Cathode Advancements in Science and Technology for Oxygen Resistance (CASTOR)

long-lived oxygen-compatible cathodes for use in air-breathing very low earth orbit (VLEO) electric propulsion (EP) systems. This DO is issued under the Program Announcement for Disruptioneering, DARPA-PA-25-07. All awards will be made in the form of an Other Transaction (OT) for Prototype project.

The total award value for the combined Phase 1 base (Feasibility Study) and Phase 2 option (Proof of Concept) is limited to $900,000 (see Section I.C for information more information on phase structure). This total award value includes Gove