00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| periodic motion consisting of at least one vibratory motion symmetric about an equilibrium region |
| fractional change in body's length due to applied tensile force |
| aileron (ā'lə-rŏn') Pronunciation Key
A hinged surface that is part of the back edge of each wing on an airplane. The ailerons are moved up or down to create uneven lift on the sides of the plane to control its rolling and tilting movements. |
aileron
movable part of an airplane wing that is controlled by the pilot and permits him to roll the aircraft around its longitudinal axis. Ailerons are thus used primarily to bank the aircraft for turning. Ailerons have taken different forms through the years but are usually part of the wing's trailing edge, near the tip. Their efficiency in lateral control made obsolete the Wright brothers' system of wing warping.
Learn more about aileron with a free trial on Britannica.com.