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Aetheris Orbis - Erebus 2

Erebus 2 (LR‑RM2) – Extended Refueling Campaign
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Launch Date: 01 Sep 2045 Dock Date: 06 Sep 2045 Return Date: 28 Feb 2046

Mission Purpose - Scale the refueling capability demonstrated in Erebus 1 to full mass cryogenic transfer, while incorporating spare part logistics and software upgrades.

Primary Objectives

  • Conduct comprehensive system diagnostics and apply software updates to the RRS.
  • Integrate spare part kits (Erebus Alpha) and prepare the depot for high energy fuel loads.
  • Execute a staged cryogenic transfer _(small batch test → full‑scale transfer) of methane/oxygen.

Key Milestones

  • T‑0 (01 Sep 2045): Launch of Orion‑XR‑2 (avionics upgrade for longer stay).
  • T + 5 d (06 Sep 2045): Dock at Aetheris Gateway LDDP, immediate hand off of RRS control.
  • T + 6 d – T + 35 d (07 Sep – 30 Sep 2045): Diagnostics, firmware patching, and spare inventory verification.
  • T + 30 d (01 Oct 2045): Erebus Alpha cargo docks (spare mechanical kits, seals, diagnostics).
  • T + 31 d – T + 44 d (02 Oct – 15 Oct 2045): Integration of Alpha spares, component replacements.
  • T + 61 d (01 Nov 2045): Erebus Beta cargo docks (≈2 400 kg liquid methane/oxygen at 150 K).
  • T + 62 d – T + 75 d (02 Nov – 15 Nov 2045): Small‑batch cryogenic transfer (~200 kg) – validate thermal shielding & boil off.
  • T + 76 d – T + 90 d (16 Nov – 30 Nov 2045): Full‑scale transfer (~2 000 kg) – fill ISS long duration tanks, rehearse abort procedures.
  • T + 91 d – T + 151 d (01 Dec 2045 – 31 Jan 2046): Post transfer validation, safety audits, crew training for Artemis‑X depot ops.
  • T + 152 d (01 Feb 2046): Crew prepares for return (payload stowage, health checks).
  • T + 210 d (28 Feb 2046): Crew departs ISS, re‑entry, splashdown – mission concludes.

Rationale & Impact

Erebus 2 transforms a proof‑of‑concept into an operational service. The staged fuel transfers prove thermal stability and pressure control for large cryogenic masses, while the integrated spare‑part workflow demonstrates sustainable depot maintenance. Success directly enables the Artemis‑X lunar‑orbital depot and informs designs for Mars transit refueling.

Erebus Program