Aerodynamics

Question 1

Lift

Answer 1

Force to keep you flying, upward force caused by fast air moving over airfoil or wing, opposing force is weight

Question 2

Weight

Answer 2

Force created by gravity, opposes lift

Question 3

Thrust

Answer 3

Speed or forward motion, opposing drag

Question 4

Drag

Answer 4

Force to slow a plane, opposing thrust

Question 5

Straight level unaccelerated flight

Answer 5

When lift=weight and
thrust=drag

Question 6

How many forces act on an aircraft in flight?

Answer 6

4

Question 7

Bernoulli’s principle

Answer 7

On a curved or cambered wing air will travel faster over the wing and slower under creating lift

Question 8

Cord line

Answer 8

Line from leading edge of a wing to the trailing edge

Question 9

Relative wind

Answer 9

As the wing flies through the atmosphere the direction of movement of air

Question 10

Angle of attack is based on?

Answer 10

Relative wind

Question 11

What causes Wing stall?

Answer 11

To great an angle of attack, based on relative wind

Question 12

What does extending flaps do?

Answer 12

Increases wing camber, allowing the aircraft to produce more lift at same angle of attack and to fly slower without stalling

Question 13

Do flaps add drag

Answer 13

Yes which will allow a pilot to make steeper approach to a landing without increasing air speed

Question 14

What happens one wing is more stalled than the other?

Answer 14

The airplane will spin during the stall