Special forms of flight. I: Balloons, gliders, and hang gliders.

Special forms of flight. I: Balloons, gliders, and hang gliders.

Two hundred years ago the Montgolfier brothers first demonstrated to the world that man-carrying "engines for flying" were possible. Their vehicle, however, did not have "artificiall Wings" but was a balloon filled with hot air. (A Brazilian, Bartolomeu de Gusmao, had flown a small unmanned hot air balloon 74 years earlier.') After successful unmanned demonstrations the first recorded free flig...

Slocum Gliders: Robust and ready

Gliders in Rule 110

The existence of several periodic structures (known as gliders) in the evolution space of the one-dimensional cellular automaton Rule 110, has important lines of investigation in cellular automata theory such as: complex behavior, universal computation and self-reproduction. We investigate the types of gliders, their properties and production through collisions in Rule 110 and their representat...

Routing strategies for underwater gliders

rapidly reach a specified waypoint or to maximize the ability to map a measured field, both in the presence of significant currents. For rapid transit in a frozen velocity field, direct minimization of travel time provides a trajectory ‘‘ray’’ equation. A simpler routing algorithm that requires less information is also discussed. Two approaches are developed to maximize the mapping ability, as ...

Dynamics & Control of Underwater Gliders I: Steady Motions