{"product_id":"analysis-and-design-of-phase-change-thermal-control-for-light-emitting-diode-led-spacesuit-helmet-lights-9781289266554","title":"Analysis and Design of Phase Change Thermal Control for Light Emitting Diode (Led) Spacesuit Helmet Lights","description":"\u003cp\u003e • Author(s): Nasa Technical Reports Server (Ntrs) | Et Al | Grant C. Bue\u003cbr\u003e • Publisher: Bibliogov\u003cbr\u003e • Publisher Imprint: Bibliogov\u003cbr\u003e • BISAC: General\u003c\/p\u003e\u003cp\u003eLED 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.\u003c\/p\u003e","brand":"Bibliogov","offers":[{"title":"Paperback","offer_id":47596328714391,"sku":"9781289266554","price":1429.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9781289266554.webp?v=1774993343","url":"https:\/\/atlanticbooks.com\/products\/analysis-and-design-of-phase-change-thermal-control-for-light-emitting-diode-led-spacesuit-helmet-lights-9781289266554","provider":"Atlantic Books","version":"1.0","type":"link"}