Testing Things We Put Into Space

Posted on Feb 25th, 2014 by marybabitz
hi-vac bakeouts at Cascade TEK

Space hardware must be free of contamination and be able to withstand radiative behavior of temperature and the very thin atmosphere of space.   100Km straight up  is the Karman line.  This is where the atmosphere becomes too thin to support lift.  Satellites generally fly at about 300 Km above the earth, which for vacuum folks is about 10-6 torr.   Cascade TEK’s SVO hi-vac ovens can reach 10-6 and often into the 10-7 torr range.

Catastrophic Moments In High Vacuum

Posted on May 22nd, 2013 by marybabitz
Hi-Vacuum Pump

Cascade TEK’s hi-vac ovens utilize a turbo pump to get into vacuum levels in the 10-7torr range.   The interior of a turbo pump is loaded with blades that spin as fast as 20,000 rpm to achieve those hi-vacuum levels. The catch is…. turbo pumps cannot pump at atmospheric pressure.  Turbo pumps should only be activated once the 1st stage “rough” vacuum pump has already pumped the system down to a pressure level that is low enough for the turbo to work.

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