Open Source Human Space Flight
“One man’s kitchen sink valve is another rocket man’s missing component. A D.I.Y. spaceflight project can start with a good rummage at your local plumbing or hardware store. With everyday, off-the-shelf products, the guys behind Copenhagen Suborbitals found cheaper solutions to expensive, complex systems. “Instead of trying to invent our own valve for instance, why not buy one that’s been produced maybe a million times,” explained Kristian. He said they used a hair dryer in one of the first rocket tests in order to prevent one of the valves from freezing up. Copenhagen Suborbitals doesn’t operate within limits but rather works around edges. Money and technology are hard to come by, sure, but limitations can often be a blessing in disguise. Instead of shelling out money they didn’t have in order to rent an expensive centrifuge at a NASA research center, the Copenhagen guys went to their local amusement park, the legendary Tivoli Gardens, and turned up the levels on a mechanical ride in order to test a g-force threshold for the eventual launch of their spaceship.” More at Popular Science