Working as a continuation of the concept I mentioned in my previous question, my character is building a flying robot, which has wings which function much like those of a bat. The robot in question weights 150 kg, is 2.7 meters tall, has a wingspan of around 16 meters and a wing loading of around 93.75 kg/m^2.
The main issue here is: the robot is not meant to be only capable of flight, it should also be able to move on the ground, which, when you have 8 meter long wings attached to your back region, can be a tricky matter. To mitigate this issue, I planned to make the rods equivalent in position with a bat's ulna and radius bones each capable of collapsing, shrinking to a size slightly longer than 1/3 of their original length, as hopefully represented below:
Given this scenario, is such telescopic wing actually possible without compromising the wing structure altogether? I planned this wing "Skeleton" to be made out of a titanium alloy and control the compression and elongation of the wing via either hydraulic or pneumatic mechanisms, but before I started to question which would be the best method, I started doubting if it was even possible to begin with.