Mars Project Documentation

Small subject documents, linked across domains. Navigation is a project map rather than an ownership hierarchy.

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Project map

Subjects may appear in more than one location while retaining one stable identity and one set of documentation.

Mars Surface
Settlements & Habitats
Colony Habitat Complexreviewed — no conflicting external dimension
  • Approximately 12 tubes per 100-person settlement: ~10 general/non-greenhouse + 2 greenhouse.
  • Current common tube: ~20 m wide x ~50 m long x ~8 m high; arched geometry supports only a partial central second level.
  • Two rigid connector/access-block sizes provide pressure isolation, circulation and expansion nodes.
Habitat Tubes & Connector/Access Blocks
  • ~20 m wide x ~50 m long x ~8 m high arched pressure tubes; second occupied level is limited to the central high-clearance portion.
  • Small ~2.5 x 2.5 m and large ~3.5 x 3.0 m clear-opening four-way connector/access blocks.
Agricultural Habitat
  • Approximately two agricultural tubes per 100-person colony in the later baseline.
Life Support and Waste Processing
  • Atmosphere, water, wastewater, waste and nutrient-recovery systems.

No subject document published yet.

Medical and Emergency Systems
  • Medical facility, stabilization, isolation, stocks and rescue capability.

No subject document published yet.

Transportation & Mobility
Mars Shuttle / Surface-to-Orbit Transportationreviewed — existing MLC dependency retained
Standard Utility Rover
  • Approximately 250 kg six-wheel electric base rover with six 2 kW continuous direct-drive wheel stations.
  • Approximately 1 m-diameter wheel direction; 15–20 km/h useful speed on suitable terrain.
Rover Material-Handling Package
  • Forklift attachment, ballast and optional manipulator/crane.

No subject document published yet.

Rover Interchangeable Mission Packages
  • Survey, drilling, cable, construction, recovery and rescue packages.
Rover Trailer System
  • Common modular trailer for batteries, solar arrays, cargo, samples and mission equipment.
Long-Range Sample Courier
  • Utility rover plus battery trailer and sample-return package.

No subject document published yet.

Pressurized Expedition Rover
  • Four-person class pressurized exploration and emergency vehicle.

No subject document published yet.

Logistics & Material Handling
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Surface Logistics Systemreviewed — current MLC standard referenced
  • Standard MLC -> MCI -> 2 t pallet handling hierarchy for surface and indoor logistics.
  • ~50 t gross/~40 t useful cargo standard MLC planning model; 100 t carrier connection retained separately.
Rover Material-Handling Package
  • Forklift attachment, ballast and optional manipulator/crane.

No subject document published yet.

Rover Trailer System
  • Common modular trailer for batteries, solar arrays, cargo, samples and mission equipment.
Construction
Dedicated Scraper
Loader
  • Dedicated stockpile, trailer-loading and construction-material handling machine.
Excavator / Backhoe
Construction Attachments
  • Grading, compaction, ripping, forks, grapples, drilling and recovery attachments.
Habitat Construction System
Habitat Burial Conveyor
  • Tracked slow-creeping stacking-conveyor derivative places shielding without driving over habitat crowns.
  • ~18 m-class boom and ~15–20 t local-regolith ballast are concept starting points.
Standard Motor & Drive Family
  • Continuous-duty 0.5, reserved 1, 2 and 5 kW motor/inverter classes; 10 kW+ remains open.
  • Direct-drive inverter-fed traction preferred where practical; hydraulics allowed for implements.
Power & Utilities
Surface Power System
Common 1.25 MWe Reactor/Generator Module
  • Common approximately 1.25 MWe nuclear reactor/generator module shared by Mars surface power and electric-transport architectures.
  • Common core architecture is separated from installation-specific spacecraft and surface packaging.
Colony Electrical Distribution
  • DC-native hierarchy: ~10 kV, ~500 V, ~192 V, ~96 V and ~48 V classes.
  • Solid-state conversion near loads; medium-voltage equipment restricted from occupied areas.
Standard Battery Module
  • ~48 V field-replaceable module with standardized physical/electrical/mechanical interfaces.
  • Chemistry and final kWh remain open; series modules create ~96/~192 V classes.
Resources & Propellant
Water and Propellant Production
  • Shared Mars ISRU chain for water extraction/purification, electrolysis, oxygen supply and LOX/CH4 production.
  • Colony water and breathing/process oxygen are parallel products of infrastructure sized primarily for propellant production.
Ammonia Production / Transport Refueling
  • Preliminary Mars NH3 production uses atmospheric nitrogen plus hydrogen from water electrolysis for transport refueling.
  • Current production figures remain study values rather than frozen requirements.
Agriculture & Life Support
Agricultural Habitat
  • Approximately two agricultural tubes per 100-person colony in the later baseline.
Life Support and Waste Processing
  • Atmosphere, water, wastewater, waste and nutrient-recovery systems.

