Control surface may refer to:
- Audio control surface
- Flight control surfaces
- Diving plane, a control surface in submarines
- Control surface (fluid dynamics), a surface – enclosing a control volume – through which a fluid flow occurs, causing a possible rate of change of the mean value for the fluid properties (as contained within that control volume)
Famous quotes containing the words control and/or surface:
“He took control of me for forty-five minutes. This time I’ll have control over him for the rest of his life. If he gets out fifteen years from now, I’ll know. I’ll check on him every three months through police computers. If he makes one mistake he’s going down again. I’ll make sure. I’m his worst enemy now.”
—Elizabeth Wilson, U.S. crime victim. As quoted in People magazine, p. 88 (May 31, 1993)
“We say justly that the weak person is flat, for, like all flat substances, he does not stand in the direction of his strength, that is, on his edge, but affords a convenient surface to put upon. He slides all the way through life.... But the brave man is a perfect sphere, which cannot fall on its flat side and is equally strong every way.”
—Henry David Thoreau (1817–1862)