A GLIDERÂ´S JOURNEY, STEP BY STEP
The scientist decides on the glider's mission and the engineer, who's also the pilot, inputs the data into its operating system: route, deepest dive, how often it will get in touch with the base, what data it will collect and how often, what information to transmit, etc.
LAUNCHING AND NAVIGATING
Once we've put the glider in the water, first it sinks and then it bobs back up. During the entire mission, it keeps on going up and down like this. As it sinks and surfaces, it collects data. A set of alkaline or lithium batteries provide the power it needs to move. It doesn't have propellers or a motor, so it doesn't use up a lot of energy. Okay, so... how does it move along? It does so by using its wings. When the glider goes up and down, it glides in the water. If it has to change course, it uses the rudder attached to its tail.
The glider comes up to the surface, connects its antenna, and sends the data it has collected via satellite. If necessary, it receives new orders. Its GPS helps it find its way, detects whether the currents have set it off course, and points it in the right direction.