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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.
“Masse”33 pages
UNCLASSIFIED/ /F81it 8FFI8It'tk Wliilii &Hkl:f and are controlled by a single FSM which is also the primary mirror and DM. This eliminates the traditional split between local and target loop stabilization, combining both into a single controller. This is accomplished so that the high- power path is minimized to its fundamental limit of six mirrors, which are necessary to get the beam from the HEL module through the coude path and out through the exit aperture of the telescope. • Eliminating the BILL (see Figure 36): The BILL is a solid-state, kilowatt-class laser that measures atmospheric conditions, allowing the beam and fire control systems to compensate for atmospheric turbulence that the HEL beam would encounter in its path to a target. The beam from the BILL bounces off the target and returns to the HEL source, where optical and software equipment measures the amount of distortion in the atmosphere between the HEL source and the target. The HEL adaptive optics system compensates for the distortion using a deformable mirror. Thus, eliminating the BILL was a very important innovation towards decreasing the number of high-power components required in the coude path. Basic Shared Aperture Beam Control System ~ 1~~ ' [ - - - - - - - - t - - - - - ~- _!_ ____ -( - - ~ Q- I l. . ~ -- - - - ,~ -- --I - i • C ,.9·;:_ 0 ~ D E ~~. i Sources of Noise & Jitter it'' - -I Laser I • Platform v,brat,on •Target Sc,ntillat,on ' • Wind and platform ,nduced ' v,brat,on on dorector Gimbals • A!mosphenc Turbulence C41 System • Excess Mechan,cal Tolerances Control I • Latenc,es & inadequate bandwidth ,n tracker loop IOvercomes many of the alignment issues with a dual aperture system I Figure 35. Basic Shared Aperture Beam Control System (TILL= Track Illuminator Laser; C4I = Command, Control, Computing, Communication & Intelligence equipment) (courtesy of the Directed Energy Professional Society). 66 UNCLASSIFIED//FQII. QFFlliil,t.k Wliilii &nlk'f
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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.