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Date: 2011-05-09 23:11:12Defense Advanced Research Projects Agency Walrus HULA VTOL Airship Survivability Helicopter Space Shuttle Aviation Aircraft Transport | WALRUS HEAVY LIFT AIR VEHICLE DESIGN PROGRAMAdd to Reading ListSource URL: www.defensetech.orgDownload Document from Source WebsiteFile Size: 417,38 KBShare Document on Facebook |