1 - King - Aerodynamic Principles

Question 1

<p>Forces on an Aircraft</p>

Answer 1

<p>Thrust, Drag, Lift and Weight</p>

Question 2

<p>Unaccelerated flight definition</p>

Answer 2

<p>No change in speed or direction</p>

Question 3

<p>Straight and Level Flight</p>

Answer 3

<p>Thrust = drag
Lift = Weight</p>

Question 4

<p>Bernoilli Law</p>

Answer 4

<p>Air traveling faster over the curved upper surface of causes lower pressure on the top surface.
Top of wing - Lower pressure
Below the wing - Relatively high pressure</p>

Question 5

<p>Cord line</p>

Answer 5

<p>The center line between front of wing and trailing edge of wing.</p>

Question 6

Relative Wind

Answer 6

Wind direction against the wing

Question 7

Acute Angle or Angle of Attack

Answer 7

Angle between Chord line and Relative Wind

Question 8

Critical Angle of Attack

Answer 8

above a wing’s critical angle of attack, the flow of air separates from the upper wing surface and backfills, burbles and eddies, which reduces lift and increases drag. This condition is a stall

Question 9

What condition must exist to spin an Airplane

Answer 9

It must be stalled.

Question 10

In a stall are both wings stalled or just one?

Answer 10

Both are stalled, but one wing is stalled more then the other.

Question 11

Does frost need to be removed?

Answer 11

Yes, frost Disrupts the smooth airflow over wind and decreases its lifting capability.

Question 12

Frost on wings

Answer 12

May prevent the airplane from becoming airborne at normal takeoff speed.

Question 13

What makes an airplane turn?

Answer 13

Horizontal component of lift caused by alerions

Question 14

What is adverse yaw?

Answer 14

Caused by extend the alerions, one wing increases drag and decrease lift and moves back, while the other wing has the opposite effect.

Question 15

What forces makes an airplane turn?

Answer 15

The horizonal component of lift, caused by the alerions.

Question 16

The amount of excess load that can be imposed on the wing of an airplane depends upon the?

Answer 16

Speed of the airplane

Question 17

What basic flight maneuver increases the load factor on a airplane as compared to straight and level flight?

Answer 17

Turns

Question 18

During in approach to a stall in increase load vector will cause the airplane to?

Answer 18

Stall at a higher speed

Question 19

In what flight condition is torque affect the greatest in a single engine airplane?

Answer 19

Low speed, high power, high angle of attack

Question 20

The left turning tendency of an airplane caused by P factor is the result of the

Answer 20

Propeller blade descending on the right produces more thrust than the ascending blade on the left

Question 21

When does P factor cause the airplane to ya to the left

Answer 21

when at high angle of attack

Question 22

The angle of attack for a propeller is defined as

Answer 22

the angle of between the propeller cord line in the relative wind