{"product_id":"analysis-and-design-of-phase-nasa-technical-reports-server-ntrs-9781289266554","title":"Analysis and Design of Phase Change Thermal Control for Light Emitting Diode (Led) Spacesuit Helmet Lights","description":"LED Helmet Extravehicular Activity Helmet Interchangeable Portable (LEHIP) lights for the Extravehicular Mobility Unit (EMU) have been built and tested and are currently being used on the International Space Station. A design is presented of the passive thermal control system consisting of a chamber filled with aluminum foam and wax. A thermal math model of LEHIP was built and correlated by test to show that the thermal design maintains electronic components within hot and cold limits for a 7 hour spacewalk in the most extreme EVA average environments, and do not pose a hazard to the crew or to components of the EMU.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Nasa Technical Reports Server (Ntrs),Grant C. Bue\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1289266557\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781289266554\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 07\/31\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 30\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.16lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.06d","brand":"Nasa Technical Reports Server (Ntrs)","offers":[{"title":"Paperback","offer_id":48449488224511,"sku":"9781289266554","price":15.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_78c6ae76-a7ff-4284-bdc1-58cebe7d0701.jpg?v=1777263610","url":"https:\/\/www.whiterainbookhouse.com\/products\/analysis-and-design-of-phase-nasa-technical-reports-server-ntrs-9781289266554","provider":"WR Book House","version":"1.0","type":"link"}