Some articles on reaction, reaction wheels, wheels:
... mass-expulsion control systems, MEC, or reaction-control systems, RCS ... Another method for achieving three-axis stabilization is to use electrically-powered reaction wheels, also called momentum wheels ... Massive wheels are mounted in three orthogonal axes aboard the spacecraft ...
Famous quotes containing the words wheels and/or reaction:
“Let a man find himself, in distinction from others, on top of two wheels with a chain—at least in a poor country like Russia—and his vanity begins to swell out like his tyres. In America it takes an automobile to produce this effect.”
—Leon Trotsky (1879–1940)
“Children, randomly at first, hit upon something sooner or later that is their mother’s and/or father’s Achilles’ heel, a kind of behavior that especially upsets, offends, irritates or embarrasses them. One parent dislikes name-calling, another teasing...another bathroom jokes. For the parents, this behavior my have ties back to their childhood, many have been something not allowed, forbidden, and when it appears in the child, it causes high-voltage reaction in the parent.”
—Ellen Galinsky (20th century)