GoKawiilMercurial Dyson: Engineering the Rapid Disassembly of a Planet
Abstract
We present a detailed engineering analysis of the fastest physically plausible disassembly of Mercury into Dyson swarm components, using known physical principles and aggressive extrapolation of present-day materials and manufacturing. Beginning with a 1,000-tonne self-replicating industrial seed, the system grows through approximately 58 doublings. The revised central result is that a purely Mercury-local industrial economy reaches the limit of Mercury's own intercepted sunlight in roughly the low-30s doublings, at about the same stage that surface area and local heat rejection become co-limiting. A multi-year disassembly campaign therefore cannot rely on Mercury-local power alone: it must begin diverting output in the low-to-mid 20s doublings into a sunward collector, orbital manufacturing, and orbital radiator capacity before local saturation is reached.
Waste heat remains a central engineering constraint because every joule used for mining, fabrication, refrigeration, transport, and launch ultimately appears as heat somewhere in the system. On Mercury's surface this strongly limits industrial density, so the thermal problem is managed first by expansion, then by hotter radiators, and finally by shifting the main power-processing and heat-rejection burden off-planet.
The endgame nevertheless remains a mass-driver problem. The mature system relies on a deep reticulated compressive shell scaffold at several Mercury radii to provide ordered launch/capture geometry, transport corridors, and vast radiator area, while high-efficiency electromagnetic mass drivers serve both as launch systems and as thermal transport systems via ballistic coolant transfer. Under this revised framing, Mercury-local growth bootstraps the project, but fast disassembly is completed only after Mercury has become the seed of a much larger heliocentric power-and-logistics machine.
1. The Goal
Mercury (mass 3.3 × 10²³ kg, radius 2,440 km) is the ideal feedstock for a Dyson swarm. It is metal-rich (~70% iron-nickel core), has low surface gravity (3.7 m/s², escape velocity 4.25 km/s), no atmosphere, intense solar flux (9,100 W/m²), an extremely slow rotation (58.6-day sidereal period), and orbits close enough to Venus that volatile imports are cheap. The goal is to convert Mercury into Dyson swarm elements as rapidly as physics and reasonable present-day engineering allow.
The process is exponential: a 1,000-tonne self-replicating industrial seed lands on Mercury and doubles its mass repeatedly by mining regolith, refining metals, and manufacturing copies of its own components. With each doubling, the swarm's mining, manufacturing, and launching capacity doubles. From 1,000 tonnes to 3.3 × 10²³ kg requires approximately 58 doublings.
2. The Mercury-Local Power Ceiling
Before thermal management becomes the dominant visible problem, the Mercury-based industrial system runs into a simpler limit: Mercury can intercept only a finite amount of sunlight. A purely Mercury-local growth strategy therefore cannot continue exponential expansion indefinitely, no matter how well power is distributed across the surface.
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