Chapter 2.1A - Exam Review

Question 1

What is the name given to the upwards-acting force produced by the Wings and through which point does this force act (2)?

Answer 1

• Lift.

- Centre of Pressure (CP).

Question 2

For an Aircraft to fly, which opposing force must be counteracted by Lift?

Answer 2

Weight.

Question 3

Weight acts through the centre of what?

Answer 3

Centre of Gravity (CG).

Question 4

What is the name given to the forward-acting force which reacts to the slipstream produced by the Engine/Propeller combination?

Answer 4

Thrust.

Question 5

What is the name given to the retarding force which opposes Thrust?

Answer 5

Drag.

Question 6

The speed and direction of the air past the Wing is called what?

Answer 6

Relative Airflow.

Question 7

Lift acts (perpendicular to/parallel to) the Relative Airflow?

Answer 7

Perpendicular.

Question 8

Drag act parallel to an (in the same direction as/opposite to) the Relative Airflow?

Answer 8

Same direction.

Question 9

What is the name given to a structure that is curved on both sides and when moved through the air, is capable of producing Lift?

Answer 9

Wing/Aerofoil.

Question 10

What is the name given to the angle between the Relative Airflow and the Chord Line of a Wing?

Answer 10

Angle of Attack.

Question 11

At the same Airspeed and without Flaps being deflected, increases in Angle of Attack from 0° up to about 16° will (increase/decrease) the Lift and Drag on a Wing?

Answer 11

Increase.

Question 12

For most Wings, the Angle of Attack for maximum Lift is about 16°. What is this particular Angle of Attack called?

Answer 12

Stalling Angle.

Question 13

With the Angle of Attack constant, will an increase in Airspeed increase or decrease the Lift and Drag on a Wing?

Answer 13

Increase.

Question 14

When Flaps are lowered, the Lift and Drag on a Wing are both (increased/decreased).

Answer 14

Increased.

Question 15

At the same Airspeed and Angle of Attack, up to about 50% of Flap deflection, which force will have increased the most, Lift or Drag?

Answer 15

Lift.

Question 16

An imaginary straight line joining the leading and trailing edges of a Wing is called what?

Answer 16

Chord Line.

Question 17

At the same Airspeed and Angle of Attack, the greater the Camber of a Wing, the (more/less) Lift will be produced?

Answer 17

More.

Question 18

The actual speed of the Aircraft through the air or the speed of the Relative Airflow, is called what?

Answer 18

True Airspeed (TAS).

Question 19

The speed which is a measure of Dynamic Pressure is called what?

Answer 19

Indicated Airspeed (IAS).

Question 20

What is the name given to the indicated Airspeed which has been corrected for both instrument and position (or pressure) error?

Answer 20

Calibrated Airspeed (CAS).

Question 21

At sea level, the IAS is (higher than/lower than/the same as) the TAS?

Answer 21

The same as.

Question 22

At Altitude, the TAS is (higher than/less than/the same as) the IAS?

Answer 22

Higher than.

Question 23

What is the term given of the speed of the Aircraft relative to the ground?

Answer 23

Groundspeed (GS).

Question 24

In a headwind, the Groundspeed is (greater than/less than) the TAS?

Answer 24

Less than.