Defense Intelligence Reference Document Antigravity For Aerospace Applications

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This Defense Intelligence Reference Document (DIA-08-1003-018), dated 30 March 2010, was produced by the Defense Intelligence Agency as part of its FY 2009 Advanced Aerospace Weapon System Applications (AAWSA) Program. It reviews theoretical approaches to antigravity for aerospace propulsion, drawing on Newtonian physics, general relativity, cosmological dark energy and quantum vacuum effects. The report notes that no current technology can actively control gravity and that many concepts are far from practicable engineering.

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p. 6 …Instead, aerospace vehicles will only need to have the propellant mass and infrastructure necessary to change…
p. 7 …Observe in Equation (1) that the force of gravity acting on a small test mass becomes…
p. 8 …Its gravitational acceleration is ag = 4Gp,, where p is the mass density of the disk and…
p. 9 …One example of an antigravity generator is based on a system of accelerated masses whose mass…
p. 10 …As shown in Figure 2, a mass flow T through a pipe wound around a torus…
p. 11 …As shown in Figure 3, an inside-out turning ring of very dense mass (M) will…
p. 12 …1) any mass with a velocity and an acceleration exerts many different general relativistic forces on…
p. 13 …Felber's analysis includes examples where he uses black holes for the large source mass. This…
p. 14 …second and higher-order in the source mass velocity. To invent a relativistic driver for a…
p. 16 …For example, the Earth's mass density is 5,500 kg/m 3 so Ron"" 4…
p. 17 …Thus the mass Min Equation (9) can be replaced with the negative energy density -pE* = -pc2…
p. 18 …same speed II has an effective gravitational mass density of p(l + u2/c2). Thus, for…
p. 21 …Temo/m (Temo is absolute temperature, mis mass), while a relativistic gas (of radiation) hasp= p…
p. 22 …present-day value of the total cosmological mass density of (ordinary and dark) matter (Reference 54…
p. 23 …Also, the second term is independent of the interacting particle masses and can only be measured…
p. 24 …a gravitational field behaves like a negative mass (Reference 63). Fc,,_c;,.," is actually the sum…
p. 25 …the rest-Casimir energy and rest-mechanical mass whereby the contribution of the vacuum ZPF leads…
p. 27 …At this distance, the effective total gravitational mass Md,r + UJ;1Jc2 = o and the self…
p. 28 …4 x 10-15 m/s2 (mH = mass of hydrogen atom). For the case of two…
p. 29 …1, where F11uu,, is the total gravity-induced thrust, M,ch is the vehicle mass, mA…
p. 30 …Presently, the technology does not exist to achieve the astronomical mass densities, extreme velocities or accelerations…
p. 39 …Co., Reading, Mass., 1971, pp. 10. 2 Forward, R. L., Future Magic: How Today's Science…
p. 43 …campo gravitazionale uniforme e sul peso delle masse elettromagnetiche," Nuovo Cimento, Vol. 22, 1921, pp. 176…

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References
[1] Symon, K. R., Mechanics, 3 rd ed., Addison-Wesley Publ. Co., Reading, Mass., 1971,
pp. 10.
[2] Forward, R. L., Future Magic: How Today's Science Fiction Will Become Tomorrow's
Reality, Avon Books, New York, 1988, pp. 103-132.
[3] Forward, R. L., Indistinguishable From Magic, Baen Publ. Enterpr., Riverdale, New
York, 1995, pp. 148-178.
[4] Forward, R. L., "A New Gravitational Field," Science Digest, Vol. 52, 1962, pp. 73-
78.
[SJ Forward, R. L., "Far Out Physics," Analog Science Fiction/Science Fact, Vol. 95,
1975, pp. 147-166.
[6] Davis, E.W., "Advanced Propulsion Study," Air Force Research Laboratory, Final
Report AFRL-PR ED-TR-2004-0024, Air Force Materiel Command, Edwards AFB, CA,
2004, pp. 2-5.
[7] Heaviside, 0., "A Gravitational and Electromagnetic Analogy," The Electrician, Vol.
31, 1893, pp. 281-282, 359.
[8] Thirring, H., "Ober die Wirkung rotierender ferner Massen in der Einsteinschen
Gravitationstheorie," Physikalische Zeitschrift, Vol. 19, 1918, pp. 33-39.
[9] Thirring, H., "Berichtigung zu meiner Arbeit: 'Ober die Wirkung rotierender ferner
Massen in der Einsteinschen Gravitationstheorie,"' Physikalische Zeitschrift, Vol. 22,
1921, pp. 29-30.
[10] Thirring, H., and Lense, J., "Ober den Einfluss der Eigenrotation der Zentralk6rper
auf die Bewegung der Planeten und Monde nach der Einsteinschen Gravitationstheorie,"
Physikalische Zeitschrift, Vol. 19, 1918, pp. 156-163.
[11] Mashhoon, B., Hehl, F. W., and Theiss, D.S., "On the Gravitational Effects of
Rotating Masses: The Lense-Thirring Papers Translated," General Relativity and
Gravitation, Vol. 16, 1984, pp. 711-750.
[12] Forward, R. L., "General Relativity for the Experimentalist," Proceedings of the
Institute of Radio Engineers, Vol. 49, 1961, pp. 892-904.
[13] Forward, R. L., "Antigravity," Proceedings of the Institute of Radio Engineers, Vol.
49, 1961, p. 1442.
[14] Forward, R. L., "Guidelines to Antigravity," American Journal of Physics, Vol. 31,
1963, pp. 166-170.
[15] Felber, F. S., "Exact Relativistic 'Antigravity' Propulsion," Proceedings of the STAIF-
2006: 3 rd Symposium on New Frontiers and Future Concepts, edited by M. S. EI-Genk,
AIP Conf. Proc. Vol. 813, AIP Press, New York, 2006, pp. 1374-1381.
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