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A thermal vacuum test chamber, with its door open, at NASA's Johnson Space Center. A thermal vacuum chamber (TVAC) is a vacuum chamber in which the radiative thermal environment is controlled. Typically the thermal environment is achieved by passing liquids or fluids through thermal shrouds for cold temperatures or through the application of ...
As of 2013, it is the largest high-vacuum, cryogenic-optical test chamber in the world, 55 feet (17 m) in diameter by 90 feet (27 m) tall. It is equipped with a gaseous helium shroud capable of lowering temperatures to 11 K (−439.9 °F; −262.1 °C).
The aluminum test chamber is a vacuum-tight aluminum plate vessel that is 100 feet (30 m) in diameter and 122 feet (37 m) high. Designed for an external pressure of 2.5 psi (17 kPa) and internal pressure of 5 psi (34 kPa), the chamber is constructed of Type 5083 aluminum which is a clad on the interior surface with a 1 ⁄ 8 in (3.2 mm) thick type 3003 aluminum for corrosion resistance.
Sunshield full-size test for the James Webb Space Telescope. In spacecraft design, a Sun shield restricts or reduces heat caused by sunlight hitting a spacecraft. [6] An example of use of a thermal shield is on the Infrared Space Observatory. [6] The ISO sunshield helped protect the cryostat from sunlight, and it was also covered with solar ...
The Long Duration Exposure Facility was used to test various materials in vacuum. Materials for use in vacuum are materials that show very low rates of outgassing in vacuum and, where applicable, are tolerant to bake-out temperatures. The requirements grow increasingly stringent with the desired degree of vacuum to be achieved in the vacuum ...
The Mark 1 Test Facility is a 42-foot-diameter by 82-foot space simulation chamber for full-scale space systems testing. The chamber can be conditioned from atmospheric pressure to 5x10 −7 torr. The chamber can support test articles up to 200,000 pounds [ 3 ]
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