Documents / Report
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.
“beam of light”10 pages
UNCLASSIFIED//F&II. &FFiii,111!! l!llili &HI!¥ storage device capable of cooling DEW systems. Their 3 MJ device is the first large- scale module capable of storing heat at a high rate as required for DEW systems, and it stores heat at an average rate of 230 kW. Heat is stored in a 35 kg module by melting a wax-type phase change material (see Figure 21). These materials, by themselves, cannot support the high heat transfer rate and must be combined with other materials to enhance their thermal properties in order to make them work. Thermal management is one of the many challenges of the high-power BSSSL devices used in DEW systems, which produce tremendous amounts of waste heat. Rejecting heat from these systems in real time is not practical, making thermal energy storage a necessity. The cost of BSSSL systems and related infrastructure are becoming competitive with that of the proposed 10 MW electron gun-driven CO2/gas mixture lasers. BS SSL costs are continuously decreasing as their technology matures and as more systems become widely available for testing and operational deployment. The HELLADS matched-index- of-refraction liquid cooling technique and General Atomics' advanced thermal energy storage device will also dramatically improve the cost competitiveness of BSSSL systems compared to all chemical and gas dynamic laser systems by producing greater efficiencies in solid-state lasing operation while at the same time increasing the average beam power. Figure 21. Phase Change Materials Allow Storage of Large Intermittent Heat Loads While Slow Regeneration Removes Heat from Aircraft (courtesy of P. Saunders, AFRL/RDS, Kirtland AFB, NM). High Power Fiber Laser From 2006 to 2009, a newly emergent class of solid-state lasers, called high-power fiber lasers (HPFLs), has undergone transformational innovations resulting in a 10-fold increase in near diffraction-limited beam output power of a single-fiber laser operating with broadband output in the 1 μm wavelength region with 90% optical efficiency, > 52 UNCLASSIFIED//F&~ 8FFI&I.«1k W&liii SUlklf
Not linked to a story yet.
Report, from the dia collection. The PDF is mirrored here; the original link is under it. 77 pages are in the text index: search them above, or from the library's search.