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The Zero Gravity Research Facility is a vertical vacuum chamber used for dropping experiment payloads for testing in microgravity. It enables the investigation of the behavior of components, systems, liquids, gases, and combustion when dropped in vacuum.
The Zero Gravity Research Facility was built in 1966 as part of NASA's Centaur upper-stage rocket development program. In order to ensure proper firing and functioning of upper-stage rockets, NASA needed to understand the behavior of fluids (importantly, the liquid gases fueling the rockets), in the reduced gravity where they would fire.
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.
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Chamber B is smaller, with a diameter of 20 feet (6.1 m), and is served by two 100,000 pound cranes. Like Chamber A, it has two airlocks; one of them is configured to a water deluge system and other elements needed to simulate oxygen-rich environments encountered on spacecraft.
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A Vermont grand jury has indicted a woman accused of sparking a gunfight with Border Patrol agents last month, causing the death of an agent and the German woman she was traveling with.. The ...