Effects and controls Flashcards
Throttle
controls power output
Mixture
Red knob - controls fuel to air ratio
Carburettor switch
- to right of throttle - to treat carburettor ice - used when power is below 2000 RPM
How does the wing create lift
Low pressure system above wing, high pressure system below wing - high pressure moves to low - pushes on the wing - creates a lift.
Parasite drag
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.
Form drag
Drag due to shape of object
Interference drag
Drag due to mixing of airflow around surfaces connected to each other - increases as attachment angle nears 90
Induced drag
Drag that is part of the total reaction - as Angle of attack increases this increases - drag which predominates at low airspeed.
What is the relationship between thrust and drag in level flight
Thrust = drag
How does the rudder work?
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)
Aileron
When turning right, right aileron deflects down, and left aileron deflects up to roll the aircraft to the right.
How is balance measured?
Using the turn coordinator and balance ball - ball represents direction of tail.
weathercocking
When the effect of a crosswind causes the nose of the aircraft to swing into the wind.
Round out
The manoeuvre intended to arrest the sink rate of the aircraft and achieve level flight and zero thrust.
Flare
The manoeuvre following round out, which positions the aircraft with a high nose attitude for landing.
Ballooning
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.
Bouncing
Not enough back pressure to achieve straight and level prior to contact with ground, results in low level, low speed and high nose. Draw.
function of flaps
Allow the wing to generate the same lift at a lower AOA
Effect of air density on take-off distance
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.
How does trim work
When elevator is raised, trim tab is lowered.
How will a tail wind component affect take-off
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.
