AAWSAP DIRD, Advanced Nuclear Propulsion for Manned Deep Space Missions, March 2010

This Defense Intelligence Reference Document is dated 11 March 2010. It was prepared by the Defense Intelligence Agency's Defense Warning Office as part of the Advanced Aerospace Weapon System Applications program. It is a technical paper arguing that spacecraft driven by deuterium thermonuclear reactions could be built with current science and could reach the outer solar system. It covers magnetic insulation, ignition by proton beams, a Super Marx generator and conjectured chemical superexplosives. It does not discuss any UFO sightings.

From the source:Release of 2026-09-18 Incident: 3/11/10, 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 advanced nuclear propulsion for crewed deep-space travel and argues that human missions beyond the Moon would require propulsion systems with both very high thrust and very high specific impulse, which the author contends are difficult to achieve with conventional chemical, nuclear-thermal, and nuclear-electric systems. The report focuses on concepts derived from Project Orion, the discontinued General Atomics nuclear pulse propulsion study sponsored first by ARPA and later by the U.S. Air Force between 1958 and 1965, in which a spacecraft would be driven by repeated nuclear explosions. In this case, the DIRD emphasizes small non-fission-triggered fusion explosions using deuterium, magnetic mirrors, and other unconventional ignition concepts intended to avoid the inefficiencies associated with small fission devices. It presents these ideas as a possible pathway to crewed missions across the solar system, while also linking them to broader visions of long-range human expansion into space. The document is exploratory in character and depends on several unproven ignition methods, enabling technologies, and engineering assumptions. Overall, it is a theoretical examination of fusion-based pulse propulsion concepts rather than as a documentary account of a technology nearing practical realization.

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Calculations done by Muller, Rafelski, and Greiner (Reference 22) show that for
molecular states 3sBr- JsBr, s3I- 79Au, and 92U- 92U, a twofold lowering of the distance of
separation leads to a lowering of the electron orbit energy eigenvalues by ~0.35 keV
and 1.4 keV, respectively. At a pressure of 100 Mb = 10 14 dyn/cm 2 where d/do = 1/2,
the result of these calculations can be summarized by (oE in keV)
tog oE = 1.3 x 10-2 z - 1.4 (42)
replacing equation ( 40), where Z is here the sum of the nuclear charge for both
components of the molecule formed under the high pressure.
The effect the pressure has on the change p
in these quasi-molecular configurations is
illustrated in Figure 16, showing a p - d Pc
(pressure-lattice distance) diagram. Th is
diagram illustrates how the molecular
state is reached during the compression
along the adiabat a at the distance d = de
where the pressure attains the critical
value p = p, . In passing over this
pressure, the electrons fall into the
potential well of the two-center molecule,
releasing their potential energy as a burst
of X-rays. Following its decompression,
the molecule disintegrates along the
lower ad iabat b . d
Figure 16. p-d, Pressure. Inneratomic distance
If the conJ·ectured superexplosive consists diagram for the upper atom ic and lower molecular
adiabat.
of just one element, as in the case of the
3s8r - 3s8r reaction or the 92 LJ - 92 LJ reaction, no special preparation for the
superexplosive is needed. But as the example of AI-FeO thermite reaction shows,
reactions with different atoms can release a much larger amount of energy compared
with other chemical reactions. For the conjectured superexplosives, this means they
have to be prepared as homogeneous mixtures of nano-particle powders, bringing the
reacting atoms as close together as possible.
For the ignition of a thermonuclear reaction, one may consider the following scenario
illustrated in Figure 17. A convergent shock wave launched at the radius R = Ro into a
spherical shell of outer and inner radius Ro, R1 reaches near the radius R = R1 at a
pressure of 100 Mb. A~er the inward-moving convergent shock wave has reached the
radius R = □ R1, an outward-moving rarefaction wave is launched from the same radius
R = R1, from which an intense burst of X-rays is emitted. One can then place a
thermonuclear DT target inside the cavity of the radius R = R1, with the target
bombarded, imploded, and ignited by the X-ray pulse. The ignited DT can there serve
as a "hot spot" for the ignition of deuterium.
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