No subject document published yet.

Water and Propellant Production
  • Shared Mars ISRU chain for water extraction/purification, electrolysis, oxygen supply and LOX/CH4 production.
  • Colony water and breathing/process oxygen are parallel products of infrastructure sized primarily for propellant production.
Manufacturing & Industry
Plastics Factory
  • Early polyethylene manufacturing progresses from imported feedstock toward a complete local chain.
  • Current validation case: ~1.25 MWe, ~2,000 t/year, ~15 containers; not yet a final process requirement.
Early Mars Manufacturing Architecture
  • Earth-tested containerized process skids scale by adding modules rather than replacing whole plants.
  • Progression from ISRU and polyethylene toward glass/composites, ceramics, machining and later metals.
Basalt Industry
  • Prospecting and progressive development toward local basalt reinforcement.

No subject document published yet.

Composite Manufacturing
  • Progression toward local basalt/polyethylene composite manufacturing.

No subject document published yet.

General Machine / Manufacturing Shop
  • Machining, welding, additive manufacturing, repair and tooling.

No subject document published yet.

Communications & Computing
Colony Communications and Control
  • Local networks integrated with Mars broadband, PNT and Earth communications.

No subject document published yet.

Mars Position, Navigation and Time
Mars Broadband Network
Surface Data Center
  • Containerized Mars surface compute/storage infrastructure supporting local and orbital data services.
Exploration & Prospecting
Prospecting Architecture
  • Orbital survey narrows regions; surface rovers establish local composition and processability.
Long-Range Sample Courier
  • Utility rover plus battery trailer and sample-return package.

No subject document published yet.

Transportation & Logistics
Cargo Pallets & Indoor Handling
  • 2 t standard pallet-handling case below the MLC/MCI logistics layer.
  • Robotic pallet jack uses two 0.5 kW continuous drive packages.
Mars Orbit
Habitats & Stations
Mars Orbital Habitats & Stations
  • Transport modules and supplies can accumulate into useful Mars orbital infrastructure.

No subject document published yet.

Transportation & Logistics
Mars Shuttle / Surface-to-Orbit Transportationreviewed — existing MLC dependency retained
Orbital Logistics and Servicingupdated / clarified
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Spacecraft
Earth–Mars Communications
  • MITR high-capacity optical Earth–Mars communications architecture.
  • Heliocentric conjunction relay derivative uses common 4-Gbps-capable MITR terminal hardware with 1-Gbps Earth/deep-space and 4-Gbps Relay–Mars requirements.
Mars Broadband Network
Mars Position, Navigation and Time
Global Mapping Spacecraft
Resource Survey Spacecraft
Subsurface Survey Spacecraft
  • Radar, microwave and nuclear-spectroscopy subsurface reconnaissance.
Rapid-Response Optical Observation
Rapid-Response Radar Observation
Mars Orbital Computing / Data System
Additional Orbital Sensing
  • Additional multispectral, thermal, radar, atmospheric, radiation and space-weather sensing.

No subject document published yet.

Reference Spacecraft & Design Studies
Spacecraft Standards & Support
Spacecraft Architecture & Classes
Spacecraft Bus
  • Reusable spacecraft bus standards and resource envelopes.
  • Mission spacecraft consume bus resources rather than redefining common bus hardware.
Deployment & Dispensersupdate required
Propulsion
  • Reusable propulsion modules and propulsion interfaces for standardized spacecraft.
Communications
  • Common spacecraft communications resources and interfaces, including Mars optical networking and standard RF TT&C/backup services.
Power & Energy Storage
  • Common spacecraft generation, distribution and battery-resource standards as they are defined.

No subject document published yet.

Thermal Control
  • Common thermal-rejection architecture, radiator resources and thermal interfaces.

No subject document published yet.

Attitude, Pointing & Navigation
  • Common ADCS resources, spacecraft pointing services and navigation interfaces.

No subject document published yet.

Avionics & Data Interfaces
  • Common spacecraft avionics, compute/storage boundaries and payload data interfaces.

No subject document published yet.

