4 Earth 2 Mars Holding B.V.

CATs&DOG® — Do More with Less Through Geometry

CATs&DOG® should not be understood as another origami-shaped habitat, a one-off geometric structure or a competing regolith-processing method. It is a geometry-driven construction-system architecture designed to turn a limited family of repeatable modules into adaptable lunar infrastructure.

Its flat-origami-inspired patterns create structural depth and distribute forces through folded surfaces. This self-supporting geometry is intended to form larger usable and column-free spans without a conventional beam-and-column frame. Instead of relying primarily on additional mass to achieve strength and stiffness, CATs&DOG® uses geometry to make the material work more efficiently.

The innovation is “multiplicity from minimality”:

• a minimum family of repeatable modules can create structures with different forms, dimensions and functions;
• standardised interfaces connect those modules through one consistent assembly logic;
• structures can begin small and expand in phases without introducing a new construction system;
• individual elements can be inspected, removed, replaced and reused locally;
• complete structures can be disassembled, relocated or reconfigured as mission requirements change;
• the system is designed for both human and robotic assembly and for compatibility with different materials and manufacturing processes.

This is fundamentally different from developing a single optimised form for one mission, manufacturing a large monolithic structure, or treating deployment as a one-time operation. CATs&DOG® considers the full infrastructure lifecycle: manufacture, assembly, operation, expansion, servicing, disassembly and cumulative reuse.

For material-processing partners, CATs&DOG® defines what should be manufactured. For robotics partners, it defines what must be handled, connected, inspected and replaced. For lunar-infrastructure teams, it provides a common architecture through which manufacturing, robotics, structural performance and future applications can be integrated.

Our central hypothesis is that this system logic can deliver more usable infrastructure with fewer module types, less structural material, less process energy, fewer tools and assembly operations, and less dependence on replacement and resupply from Earth. It can also enable wider structural possibilities than conventional beam-and-column construction or one-form geometric concepts.

These advantages are not yet presented as proven performance. Our next step is to quantify them through structural modelling, material and manufacturing studies, robotic assembly development, prototyping and physical testing.

CATs&DOG® contributes the missing system layer between producing construction elements and building scalable, serviceable and evolving lunar infrastructure.