Hey everyone, Having a little trouble with something a little out of my element. I've been tasked to design a pneumatic system to open a ~500lb hatch. I think I'm leaning towards a pneumatic cylinder to act on a bell crank. I need the hatch to open to 110 degrees from zero in about 10 seconds. Where I'm getting stuck is on the force necessary to perform this action so I can size my cylinder and then the rest of the system. Any help would be greatly appreciated.