Structural & Payload Interfaces
Ground Support & Geodesy
  • Reusable surface reference, calibration, geodetic and installation support for orbital spacecraft and navigation systems.
Interplanetary
Crew Transportation
Cargo Transportation
Earth–Mars Transportationreviewed — no direct dimensional edit
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Common 1.25 MWe Reactor/Generator Module
  • Common approximately 1.25 MWe nuclear reactor/generator module shared by Mars surface power and electric-transport architectures.
  • Common core architecture is separated from installation-specific spacecraft and surface packaging.
Communications
Earth–Mars Communications
  • MITR high-capacity optical Earth–Mars communications architecture.
  • Heliocentric conjunction relay derivative uses common 4-Gbps-capable MITR terminal hardware with 1-Gbps Earth/deep-space and 4-Gbps Relay–Mars requirements.
Logistics & Support
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Orbital Logistics and Servicingupdated / clarified
Ammonia Production / Transport Refueling
  • Preliminary Mars NH3 production uses atmospheric nitrogen plus hydrogen from water electrolysis for transport refueling.
  • Current production figures remain study values rather than frozen requirements.
Earth & Earth Orbit
Launch & Delivery
Earth-Orbit Mars Departure Staging
  • Assembly, fueling, cargo marshaling and crew-transfer staging for Mars departures.
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Earth–Mars Transportationreviewed — no direct dimensional edit
Orbital Assembly & Logistics
Orbital Logistics and Servicingupdated / clarified
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Mars Mission Support
Earth–Mars Communications
  • MITR high-capacity optical Earth–Mars communications architecture.
  • Heliocentric conjunction relay derivative uses common 4-Gbps-capable MITR terminal hardware with 1-Gbps Earth/deep-space and 4-Gbps Relay–Mars requirements.
Fleet-Growth Architecture
  • Transport fleet must grow while supporting existing-colony expansion and new-colony establishment.
Initial Deployment Scale
  • Earlier integrated estimate: 250–300 standard container equivalents for the first serious settlement.

No subject document published yet.

Common Systems & Standards
Cargo & Container Standards
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Cargo Pallets & Indoor Handling
  • 2 t standard pallet-handling case below the MLC/MCI logistics layer.
  • Robotic pallet jack uses two 0.5 kW continuous drive packages.
Mechanical Interfaces
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Habitat Tubes & Connector/Access Blocks
  • ~20 m wide x ~50 m long x ~8 m high arched pressure tubes; second occupied level is limited to the central high-clearance portion.
  • Small ~2.5 x 2.5 m and large ~3.5 x 3.0 m clear-opening four-way connector/access blocks.
Orbital Logistics and Servicingupdated / clarified
Power & Electrical Interfaces
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Surface Power System
Colony Electrical Distribution
  • DC-native hierarchy: ~10 kV, ~500 V, ~192 V, ~96 V and ~48 V classes.
  • Solid-state conversion near loads; medium-voltage equipment restricted from occupied areas.
Standard Battery Module
  • ~48 V field-replaceable module with standardized physical/electrical/mechanical interfaces.
  • Chemistry and final kWh remain open; series modules create ~96/~192 V classes.
Standard Motor & Drive Family
  • Continuous-duty 0.5, reserved 1, 2 and 5 kW motor/inverter classes; 10 kW+ remains open.
  • Direct-drive inverter-fed traction preferred where practical; hydraulics allowed for implements.
Common 1.25 MWe Reactor/Generator Module
  • Common approximately 1.25 MWe nuclear reactor/generator module shared by Mars surface power and electric-transport architectures.
  • Common core architecture is separated from installation-specific spacecraft and surface packaging.
Data & Communications Interfaces
Standard Intermodal Cargo System
  • 5.0 m protected internal modular envelope for a generic freight MLC.
  • Working external structural/interface pitch: 5.4 m.
  • Four 1.25 m MCI pitches span the protected 5.0 m internal envelope.
  • MLC-compatible structures may span integer multiples of the structural pitch, subject to carrier geometry and structural certification.
Common Optical Communications Terminal
Colony Communications and Control
  • Local networks integrated with Mars broadband, PNT and Earth communications.

No subject document published yet.

Mobility Interfaces
Standard Utility Rover
  • Approximately 250 kg six-wheel electric base rover with six 2 kW continuous direct-drive wheel stations.
  • Approximately 1 m-diameter wheel direction; 15–20 km/h useful speed on suitable terrain.
Rover Trailer System
  • Common modular trailer for batteries, solar arrays, cargo, samples and mission equipment.
Rover Interchangeable Mission Packages
  • Survey, drilling, cable, construction, recovery and rescue packages.
Standard Motor & Drive Family
  • Continuous-duty 0.5, reserved 1, 2 and 5 kW motor/inverter classes; 10 kW+ remains open.
  • Direct-drive inverter-fed traction preferred where practical; hydraulics allowed for implements.
Spacecraft Standards & Support
Spacecraft Architecture & Classes
Spacecraft Bus
  • Reusable spacecraft bus standards and resource envelopes.
  • Mission spacecraft consume bus resources rather than redefining common bus hardware.
Deployment & Dispensersupdate required
Propulsion
  • Reusable propulsion modules and propulsion interfaces for standardized spacecraft.
Communications
  • Common spacecraft communications resources and interfaces, including Mars optical networking and standard RF TT&C/backup services.
Power & Energy Storage
  • Common spacecraft generation, distribution and battery-resource standards as they are defined.

