planning

The neighbors of our guesthouse are rebuilding the lot-line wall to make it higher. When A4T rented this guesthouse, it was the only inhabitable building on the block. Still, about one third of the lots are just ruins; but construction proceeds apace on both sides of us here. I took this photo in 2003 on […]

I arrived in Kabul on Weds, May 31, two days after the worst rioting in the city in several years. News of the riot began to emerge several hours after I had begun my journey, so it was disconcerting to be in transit, glimpsing news in airports to find out how bad the situation was.

REMOTELY-OPERATED MACHINERY Originally written: 8 August 2005. Previous | Overview Beyond the earth’s atmosphere, most exterior operations will be done using mechanical remotes. Machines can operate outside without worrying about radiation shielding, pressurized suits, or extreme variations in temperature. The main problem is how to control and guide them for non-routine operations. The simplest solution

MANUFACTURING Originally written: August 3, 2005. Previous | Overview | Next Bulk manufacturing on Luna will need to be done by automated or remote-controlled machines. Humans-in-spacesuits is too costly, as are pressurized, breathable environments. To control for temperature and dust, factories probably should also be enclosed, so again, the geodesic dome design is easiest for

LOCAL RESOURCING: Originally written: 8 August 2005. Previous | Overview | Next A solar oven seems the obvious way to melt and separate Lunar ore. Beyond the initial Earth-built small equipment, Luna-built reflectors seem easy to manufacture, so at least that part of the system can be scaled easily. The separating system might be more

MINING Originally written: 8 August 2005. Previous | Overview | Next Mainly this will include electric-powered, remote-controlled diggers and conveyor trucks or belts. The first target for mining is to grade a level path for the maglev launcher track. This means that the mined material will not be specific; it will be generic Lunar soil,

ENERGY COLLECTION, GENERATION, STORAGE Originally written: 8 August 2005. Previous | Overview | Next Initial: Earth-built photovoltaic panels, batteries, fuel-cell/electrolysis pairs. Secondary: Luna-built photovoltaic arrays, parabolic solar ovens for manufacturing, possibly thermoelectric. Massive, solar-powered?compulsators; alternators capable of delivering massive pulses of electricity. PHOTOVOLTAIC ARRAYS At present the most efficient photovoltaic cells are still p/n-doped monocrystalline

GRAVITY-HABITAT; the ‘GRAVITAT’ Originally written: 8 August 2005. Previous | Overview | Next Luna’s gravity is too low for humans to maintain long-term health. Therefore, like long-term residents of microgravity environments, lunar settlers will need to live in ‘gravitats’ where gravity is simulated by spin (centripetal acceleration). The good news is that the design requirements

Originally written: 3 August 2005. A. From 2006 to permanent, productive lunar base The good news from this spring was NASA’s decision to replace the space shuttle with separate, simple-configuration heavy-lift and crew-lift vehicles, Ares I and Ares V. This should lower both the cost and risk of getting from earth’s surface to low earth