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This Defense Intelligence Reference Document, dated 29 March 2010 and prepared by the Defense Intelligence Agency, is one of a series of advanced technology reports produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It uses a metric tensor approach from general relativity to catalog the physical effects of engineering spacetime, such as altered time, mass, light speed and antigravity. It concludes that such concepts, including warp drives, are consistent with physics, but that the energy requirements remain daunting.
“The Times”10 pages
UNCLASSIFIED/ ;reR: 8Pflll.t.k WE&i '"" Y Table 1. Metric Effects on Physical Processes in an Altered Spacetime as Interpreted by a Remote (Unaltered Spacetime) Observer Variable Typical Stellar Mass Spacetime-Engineered (Xoo 1) Metric (x(xl>L lg,,1 c Mass 111 = E/c" ➔ (-g II / Ji:)m Effective mass increases Effective mass decreases Gravitational "force" !Cr:11u,g11) "Gravitational" "Antig ravitationa I" Spatial Interval Again, by considering the case typical for an altered spacetime metric in the vicinity of, say, a stellar mass, then ~>I for the radial dimension x 1 = r, as expressed by the second term in Equation (4). Therefore, local measurements with physical rulers within the altered spacetime yield a spatial interval ~dr > dr; thus a spatial interval dr between two locations in an undistorted spacetime-say, remote from the mass-would be judged by local (proper) measurement from within the altered spacetime to be greater. From this one can rightly infer that, relatively speaking, rulers (atomic spacings and so forth) within the altered spacetime are shrunken relative to their values in unaltered spacetime. Given this result, a physical object (for example, atomic orbit) that possesses a measure !J.r in unaltered spacetime shrinks to !J.r ➔ !J.r/ ~ when placed within the altered spacetime. Conversely, under conditions for which ~ < 1, objects would expand-thus the fourth entry for the table of physical effects. Velocity of Light in Spacetime-Altered Regions Interior to a spacetime region altered by, say, a dense mass (for example, a black hole), the locally measured velocity of light c in, say, the x 1 = r direction is given by the ratio of locally measured (proper) distance/time intervals for a propagating light signal (Reference 13). (6) 4 UNCLASSIFIED/ ,'1"91t 91"1"U!lit.1! l!l!il! 8111!¥
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 17 pages are in the text index: search them above, or from the library's search.