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Airlock Blueprint

This is my version of a lossless airlock that does not require any scripts, only sensors and event controllers.

The Airlock system uses Event blocks (2) and sensors (1 essential, 2 optional) to automatically cycle an airlock from space (no atmosphere) to a pressurized interior without losing any oxygen.

With a few additional blocks, the airlock system can also be toggled to work in atmosphere instead. The airlock system needs to be toggled between “space mode” and “atmosphere Mode” as needed, otherwise the oxygen tank may overfill if using “space mode” in an environment with Atmosphere too much.

1. The tank fill system - regulates the oxygen tank so there is enough capacity left to be able to depressurize the airlock when exiting.
   
   
2. The essential Airlock Blocks - like the doors and interior sensor.
   
   
3. The “Space Mode” specific blocks - used only in space
   
   
4. “Atmosphere Mode” specific blocks - used only in atmosphere
   
   
5. Optional Blocks - not necessary, but nice to have

All blocks are named as they are in the blueprint.


Some kind of Oxygen input (e.g. a generator with Ice, another O2 tank, or a vent set to depressurize in atmosphere) is needed to be able to fill the Airlock’s Oxygen Tank.

1. Tank Fill - Connector x2
   
   
2. Tank Fill - Event Controller
   
   
   • Event: Gas Tank Filled %
     
     • greater than or equal to 50%
       
     • Add Tank Fill - Oxygen Tank
       
   • Actions:
     
     • Slot 1:
       
       • Connector Unlock
         
     • Slot 2:
       
       • Connector Lock
   
   
3. Tank Fill - Oxygen Tank

The two connectors should be facing each other, and act as a way to connect or disconnect the vent and O2 tank for the airlock from the rest of the grid’s conveyor system.

The event controller is set to lock the connectors when the tank is less than 50% full, and unlock them (disconnecting the O2 tank from the oxygen supply) at 50% full.

This means that the airlock has enough empty space in the tank to depressurize the airlock when exiting.


The initial setup for the vent and doors should be:

• Door - Interior → Off and Closed
  
• Door - Exterior → On and Open
  
• Air Vent → Depressurize On

The Airlock blocks, including their actions are:

1. Airlock - Air Vent
   
   
   • Actions:
     
     
     • Slot 1: (pressurized)
       
       
       • Airlock - Door - Interior → Open
         
         
       
       
     • Slot 2: (depressurized)
       
       
       • Airlock - Door - Exterior → Open
         
         
       
       
       
   
   
2. Airlock - Door - Exterior
   
   
3. Airlock - Door - Interior
   
   
4. Airlock - Sensor
   
   
   • Actions: Detect friendly character
     
     
     • Slot 1:
       
       
       • Airlock - Door - Interior → Close
         
       • Airlock - Door - Exterior → Close
         
       • Optional - Light → Off
         
       • Optional - Light Airlock Cycle → On
         
         
       
       
     • Slot 2:
       
       
       • Optional - Light → On
         
       • Optional - Light Airlock Cycle → Off
         
         
       
       
       

When stepping into the airlock, the sensor triggers, cycling the doors and air vent. Optionally, the main light will turn off and the green light will turn on while the airlock is occupied.

1. Airlock Space - Event Controller Airlock Cycle
   
   
   • Event: Door opened
     
     
     • Select both Doors
       
       
     
     
   • Actions:
     
     
     • Slot 1 (Door opens)
       
     • Slot 2 (Door Closed)
       
       
       • Airlock - Door - Interior → Toggle On/Off
         
       • Airlock - Door - Exterior → Toggle On/Off
         
       • Airlock - Air Vent → Depressurize On/Off
         
         
       
       
       

The sensor and Air vent itself deal with opening and closing the appropriate doors, but the event controller is needed to turn the doors On and off, and toggle the air vent to pressurize/depressurize.

1. Airlock Atmo - Event Controller Airlock Cycle
   
   
   • Action: Door Opened
     
     
     • Blocks: Both Airlock Doors
       
     • Slot 1 (Door Opened)
       
     • Slot 2 (Door Closed)
       
       
       • Airlock - Door - Interior → Toggle On/Off
         
       • Airlock - Door - Exterior → Toggle On/Off
         
       • Airlock - Door - Interior → Open/Close
         
       • Airlock - Door - Exterior → Open/Close
         
         
       
       
       
   
   
2. O2 Input - Air Vent → an optional way to refill any oxygen lost in low atmosphere environments (like the Alien planet)

When in “Atmospheric Mode”, the air vent is turned off, so this event controller takes over opening and closing the doors.

1. Optional - Timer Block Toggle Mode
   
   
   • Actions:
     
     
     • Airlock Atmo - Event Controller Airlock Cycle → On/Off
       
     • Airlock Space - Event Controller Airlock Cycle → On/Off
       
     • Airlock - Air Vent → On/Off
       
       
   
   
2. Optional - Light
   
   
3. Optional - Light Airlock Cycle
   
   
4. Optional - Button Terminal

The timer block will swap between “Space Mode” and “Atmosphere Mode” settings but toggling on/off the event controllers and timer blocks. While the “Space” event controller and the vent are on, the “Atmosphere” event controller should be off.