Documents / Report
This Defense Intelligence Reference Document from the Defense Intelligence Agency is dated 2 April 2010 and was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It is one of a series of advanced technology reports from FY 2009. It reviews general relativistic warp drives, the cosmological constant, Casimir energy and extra space dimensions. It proposes that dark energy may come from higher dimensions and that controlling those dimensions could one day make a warp drive possible.
UNCLASSIFIED//F8R 8FFIOlllls WOli 8PJLY false minima would be artificially created via the adjustment of the extra dimension (see Figure 8). These modified regions would correspond to increased and negative dark energy densities, thus creating the warp bubble previously discussed. 7.4 ELEMENTARY WARP DRIVE CALCULATIONS This section will explore the calculations relevant to propulsion. Specifically, it will determine the energy required to accelerate a spacecraft to the speed of light. By associating the cosmological constant with the higher dimensional Casimir energy, a straightforward relation between A and the radius of the extra dimensions can be determined: (7.1) A simpler way of developing the relationship between the energy density of space and the expansion of space is to express A as a function of Hubble's constant, H: Hoc ✓A, (7.2) which is a standard result obtained from GR. From these two formula, a relationship between the expansion of space and the radius of the extra dimension can be shown: (7.3) This formula really expresses the foundation of this novel warp drive concept: that a sufficiently advanced technology with the ability to adjust the radius of the extra dimension locally would be able to locally adjust the expansion and contraction of spacetime around a spacecraft. This asymmetric expansion creates the warp bubble illustrated in Figure 1. The spacecraft would always move within its own light cone and thus would not contradict any law of special relativity. The possibility that the higher dimensional radius might vary from place to place has been explored in the context of string theory (Reference 57), and so is a valid academic pursuit. However, it has never before been suggested that this might facilitate a new and exotic form of propulsion. Equations (7.1) and (7.2) used together express a relationship between the expansion of space and the energy density of space. A sufficient increase in the energy density of space would generate a proportional increase in the expansion of space. Thus calculate the energy density of space that would be necessary to generate a local expansion of space at the speed of light. A local expansion at the speed of light, Hubble's constant must be increased by a factor of: (7.4) where H, represents the modified Hubble's constant, and the subscript c indicates that it is the Hubble's constant for the case of light speed expansion. H must be increased by a factor of 10 26 to achieve a local expansion of space equivalent to the speed of light. 20 UNCLASSIFIED//F8R 8FFl01hls Wlii 8Plb¥
Not linked to a story yet.
Report, from the dia collection. The PDF is mirrored here; the original link is above. 33 pages are in the text index: search them above, or from the library's search.