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This is an unclassified Defense Intelligence Reference Document (DIA-08-1003-015), dated 29 March 2010. The Defense Intelligence Agency prepared it under the Advanced Aerospace Weapon System Applications (AAWSA) Program, and Rep. Burchett entered it into the House committee record. The paper uses a general relativity metric tensor approach to look at how engineering spacetime might enable propulsion, including warp drives, apparent superluminal travel, reduced effective mass and antigravity. It finds these ideas consistent with physics but far beyond present engineering capability.
UNCLASSIFIED/ /491;WerafrialMIGiablah relative to the reference frame of background space, energy bonds of materials strengthened (that is, hardened) relative to the background environment, a decrease in effective mass vis-à-vis the environment, an accelerated timeframe that would permit rapid trajectory changes relative to the background rest frame without undue internal stress, and the generation of gravity-like forces of arbitrary geometry—all on the basis of restructuring the vacuum spacetime variables. As avant garde as such features appear to be, they are totally in conformance with the principles of general relativity as currently understood. A remaining challenge is to develop insight into the technological designs by which such vacuum restructuring can be generated on the scale required to implement the necessary spacetime modifications. Despite the challenges, sample calculations as presented herein indicate the direction of potentially useful trends derivable on the basis of the application of GR principles as embodied in a metric engineering approach, with the results constrained only by what is achievable practically in an engineering sense. The latter is, however, a daunting constraint. At this point in the consideration of such nascent concepts, given our present level of technological evolution, it is premature to even guess about an optimum strategy, let alone attempt to form a critical path for the engineering development of such technologies. Nonetheless, only through rigorous inquiry into such concepts can one hope to arrive at a proper assessment of the possibilities inherent in the evolution of advanced spaceflight technologies. ' See, for example, a series of essays in the compendium Frontiers of Propulsion Science, Eds. NI. G. Millis and E. W. Davis, AIAA Press, Reston, Virginia (2009). 2 M. Alcubierre, "The warp drive: Hyper-fast travel within general relativity," Class. Quantum Gray. 11, p. L73 (1994). 3 H. E. Puthoff, "SETI, the velocity-of-light limitation, and the Alcubierre warp drive: An integrating overview," Physics Essays 9 p 156 (1996). 4 M. S. Morris and K. S. Thorne, "Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity," Am. 3, Phys. 56, pp. 395-412 (1988). 5 M. Visser, Lorentzian Wormholes: From Einstein to Hawking, Alp Press, New York, 1995. 8 M. S. Morris, K. S. Thorne and U. Yurtsever, "Wormholes, time machines, and the weak energy condition," Phys. Rev. Lett. 61, p. 1446 (1988). ' T. D. Lee, Particle Physics and Introduction to Field Theory, Harwood Academic Press, London (1988). 8 The Philosophy of Vacuum, Eds. S. Saunders and H. R. Brown, Clarendon Press, Oxford (1991). 9 F. Wilczek, The Lightness of Being: Mass, Ether and the Unification of Forces, Basic Books, New York (2008). 19 A. Logunov and M. Mestylrishvili, The Relativistic Theory of Gravitation, Mir Publ., Moscow (1989), p. 76. " Op. cit., p. 83. " S. M. Mahajan, A. Qadir and P. M. Valanju, "Reintroducing the concept of 'force' into relativity theory," II Nuovo Cimento 658, 404 (1981). '3 R. Klauber, "Physical components, coordinate components, and the speed of light," www.arXiv:gr-gc/0105071 vi (18 May 2001). '4 F. de Felice, "On the gravitational field acting as an optical medium," Gen. Rel. and Gray. 2, 347 (1971). 's K. K. Nandi and A. Islam, "On the optical-mechanical analogy in general relativity," Am. J. Phys. 63, 251 (1995). 18 H. E. Puthoff, "Polarizable-vacuum (PV) approach to general relativity," Found. Phys, 32, 927 (2002). '' P. Boonserm et al., "Effective refractive index tensor for weak-field gravity," Class. Quant. Gray. 22, 1905 (2005). 'B X.-H. Ye and Q. Lin, "A simple optical analysis of gravitational lensing,' 3. Modern Optics 55, no. 7, 1119 (2008). 19 H. E. Puthoff, E. W. Davis and C. Maccone, "Levi-Civita effect in the polarizable vacuum (PV) representation of general relativity," Gen. Relativ. Gray. 37, 483 (2005). 29 A. P. Lightman and D. P. Lee, "Restricted proof that the weak equivalence principle implies the Einstein equivalence principle," Phys. Rev. D 8, 364 (1973). C. W. Misner, K. S. Thorne and 3. A. Wheeler, Gravitation, Freeman, San Francisco (1973), p. 5. 22 E. W. Davis, "Chapter 15: Faster-than-Light Approaches in General Relativity," Frontiers of Propulsion Science, Progress in Astronautics and Aeronautics Series, Vol. 227, eds. M. G. Millis and E. W. Davis, AIAA Press, Reston, VA, pp. 473 (2009). 12 UNCLASSIFIED
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Document, cited by the archive. 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.