03
Feb
10

Fisher Space Pen


Got the idea of this post, after watching 3 idiots.

There exists a common urban legend claiming that the Americans spent millions of dollars developing the Space Pen, and the Russians used a pencil. In fact, NASA programs have used pencils (for example a 1965 order of mechanical pencils) but because of the danger that a broken-off pencil tip poses in zero gravity and the flammable nature of the wood present in pencils a better solution was needed.

The Space Pen (also known as the Zero Gravity Pen), marketed by Fisher Space Pen Company, is a pen that uses pressurized ink cartridges and is claimed to write in zero gravity, upside down, underwater, over wet and greasy paper, at any angle, and in extreme temperature ranges.

There are two prominent styles of the pen: the AG7 “Astronaut pen”, a long thin retractable pen shaped like a common ballpoint, and the “Bullet pen” which is non-retractable, shorter than standard ballpoints when capped, but fullsize when the cap is posted on the rear for writing.

The ballpoint is made from tungsten carbide and is precisely fitted in order to avoid leaks. A sliding float separates the ink from the pressurized gas. The thixotropic ink in the hermetically sealed and pressurized reservoir is claimed to write for three times longer than a standard ballpoint pen. The pen can write at altitudes up to 12,500 feet (3810 m). The ink is forced out by compressed air at a pressure of nearly 35 pounds per square inch (240 kPa). Operating temperatures range from -30 to 250 degrees Fahrenheit (-35 to 120 degrees Celsius). The pen has an estimated shelf life of 100 years.

Referenced Wiki.

You could place an order for Space pen at this official website.

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Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.

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