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・ NASA Orbital Debris Observatory
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NASA recovery ship
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NASA recovery ship : ウィキペディア英語版
NASA recovery ship

The NASA recovery ships are two ships, the and the , that are tasked with retrieving spent Solid Rocket Boosters (SRBs) following the launch of Space Shuttle missions. Although owned by NASA, the ships are currently operated by Space Flight Operations contractor United Space Alliance.〔(The retrieval ships at nasa.gov )〕
==Design and construction==
Both ships were built at Atlantic Marine Shipyard on Fort George Island, Florida, and delivered in January 1981 to their original owner, United Technologies Inc. They are propelled by two main engines providing a total of 2,900 horsepower (2.2 MW), and are capable of towing each. Two auxiliary engines with jacuzzi-like jets (similar to those found in Naval riverine craft) as well as the extra caution taken by the crew allow the ships to coast up the Banana River without harming the significant manatee population.〔(Welcome Aboard Liberty Star! )〕
All gear on deck, including the deck crane used to lift the booster frustum on deck, compressors for removing seawater from the boosters, winches and reels, bolt on and off to allow the vessels to be used for purposes other than booster recovery such as towing the Pegasus barge from Michoud Assembly Facility.〔
Communications equipment includes a Kongsberg dynamic position system and joy stick control, X-band and S-band radars for tracking ship traffic and the falling SRBs, global positioning system, handheld VHF radios and GPS units, digital video and recording systems, voice and data satellite communication capability, VHF automatic direction finding, high-frequency single-side band radios, electronic chart plotters, night vision and Sea Area-3 Global Maritime Distress Safety System consoles.〔 To satisfy NASA's need for more observational data during shuttle launches, a Weibel Scientific Continuous Pulse Doppler X-band radar was mounted on MV ''Liberty Star'' to provide velocity and motion information about the shuttle and any debris during launch.〔(【引用サイトリンク】url=http://www.nasa.gov/centers/kennedy/pdf/167722main_LaunchImagery06.pdf )

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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