Astronauts will provide the "lunar vacuum cleaner"


28/01/2009

Scientists from NASA believe that future researchers of the moon will be absolutely necessary to have on hand vacuum cleaner. A special device designed to remove dust from the lunar surface, it is useful when cleaning the spacesuits astronauts after a walk on the surface and will not allow the penetration of the lunar dust into living quarters of a lunar base.

Moon dust poses a far greater threat than the Earth. Because of the tiny size and pore structure of the particles, the dust is so tightly adhered to the surface, brushing alone will not completely get rid of it.

"We are dealing with an abrasive Velcro ’Velcro’," - says Pamela Clark (Pamela Clark) Space Flight Center of NASA Goddard, located in Greenbelt, Maryland (NASA’s Goddard Space Flight Center in Greenbelt, Maryland).

The particles also accumulate electrostatic voltage, holding them on the surface. The dust is so abrasive that is fully capable of damaging equipment. In addition, she is a danger to human health, sniffing her.

To solve the problem, the team of scientists developed a special "lunar vacuum cleaner" SPARCLE, which astronauts could use in a transitional gateway to the lunar base. The device consists of a positively charged metal nozzle connected to the electron gun (similar to that used in electron microscopes) emitting a focused beam of electrons.

After working out of a lunar base astronauts need to "scan" the beam vacuum cleaner surface contaminated equipment, bombarding it with electrons until all the dust particles and the surface does not become negatively charged and will repel each other. Stragglers from the surface of the particles of lunar dust are sent to the positively charged nozzle, where it collected in a receiver.

Lawrence Taylor (Lawrence Taylor), exploring the lunar dust at the University of Tennessee at Knoxville (University of Tennessee in Knoxville), noted that the larger particles of dust can collect a magnet. According to him, the combination of these two techniques will give the best results. Just for you the most interesting news on the pages of our portal.

Original: Science.nasa.gov


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