Documents / Official release
This Defense Intelligence Reference Document, dated 29 March 2010 and prepared by the Defense Intelligence Agency's Defense Warning Office, is one of a series of FY 2009 advanced technology reports under the Advanced Aerospace Weapon System Applications Program. It uses a metric tensor approach from general relativity to catalog the physical effects of engineering spacetime. It covers time alteration, light speed, effective mass, and warp drives. It concludes that these effects are consistent with physics, but that engineering them remains a daunting constraint.
From the source: Release of 2026-09-18 Incident: 3/29/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD examines the idea of vacuum or spacetime-metric engineering: the possibility that an unspecified future technology might alter the structure of spacetime in ways useful for propulsion, power generation, or extremely rapid long-distance travel. Using general relativity as a model-independent framework, it explores the physical effects that would theoretically follow if such metric changes could be artificially induced, including altered time rates, changes in effective mass, modified light propagation, gravity-like effects, and warp-drive propulsion. The document does not propose any mechanism for generating these effects and treats these physical consequences as an assumed result of spacetime manipulation rather than as the outcome of a practical engineering pathway. It also emphasizes that the energy requirements predicted by current theory to create such effects are far beyond existing technological capability.
UNCLASSIFIED/ j FOR OFFICI"L U.!I! Grit I therefore time intervals are seen as lengthening and processes as running slower,2 one consequence of which is redshift of emission lines . Should such a time-slowed condition be engineered in an advanced aerospace application, an individual who has spent time with in such a temporally modified field wou ld, when returned to the normal environment, find that more time had passed than could be experientially accounted for. Conversely, for an engineered spacetime associated with an advanced aerospace craft in wh ich Ji::> 1, t ime flow with in the altered spacetime reg ion would appear sped up to an externa l observer, while to an internal observer externa l time flow would appear to be in slow mot ion. A corollary would be that within the spacetime-altered region, normal environmental sounds from outside the reg ion might cease to be registered, since externa l sounds could under these conditions redshift below the auditory range. An additional implication of t ime speedup within the frame of an exotic craft technology is that its flightpath that might seem precipitous from an external viewpoint (for example, sudden acceleration or deceleration) would be experienced as much less so by the craft's occupants. From the occupants' viewpoint, observ ing the external environment to be in relat ive slow motion, it wou ld not be surprising to consider that one's relatively modest changes in motion would appear abrupt to an external observer. Based on the second ent ry in Table 1 (frequency), yet another implication of an accelerated timeframe due to craft-associated metric engineering that leads t o Ji::> 1, frequencies associated with the craft would fo r a remote observer appear to be blueshifted. Corollary to observation of such a craft is the possibility that there wou ld be a brightening of luminosity due to the heat spectrum blueshifting up into the visible portion of the spectrum (see Figure 1). inf1 red l visible :.. M (shifted infrared)41 ~ $ 3:visible 00 Q. Q. ~CJ 41 0. V) l" C CJ 41 0. V) Frequency w Frequency w Figure 1. Blueshifting of Infrared Heat Power Spectrum With regard to the third ent ry in Table 1 (energy), in a spacetime-altered region, energy scales as Ji: relative to a remote observer in an undistorted spacetime. I n the vicinity of a dense mass where Jg;; I (accelerated timeframe case), a 2 In t he case of approach to a black hole, to stop altogether. UNCLASSIFIED/ /FOR. OFFlelJltt t:ISI! OHL'I 7
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 17 pages are in the text index: search them above, or from the library's search.