No subject document published yet.

Thermal Control
  • Common thermal-rejection architecture, radiator resources and thermal interfaces.

No subject document published yet.

Attitude, Pointing & Navigation
  • Common ADCS resources, spacecraft pointing services and navigation interfaces.

No subject document published yet.

Avionics & Data Interfaces
  • Common spacecraft avionics, compute/storage boundaries and payload data interfaces.

No subject document published yet.

Structural & Payload Interfaces
Coordinate, Navigation & Time Standards
Documentation Operations
Documentation Operationsupdated / continuity and audit records
  • Deployment procedure, permanent audit definitions, change propagation and release acceptance controls for Mars documentation.

Change propagation

Open propagation work remains visible until affected designs are reviewed or reconciled.

MLC-CHG-001 — Protect 5.0 m internal MLC envelope and use ~5.4 m structural/interface pitch

accepted / propagation open

The MLC dimensional basis changed from the earlier 5 m external-cube interpretation to a 5.0 m protected internal envelope with approximately 5.4 m external structural/interface pitch. Downstream designs must be reviewed against the additional available envelope rather than merely relabeled.

SubjectStatus
Standard Intermodal Cargo Systemupdated
Earth–Mars Transportationreviewed — no direct dimensional edit
Mars Shuttle / Surface-to-Orbit Transportationreviewed — existing MLC dependency retained
Orbital Logistics and Servicingupdated / clarified
Spacecraft Architecture & Classesupdated
Surface Logistics Systemreviewed — current MLC standard referenced
Colony Habitat Complexreviewed — no conflicting external dimension
Deployment & Dispensersupdate required

Affected documents

DocumentStatus
Small Satellite Dispenserupdate required — design still uses approximately 4.6 m rack planning dimensions and should be re-optimized against the current 5.0 m protected internal envelope
Surface Data Center — SDC-C1review required — contains a 5 x 5 x 5 m enclosure requirement that must be reconciled with the protected-internal-envelope standard
Orbital Compute Network — OCNreview required — historical cube language is identified but downstream SDC-C1 dimensional wording still needs reconciliation
Mars Orbital Infrastructure Handoffreview required — historical source language is identified but should be reconciled when the handoff is next refreshed
Regular R10 Integrated Spacecraftreconciled — legacy cube shorthand is explicitly mapped to the current protected internal envelope
Regular R5 Reference Spacecraftreconciled — legacy cube shorthand is explicitly mapped to the current protected internal envelope
Regular R5/R10/R20 Heavy Deployment Cradlereconciled — legacy cube shorthand is explicitly mapped to the current protected internal envelope; future optimization remains an engineering trade
Mars Satellite System Architecturereconciled — current structural/interface pitch and protected internal envelope are stated
Mars Logistics Container — MLC and Modular Cargo Interface — MCIreconciled — historical cube wording is explicitly identified as predecessor terminology

SAT-CHG-001 — Propagate 5 October R2 / MITR / conjunction-relay architecture update

accepted / propagated; engineering closure open

Propagates current R2 geometry and resource maxima, spacecraft battery modularization, nominal propulsion sizing and Hall trade state; replaces standard five-terminal MITR with four terminals; creates the heliocentric conjunction-relay derivative; and updates MONT working/derived values without promoting open trades to requirements.

SubjectStatus
Spacecraft Architecture & Classesupdated
Earth–Mars Communicationsupdated
Common Optical Communications Terminalupdated
Documentation Operationsreviewed / continuity and audit records updated

