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Defense Intelligence Reference Document Laser Lightcraft Nanosatellites

Defense Intelligence Agency · 77 pages · text from the file's own layer

This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 1 November 2010, was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It describes nanosatellite technologies and proposes launching nanosats into orbit with laser Lightcraft propulsion. It also covers a weapon mission selection study and multi-megawatt laser options. The author recommends that the Department of Defense and NASA bring Lightcraft R&D back to the United States and restart the X-50LR flight demonstration program.

  • p. 8 …The sensor must be capable of detecting Earth over a range of orbital radii with a…
  • p. 17 …For the purpose of this report, we envision a Lightcraft Earth-to-Orbit (ETD) transportation system…
  • p. 34 …not only placing nanosats into LEO at low cost (Figure 14), but also for performing much…
  • p. 42 …Each picosat is gravity- gradient stable, has a dipole array facing Earth, and a broader beam…
  • p. 43 …811L¥ push broom scanning mode for complete Earth coverage rather than only sampling coverage. The constellation…
  • p. 72 …The system is single-stage-to-orbit and completely reusable with no onboard propellant required (the…
  • p. 75 …J., et al. (1991), "System Requirements for Low-Earth-Orbit Launch Using Laser Propulsion," in Proc…
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Table 5. Influence of Lightcraft and Target Velocity on Impact Energy and
Required Mass [261.
Lightcraft Lightcraft Impact Ballistic Missile Threat
Intercept Intercept Energy 1--SRBM IRBM ICBM-
Aspect Velocity and R~lO00 km R~2500 km R~l0,000 km
Weight V=2 km/s V=4 km/s V=6km/s
Impact E for 16MJ 36MJ 641\IJ
2 km/s 1.0 kg Wt.
Wt for 10 .63 kg
MJ ofE .28 kg .16 kg
0° from Impact E for 25MJ 49MJ 81 MJ
Head-on 3 km/s 1.0 kg Wt.
Collision Wt. For 10 .40 kg .20 kg .12 kg
MJ ofE
Impact E for 36 MJ 64MJ 100 }IJ
1.0 kg Wt.
4 km/, Wt. for 10 .28 kg .16 kg .l0kg
MJ ofE
RECOMMENDED LIGHTCRAFT MISSIONS FOR BALLISTIC MISSILE
DEFENSE
Laser-powered Lightcraft, flown on air-to-space trajectories, show much promise for
performing exo-atmospheric BMD missions, especially if the laser can also be used to
discriminate warhead-carrying vehicles from decoys and non-threatening debris. Such
Lightcraft also appear capable of eliminating enemy satellites in LEO, if the Lightcraft
laser can illuminate them. But a significant effort would be required to analyze the
engagement scenarios for such a system, and fully investigate the decoy discrimination
and satellite tracking capabilities of the Lightcraft's pulsed laser and the hit-to-kill
guidance requirements for the Lightcraft itself.
Locating lasers and Lightcraft on existing aircraft, such as the Boeing 747, B-1 Lancer,
or C-130, appears to be an attractive alternative to ground/sea-based laser Lightcraft
systems. In this case, airborne laser beams at 12 km altitude will not suffer the
significant propagation losses that occur when guiding and propelling Lightcraft through
the lower atmosphere, and greater Lightcraft flight range should therefore be
achievable. (The increase in laser range, due to reduced propagation losses, for high
altitude operation will be somewhat diminished because of the smaller allowable
apertures on aircraft-mounted laser optics, which are on the order of 1.0 m as
compared to apertures on the order of 10.0 m for large ground/sea-based laser
installations.) Furthermore, airborne laser Lightcraft systems possess much greater
operational flexibility since their carrier aircraft can fly over significant distances to
reach desired launch locations, and can be based at almost any major Air Force facility
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 77 pages are in the text index: search them above, or from the library's search.