EPRN-005: Planetary Transport Concepts
Building the Logistics Network for Planetary Exploration
EPRN-005 investigates transportation and logistics systems capable of moving cargo, equipment, resources, and eventually people between Earth, orbital infrastructure, the Moon, Mars, and future planetary settlements.
Exploration becomes sustainable only when transportation evolves into infrastructure. On Earth, global commerce depends upon interconnected trucks, ships, aircraft, rail systems, ports, warehouses, and standardized cargo containers. Future space operations will require a similar logistics network adapted to environments where distance, mass, energy, atmosphere, gravity, and available resources vary dramatically.
EPRN-005 applies the Engineering by Analogy methodology established in EPRN-001 by examining terrestrial freight transportation, containerized shipping, aviation, spacecraft, logistics hubs, fueling infrastructure, and multimodal transportation networks.
The central research question is:
How can transportation systems be designed as an interconnected logistics network capable of moving standardized cargo and people across planetary and interplanetary environments?
A central concept is standardized modular cargo. Rather than designing every payload as an independent spacecraft, equipment and resources could be packaged within reusable or standardized cargo modules designed to interface with multiple transportation vehicles.
A cargo module could potentially move from a terrestrial logistics facility to a launch vehicle, orbital transfer system, planetary lander, surface transport, and final destination while minimizing unnecessary unpacking and repackaging.
This approach treats the cargo as the constant while transportation vehicles change around it.
The long-term objective is to develop a logistics architecture in which transportation becomes repeatable, scalable, and increasingly routine—supporting exploration sites, habitats, energy systems, ISRU facilities, construction operations, and permanent settlements.
A Multimodal Planetary Transportation Network
EPRN-005 organizes planetary transportation around interconnected transportation modes rather than a single vehicle.
1. EARTH-TO-SPACE TRANSPORT
Move standardized cargo modules, equipment, supplies, and personnel from terrestrial logistics networks through launch systems to orbital infrastructure.
2. ORBITAL LOGISTICS
Establish orbital transfer points where cargo can be received, stored, inspected, transferred, refueled, or redirected without requiring every vehicle to travel from Earth directly to its final destination.
3. INTERPLANETARY TRANSPORT
Move cargo and personnel between planetary systems using vehicles optimized for long-duration transportation through space rather than atmospheric launch and landing.
4. PLANETARY ENTRY & LANDING
Transfer payloads from orbital or interplanetary vehicles to systems specifically designed for atmospheric entry, descent, landing, or operation in airless environments.
5. SURFACE & ATMOSPHERIC TRANSPORT
Use ground vehicles, aircraft where atmospheric conditions permit, and specialized cargo-handling equipment to move people and materials between landing zones, habitats, energy facilities, mines, recycling plants, and other infrastructure.
6. RETURN & REUSE
Whenever practical, transportation equipment and cargo modules should be recoverable, refillable, repairable, reconfigurable, or reusable rather than discarded after a single mission.
KEY RESEARCH AREAS
• Standardized modular cargo containers
• Cargo interfaces and automated handling
• Orbital logistics hubs and transfer stations
• Interplanetary cargo transports
• Human transportation systems
• Planetary landing and ascent vehicles
• Lunar and Martian surface transportation
• Martian atmospheric transportation
• Propellant and energy infrastructure
• ISRU-derived fuels and working fluids
• Autonomous navigation and cargo handling
• Vehicle maintenance and repair
• Reusable and replaceable vehicle modules
• Emergency and redundant transportation pathways
Transportation is closely connected to planetary energy and resource infrastructure. Locally produced water, oxygen, hydrogen, fuels, electrical energy, construction materials, and replacement components could progressively reduce the amount of material that must be transported from Earth.
This creates a logistics cycle in which transportation delivers the equipment required to establish infrastructure; infrastructure produces resources required by transportation; and transportation expands the network to additional locations.
As traffic increases, specialized vehicles may become more practical. Launch vehicles can concentrate on reaching space, interplanetary transports on efficient movement between worlds, landers on descent and ascent, atmospheric vehicles on regional flight, and surface vehicles on local distribution.
The long-term vision of EPRN-005 is an interplanetary transportation network where moving cargo between Earth, orbital stations, the Moon, Mars, and future destinations becomes a coordinated logistics operation rather than a series of isolated missions.