Effects and controls

Question 1

Throttle

Answer 1

controls power output

Question 2

Mixture

Answer 2

Red knob - controls fuel to air ratio

Question 3

Carburettor switch

Answer 3

• to right of throttle - to treat carburettor ice - used when power is below 2000 RPM

Question 4

How does the wing create lift

Answer 4

Low pressure system above wing, high pressure system below wing - high pressure moves to low - pushes on the wing - creates a lift.

Question 5

Parasite drag

Answer 5

The resistance of a body moving through fluid. Drag that any object moving through the air experiences, small streamlined shapes produce least parasite drag. The higher the speed, the greater the parasite drag.

Question 6

Form drag

Answer 6

Drag due to shape of object

Question 7

Interference drag

Answer 7

Drag due to mixing of airflow around surfaces connected to each other - increases as attachment angle nears 90

Question 8

Induced drag

Answer 8

Drag that is part of the total reaction - as Angle of attack increases this increases - drag which predominates at low airspeed.

Question 9

What is the relationship between thrust and drag in level flight

Answer 9

Thrust = drag

Question 10

How does the rudder work?

Answer 10

Pressing on the left pedal –> rudder deflects to the left. This deflection creates more lifting force on the right-hand side of the rudder, which moves the plane’s nose to the left. (vice versa for the right pedal)

Question 11

Aileron

Answer 11

When turning right, right aileron deflects down, and left aileron deflects up to roll the aircraft to the right.

Question 12

How is balance measured?

Answer 12

Using the turn coordinator and balance ball - ball represents direction of tail.

Question 13

weathercocking

Answer 13

When the effect of a crosswind causes the nose of the aircraft to swing into the wind.

Question 14

Round out

Answer 14

The manoeuvre intended to arrest the sink rate of the aircraft and achieve level flight and zero thrust.

Question 15

Flare

Answer 15

The manoeuvre following round out, which positions the aircraft with a high nose attitude for landing.

Question 16

Ballooning

Answer 16

Back pressure maintained beyond transition to straight and level, nose pulled up for too long, results in low level, low speed and high nose. Draw.

Question 17

Bouncing

Answer 17

Not enough back pressure to achieve straight and level prior to contact with ground, results in low level, low speed and high nose. Draw.

Question 18

function of flaps

Answer 18

Allow the wing to generate the same lift at a lower AOA

Question 19

Effect of air density on take-off distance

Answer 19

A decrease in air density means less air is available to burn fuel. Engine power decreases. Also the aircraft must be accelerated to a higher TAS to achieve the same IAS. The take-off distance required will increase.

Question 20

How does trim work

Answer 20

When elevator is raised, trim tab is lowered.

Question 21

How will a tail wind component affect take-off

Answer 21

In a tailwind the aircraft must accelerate to a speed equal to the wind speed just to have zero relative airflow. It must then continue to accelerate to normal flying speed. Take-off distance will be increased.