Affected documents

DocumentStatus
Mars Satellite System Architectureupdated — R2 resource/geometry and MITR/relay lineage propagated
Regular R2 Spacecraft Busupdated — geometry, 40 kW/40 kWh maxima, 1 kWh modules, 5 t sizing payload, ~100 m/s mobility and Hall trade state
Mars Interplanetary Trunk Relay — MITRupdated — four 1.25 m terminals, no dedicated spare, coarse/fine pointing and derivative relay boundary
Heliocentric Conjunction Relay — Conceptcreated — four Earth-facing plus one independently pointable Mars-facing MITR-class terminal derivative
Mars Optical Network Terminal — MONTupdated — 10 cm / 10 W / 100-Gbps-class working point; long-range figures remain derived estimates
Mars Architecture Decision Registerupdated — accepted decisions and qualifications recorded
Open Ideas — Concept Incubatorupdated — remaining R2 propulsion/interface, MITR and relay closure retained as open
Source Conversation Registerupdated — consolidated 5 October handoff added as later source evidence
Documentation System Audit Registerupdated — SAT-CHG-001 semantic consistency check added
Mars Orbital Infrastructure Handoffupdated — stale five-terminal MITR summary corrected; historical handoff framing retained

SAT-CHG-002 — Formalize MITR / heliocentric-relay derivative link and inheritance requirements

accepted / propagated; engineering closure open

Formal derivative evaluation establishes common 4-Gbps-capable MITR terminal hardware, retains 1 Gbps per Earth/deep-space terminal, requires 4 Gbps on Relay–Mars, requires simultaneous Earth/Mars operation, records the common-hardware economic review trigger, and propagates R2 packaging/thermal/plume/CG plus external heliocentric-delivery dependencies.

SubjectStatus
Spacecraft Architecture & Classesupdated
Earth–Mars Communicationsupdated
Documentation Operationsupdated / continuity and audit records

Affected documents

DocumentStatus
Regular R2 Spacecraft Busupdated — derivative feedback and plume/CG interface consequence recorded
Mars Interplanetary Trunk Relay — MITRupdated — common 4-Gbps hardware, 1-Gbps Earth requirement and economic review trigger
Heliocentric Conjunction Relay — Conceptupdated — formal derivative disposition, 4-Gbps Mars link, simultaneous operation and delivery dependency
Mars Satellite System Architectureupdated — common hardware and link-rate split propagated
Mars Architecture Decision Registerupdated — ADR-026/027
Open Ideas — Concept Incubatorupdated — remaining link, thermal, articulation and delivery closure
Source Conversation Registerupdated — formal derivative handoff added as later authority
Documentation System Audit Registerupdated — SAT-CHG-002 semantic consistency audit added
Mars Orbital Infrastructure Handoffupdated — current MITR summary refreshed while historical handoff framing retained

SAT-CHG-003 — Consolidate formal R2 / MITR / heliocentric-relay derivative disposition and non-regression

accepted / propagated; engineering closure open

Expands the formal item-by-item R2→Relay and MITR→Relay disposition, separates KIP maturity metadata from performance requirements, preserves Relay-triggered parent-feedback chronology, and adds explicit non-regression controls for spare semantics, link capability versus requirement, R2 resource ceilings, review-trigger threshold and heliocentric insertion.

SubjectStatus
Spacecraft Architecture & Classesupdated
Earth–Mars Communicationsupdated
Documentation Operationsupdated / continuity and audit records

Affected documents

DocumentStatus
Regular R2 Spacecraft Busupdated — full Relay inheritance/review disposition and parent-feedback chronology
Mars Interplanetary Trunk Relay — MITRupdated — formal MITR→Relay disposition and common-hardware ownership/non-regression
Heliocentric Conjunction Relay — Conceptupdated — KIP metadata boundary, R2 inheritance review and non-regression constraints
Mars Satellite System Architectureupdated — inheritance and derivative-to-parent feedback relationship semantics
Mars Architecture Decision Registerupdated — ADR-028 feedback chronology and ownership
Open Ideas — Concept Incubatorupdated — production-economics review trigger and complete inherited dependency set
Source Conversation Registerupdated — consolidated update handoff added as later specified authority
Documentation System Audit Registerupdated — SAT-CHG-003 semantic non-regression audit added

SAT-CHG-004 — Correct R2/MITR parent-source and Relay derivative document ownership

accepted / propagated

Moves Relay-specific MITR inheritance/specialization disposition from the MITR parent document into the Heliocentric Conjunction Relay derivative document and makes R2 + MITR parent/source ownership explicit.

SubjectStatus
Spacecraft Architecture & Classesupdated
Earth–Mars Communicationsupdated
Documentation Operationsupdated / continuity and audit records

Affected documents

DocumentStatus
Mars Interplanetary Trunk Relay — MITRupdated — parent/source boundary only; Relay-specific disposition removed
Heliocentric Conjunction Relay — Conceptupdated — owns MITR inheritance/specialization disposition and explicit R2 + MITR derivation
Documentation System Audit Registerupdated — SAT-CHG-004 ownership regression audit added

Relationship integrity

Relationship graph: 104 declared relationships; no broken document targets detected.