4. Tests
The robot was tested successfully in a laboratory environment. It was shown that the mechanical design could cope with the requirements implied by the mast tip geometry. Especially the motorization of the four vertical cylinders proved to be substantial. With traction on only the two horizontal units, the robot could not traverse the mast tip by itself, due to the obstacle geometry and insufficient friction. Also the rubber coating on the cylinders resulted to be substantial to increase the friction coefficient. Figure 5 shows the robot crossing a mast tip. Figure 6 shows the entire robot together with a human operator for size comparison.