Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Flaps |
High lift devices Increase wing camber Can also increase wing area (fowler) Increase drag Induced drag 10-20 to/climb 30-40 landing |
|
|
Cessna 172 flaps |
Single slotted fowler |
|
|
Types of flaps |
Plain Split Slotted Zap Fowler Nose Leading edge-drooped/kreuger |
|
|
Slots |
Fixed on leading edge Air flows through at high angles. Prevents stall, maintains aileron effectiveness |
|
|
Slats |
Movable leading edges Like unfixed slots Allows high angles of attack without stall Usually on large aircraft |
|
|
Washout |
Better Tips angle is less steep than root. Root stalls first |
|
|
Wash in |
Tip is steeper than root Tip stalls first |
|
|
Stall strips |
At root Destroys airflow so root stalls first |
|
|
Wing fences |
Prevents turbulent stall induced air from moving from root to tip |
|
|
Vortex generators |
Prevent airflow separation in the boundary layer Short Low In pairs |
|
|
Controllable pitch propellor |
Pilot can adjust pitch Fine for takeoff Fully course for cruise |
|
|
Propellor pitch |
Distance in ft a prop travells forward in 1 revolution |
|
|
Constant speed propellor |
Blade angle auto changes to maintain set rpm |
|
|
Forces on a propellor |
Bending -thrust -torque Twisting -aerodynamic -centrifugal Centrifugal |
