| A | B |
|---|
| Slot | A gap just behind the leading edge to improve flow over the ailerons. |
| Slat | A leading edge movable device that extends forward & down for slow speeds. |
| Plain Flap | A flap with a simple hinge. |
| Slotted Flap | Similar to a plain flap with a slot to delay separation. |
| Fowler Flap | Flap that moves rearward and then down. |
| Split Flap | Adds mostly drag with little lift. |
| Krueger Flap | A leading edge hinged flap. |
| Segmented flap | A flap split into 3 sections with a slot between each section. |
| Aspect Ratio | The relationship of wing length to width |
| Vortex Generators | Small airfoil like surfaces which project vertically into the airstream. |
| Boundary layer | A thin layer of air next to the airfoil |
| Airfoil | Any shape designed to cause a reaction when air passes over it. |
| Planform | Shape of the wing when viewed from above. |
| Camber | The curvature of an airfoil |
| Chord | A straight line from leading edge to trailing edge |
| Spoiler | A panel on the Upper Camber That Destroys Lift |
| Relative Wind | Airflow Parallel to and opposite the flight path |
| Bernoulli's Principle | as the velocity of airflow increases, it's internal pressure decreases. |
| Upwash | deflection of airflow ahead of the wing |
| Downwash | deflection of airflow past the wing |
