’s 2nd law?

Answer 1

Force = mass x acceleration

Question 2

What is a wing midline (aka camber line)

Answer 2

Leading edge to trailing edge, curved because it is right in the middle of the wing

Question 3

When will symmetrical wing generate lift?

Answer 3

When there is an angle of attack

Question 4

What is a cambered airfoil?

Answer 4

Exists when there is a difference between the chord line and the midline

Question 5

How is it possible for a cambered airfoil to generate no lift?

Answer 5

Negative angle of attack

Question 6

What happens to the center of pressure when angle of attack is increased?

Answer 6

Moves forward

Question 7

What happens to the center of pressure when angle of attack is decreased?

Answer 7

Moves aft

Question 8

3 types of parasite drag

Answer 8

1. Form drag
2. Interference drag
3. Skin friction drag

Question 9

Power curve: The speed at which the maximum power available and power required to maintain your airspeed are the farther apart is know as the ______ _______ speed.

Answer 9

Best endurance speed

Question 10

2 causes of ground effect

Answer 10

1. Ground limits induced drag

2. Downwash behind the wing (3rd law)

Question 11

Which type of stability controls pitch, and about which axis?

Answer 11

Lateral stability, about the longitudinal axis

Question 12

Which type of stability controls roll, and about which axis?

Answer 12

Longitudinal stability, about the lateral axis

Question 13

4 factors that affect stall speed

Answer 13

1. Weight
2. Air density
3. Maximum lift coefficient
4. Load factor

Question 14

How do you maximize endurance

Answer 14

Minimize fuel flow

Question 15

How do you maximize range

Answer 15

Get the maximum distance per pound of fuel burned