CDRILS Flight Demonstration Unit: 2025 Update

Honeywell Aerospace Technologies is currently developing and fabricating a Carbon Dioxide Removal by Ionic Liquid System (CDRILS) for a 3-year flight demonstration. CDRILS utilizes a continuously recirculated ionic liquid sorbent and hollow fiber membrane contactors for carbon dioxide removal from air. The CDRILS flight demonstration unit (FDU) design incorporates an integrated Sabatier reactor which saves overall system power and recovers water which can then be returned to the Oxygen Generation Assembly (OGA). The cost benefits of an integrated Sabatier reactor are described. Precision Combustion, Inc. (PCI) fabricated, performed a Factory Acceptance Test (FAT), and delivered a Sabatier Reactor Engineering Unit to Honeywell Aerospace Technologies for integration with CDRILS. CDRILS dormancy stability will be quantified by operating breadboard and prototype scale CDRILS test stands after over one year of dormancy. The path for a CDRILS flight demonstration on the ISS is outlined.