Aircrafts designed to fly slowly typically have ____ airfoils, while aircrafts designed to fly fast have ____ airfoils.

The very thin layer of air lying over the surface of the wing is called the ____

Conventional airfoils: generally are the thickest at __ percent of the chord

_________ are vertical surfaces attached to the upper surface of the wing.

____ are moving devices. ____ are built into the wing and do not move

The most common high-lift device found on a wing is the ____.

Speed breaks are also called:

Spoilers are found on ______ types of gliders

Speed brakes allow aircraft to ____ ____ without ____ thrust, and to control approach angles.

What does this photo show?