+ NASA Home + Ames Home + Sitemap + Staff Directory +Home COLUMBIA SUPERCOMPUTER + Scientific Projects + News NAS DIVISION IMAGES Concept A Ice/Frost Ramp Redesign Surface grids around one of the 'Concept A' ice/frost ramps on the liquid hydrogen portion of the External Tank. Also shown are the cable tray and two pressure lines. Credit: Stuart Rogers, NAS Division + Feedback + Site Help + NASA Privacy Statement, Disclaimer, and Accessibility Certification Editor: Jill Dunbar Webmaster: Ryan Spaulding NASA Official: Rupak Biswas + Contact NAS Last Updated: January 31, 2007