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Willlxx
 United Kingdom
Lifepods for land Printer Friendly Version
Given the recent devastation in the USA and before that following the Tsunami, I had the idea that we could make lifepods for use on land. Each unit could be airdropped in their hundreds as a package which would self inflate when operated. A transponder beacon would be set off when the unit is activated. The units would have the ability to be connected together (simply by velcro strips) and designed in a simple cube shape with a brightly coloured sloping roof, the colour would allow identification from a distance when a number of them had been connected the sloping roof would collect rainwater and condensate water for drinking.
Internally the "pods" would contain medical supplies and dried foodstuffs for 2 weeks and laptop style slim batteries which would be powered by solar panels supplied for rigging from the roof and slow release battery as used in wind up radios for additional emergency use. If a small cooker, heater, lamp and radio were included it would give people a chance to keep themselves safe, warm and fed for a number of days before the authorities could fully respond. In addition if survivors knew to head for these brightly coloured shelters aid could be concentrated in these areas.
Reward: a chance to work with someone developing this idea
 

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socratesOne
 USA
3D Printing on large scale with Cob Printer Friendly Version
Cob is a natural building material made of sand (or sand-rich soil), clay (or clay-rich soil), water, and straw. It is traditionally used by mixing the ingredients with your feet, forming it into small oblong balls about 2 liters in volume, and pressing it against other cob balls to form structures such as walls.
3D printing is an additive manufacturing process whereby an object is built one layer at a time, automatically, much like the way a printer prints an image on a page.
My idea is to use existing technology to automate the process of building cob structures.
To do this, the envision a tri-pole, large scale 3D printer consisting of a machine roughly the size of a car (which may or may not be "driven" by an individual or a computer program), and containing a "print head" the size of consumer multi-color laser printer.
The "print head" is a chamber made primarily of two perpendicular metal plates to serve as the guides for each wall (thickness of the walls would be the distance between the plates), a feeder which adds new cob to the chamber, and piston which packs the cob into the chamber.
The head would be attached to a machine that has the ability to gather materials from the local environment, or from pre-made piles of sand, clay, and straw. The exact details of automating the process of combining each is an engineering challenge yet to be solved.
The machine would mix the cob, form it into blocks, add it to the queue, and move the head in high precision. The car-sized machine itself will be moved in low precision by three cables that reach up to the tops of three poles approximately 30-40 ft in the air and 30-40 feet apart from each other (telephone polls may be used), the exact dimensions giving the total range of the size of the constructed building.
Reward: A house built in the "earthship" style (passive solar heating, off grid power and water, etc...), made with the device.
 

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