{"id":992,"date":"2008-04-30T00:05:40","date_gmt":"2008-04-30T05:05:40","guid":{"rendered":"http:\/\/www.spaceelevatorblog.com\/?p=992"},"modified":"2008-04-30T01:22:20","modified_gmt":"2008-04-30T06:22:20","slug":"dilas-and-usst-at-the-2007-space-elevator-games","status":"publish","type":"post","link":"https:\/\/www.spaceelevatorblog.com\/?p=992","title":{"rendered":"DILAS and USST at the 2007 Space Elevator Games"},"content":{"rendered":"

As has been mentioned in this blog<\/a> (and elsewhere, I’m sure), DILAS<\/a> supplied the laser\u00a0the USST<\/a> team used in their near-prize-winning run at the 2007 Space Elevator Games.<\/p>\n

In this article<\/a> in the online publication Laser Focus World, DILAS (Tucson) General Manager & Vice-President Dr. Georg Treusch discusses this application from the vendor’s viewpoint.\u00a0 It’s a somewhat technical and very interesting article.\u00a0 We learn, for example, that DILAS\u00a0“…supplied the best performer in 2007 with a power-beaming source on very short notice (three weeks), using a new modular diode-laser-based power beamer that is applicable for both terrestrial as well as spaceborne applications.”<\/em>\u00a0 The ‘best performer’ referred to was USST.<\/p>\n

Dr. Treusch also discusses\u00a0what is planned for 2008:<\/p>\n

The new design for the power beamer considers various approaches from different teams using low-cost Si- or highly advanced GaAs-based photovoltaic (PV) cells. Material choices, PV cell, and beam characteristics are up to the competing teams; the challenge simply sets the distance and minimum average rate of climb. Each team is likely to have its own approach with power-beaming systems ranging from 2.5 kW to values above 10 kW.<\/em><\/p>\n

The wavelength for the power-beaming sources will likely be between 800 and 980 nm. High-power diode lasers have efficiencies greater than 60% and power levels greater than 100 W per 10\u00a0mm bar. It is a happy coincidence that Si and GaAs photocells are more efficient at this spectral range compared to wavelengths above 1 \u00b5m, which is the spectral domain of fiber and disk lasers.<\/em><\/p><\/blockquote>\n

A very interesting article – highly recommended.<\/p>\n

Also, while searching through this publication’s archives, I found this article<\/a>.\u00a0 While it focuses on delivering power to photovoltaic cells via fiber-optics, it also discusses delivering power to photovoltaics via ‘free space’; i.e. using light (or lasers).\u00a0 It also briefly mentions the 2005 Space Elevator competition.<\/p>\n

I guess I’ll have to keep watch on this publication, too.\u00a0 So many articles, so little time…<\/p>\n","protected":false},"excerpt":{"rendered":"

As has been mentioned in this blog (and elsewhere, I’m sure), DILAS supplied the laser\u00a0the USST team used in their near-prize-winning run at the 2007 Space Elevator Games. In this article in the online publication Laser Focus World, DILAS (Tucson) General Manager & Vice-President Dr. Georg Treusch discusses this application from the vendor’s viewpoint.\u00a0 It’s […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,4],"tags":[],"class_list":["post-992","post","type-post","status-publish","format-standard","hentry","category-news-announcements","category-spaceelevatorcompetitions"],"_links":{"self":[{"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=\/wp\/v2\/posts\/992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=992"}],"version-history":[{"count":0,"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=\/wp\/v2\/posts\/992\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.spaceelevatorblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}