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Defense Intelligence Reference Document Advanced Space Propulsion Based On Vacuum Engineering

Defense Intelligence Agency · 17 pages · text from the file's own layer

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.

  • p. 4 …and several times have changed radically, over the history of science. Today the third view is…
  • p. 7 …dx 11 and time intervals dt, defined in a flat Minkowski spacetime, the spacetime of common…
  • p. 8 …Given that frequency measurements are the reciprocal of time duration measurements, the associated expression for frequency…
  • p. 9 …the x 1 = r direction is given by the ratio of locally measured (proper) distance/time…
  • p. 11 …TIME ALTERATION With regard to the first table entry (time interval), in a spacetime-altered region…
  • p. 12 …An additional implication of time speedup within the frame of an exotic craft technology is that…
  • p. 13 …the conventional speed of light could occur in principle, and therefore the possibility of reduced-time…
  • p. 15 …short travel times between two distant points in space. The behavior of the warp drive metric…
  • p. 16 …Signatures of the predicted contractions and expansions of space, slowdown and speedup of time, alteration of…
  • p. 17 …Yurtsever, "Wormholes, time machines, and the weak energy condition," Phys. Rev. Lett. 61, p. 1446 (1988…
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Contents
Advanced Space Propulsion Based on Vacuum (Spacetime Metric) Engineering .... iii
Preface and Introduction .......................................................................................iii
I. Spacetime Modification - Metric Tensor Approach .............................................. 1
II. Physical Effects as a Function of Metric Tensor Coefficients .............................. 2
Time Interval, Frequency, Energy ...................................................................... 3
Spatial Interval .............................................................................................. 4
Velocity of Light in Spacetime-Altered Regions .............................................. 4
Refractive Index Modeling ............................................................................. 5
Effective Mass in Spacetime-Altered Regions ................................................. 6
Gravity/ Antigravity "Forces" ......................................................................... 6
III. Significance of Physical Effects Applicable to Advanced Aerospace Craft
Technologies as a Function of Metric Tensor Coefficients ....................................... 6
Time Alteration .................................................................................................. 6
Spatial Alteration ............................................................................................... 8
Velocity of Light/Craft in Spacetime-Altered Regions ........................................ 8
Refractive Index Effects ..................................................................................... 9
Effective Mass in Spacetime-Altered Regions ..................................................... 9
Gravity/ Antigravity/Propulsion Effects ............................................................ 10
IV. Discussion ...................................................................................................... 11
Figures
Figure 1. Blueshifting of Infrared Heat Power Spectrum ........................................ 7
Figure 2. Light-Bending in a Spacetime-Altered Reigon ......................................... 9
Figure 3. Alcubierre Warp Drive Metric Structure ................................................. 11
Tables
Table 1. Metric Effects on Physical Processes in an Altered Spacetime as
Interpreted by a Remote (Unaltered Spacetime) Observer ....................... 4
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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.