Rocker-bogie

Rocker-bogie is like a special way of putting wheels on a vehicle so it can go over really bumpy terrain without getting stuck or tipping over. Imagine you are playing with your toy car on some rocks or uneven ground. If the wheels on your toy car just went over the rocks like normal it might get stuck or flip over, but if the wheels were positioned a special way it could climb over the rocks and keep going.

That's what rocker-bogie does for real life vehicles like Mars rovers. They have a set of wheels at the front and a set of wheels at the back, and they aren't just straight across from each other like a normal car. Instead, they are spaced out and have a special shape that makes them able to go over rocks and other rough terrain without tipping over.

Plus, the way the wheels move is really interesting too. They are connected with joints that can move up and down and side to side, almost like legs. This helps to keep the vehicle stable and balanced even when driving over really steep or uneven terrain.

So, rocker-bogie basically helps vehicles explore places that normal wheels might get stuck or tip over. It's like super advanced off-roading for robots!