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Space vehicles--Air locks

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    • found: Work cat.: Trout, Otto F. An investigation of leakage of large-diameter O-ring seals on spacecraft air-lock hatches, 1968:p. 1 ("An investigation has been conducted to determine the leakage of large-diameter O-ring seals for operable hatch doors and static joints with a vacuum of 1.0 x 10(-6 superscript) torr (1.33 x 10(-2 superscript)N/m(2 superscript) on one side and atmospheric pressure on the other")
    • found: McGraw-Hill dictionary of scientific and technical terms, 2003:p. 57 (air lock - (eng[ineering]) - 1. A chamber capable of being hermetically sealed that provides for passage between two places of different pressure, such as between an altitude chamber and the outside atmosphere, or between the outside atmosphere and the work area in a tunnel or shaft being excavated through soil subjected to water pressure higher than atmospheric. Also known as lock. 2. An air bubble in a pipeline which impedes liquid flow. 3. A depression on the surface of a molded plastic part that results from air trapped between the surface of the mold and the plastic. (min[ing] eng[ineering]) - A casing atop an upcast mine shaft to minimize surface air leakage into the fan)
    • found: Academic Press dictionary of science and technology, 1992:p. 65 (air lock - civil engineering - an airtight chamber used to permit passage between two areas of differing air pressure ... Engineering - a pocket of air or gas in a pipe that impedes or stops the flow of liquid. Mining engineering - a casing at the top of an upcast mine shaft, used to inhibit the leakage of surface air into the fan)
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    • 2003-01-02: new
    • 2003-02-10: revised
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