Airlock Doors

These airlock doors work under high pressure and under high vacuum pressure. There are outer locks on both sides of the doors, and there is an inner lock with a vacuum seal, providing three layers of airlocks on each set of doors. The doors are engineered to be large enough to hold a spacecraft taller than a skyscraper, wider than a football field. The doors work with a very complex system of mechanical arms and pneumatic pistons inside each door, that allow the doors to be opened and closed very quickly because the mechanical components are inside the doors. A vertical actuator determines the leverage of the pneumatic pistons, and there is a separate system for the door locks. The door locks work in all parts of the doors, in all four sides of each door. The locks secure the doors to the structure in all directions, inside and outside, in addition to airlocks inside the structure that connect with the same levels of airlocks within the doors, while the airlocks in the doors are secondary to the structural airlocks. The structural airlocks pass through the doors and secure the entire structure including the airlock doors, with multiple levels of airlocks in the structure, This ensures that the structure is secured from leaks of air at multiple levels, so no one failure of airlocks in any system would result in any loss of air from the structure.