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    Astronauts Taking Spacewalk Outside ISS




    2018-05-17 10:48 | 中国搜索 美宇航员完成约6个半小时太空行走

    NASA - Official Site



    Watch Live Now! Astronauts Taking Spacewalk Outside ISS

    Space.com · 16h
    Two NASA astronauts are taking a spacewalk outside the InternationalSpace Station today (May 16) to replace a failed pump flow control …

    Space Station today (May 16) to replace a failed pump flow control …

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    Watch Live Now! Astronauts Taking Spacewalk Outside ISS

    By SPACE.com Staff | May 16, 2018 06:32am ET

    Two NASA astronauts are taking a spacewalk outside the International Space Station today (May 16) to replace a failed pump flow control device in the outpost's cooling system. Astronauts Drew Feustel and Ricky Arnold are expected to spend at least 6.5 hours working outside the International Space Station. The spacewalk webcast will begin at 6:30 a.m. EDT (1030 GMT), with the spacewalk itself beginning at 8:10 a.m. EDT (1210 GMT). Watch it live here, courtesy of NASA TV.
    From NASA's press release:
    Two NASA astronauts are scheduled to venture outside the International Space Station for a pair of six-and-a-half-hour spacewalks May 16 and June 14. Experts from NASA will preview the work to be done during the spacewalks in a briefing at 2 p.m. EDT Tuesday, May 8, at NASA’s Johnson Space Center in Houston.
    Live coverage of the briefing and spacewalks will air on NASA Television and the agency’s website.
    Expedition 55 Flight Engineers Drew Feustel and Ricky Arnold will put on spacesuits for what will be the 210th and 211th spacewalks in support of station assembly, maintenance and upgrades. These spacewalks will be the eighth and ninth of Feustel’s career, and the fourth and fifth of Arnold’s. The primary objectives are to finish upgrading cooling system hardware and install new and updated communications equipment for future dockings of commercial crew spacecraft.
    The first spacewalk will begin about 8:10 a.m. Wednesday, May 16. NASA TV coverage will begin at 6:30 a.m. Feustel and Arnold will move a component called a Pump Flow Control Subassembly (PFCS) from a spare parts platform on the station’s truss “backbone” to the Special Purpose Dexterous Manipulator (Dextre) robotic arm. The PFCS drives and controls the flow of ammonia through the exterior portions of the station’s cooling system. Robotics controllers on Earth will use Canadarm2 and Dextre to perform final installation on the port-side truss for checkout. The spacewalkers will remove a failed PFCS and return it to the spare parts depot. They’ll also replace a camera system on the Destiny Laboratory and a communications receiver. This also be the 50th spacewalk originating from the station’s Quest airlock. Other assembly and maintenance spacewalks have begun from space shuttle and Russian airlocks.
    The second spacewalk is planned for Thursday, June 14, following the anticipated May 24 arrival of the Orbital ATK Cygnus cargo resupply spacecraft. The ninth Cygnus cargo mission is scheduled to launch May 20 from NASA’s Wallops Flight Facility in Virginia.
    During the June 14 spacewalk, Arnold and Feustel will install a pair of brackets and high-definition cameras on the Harmony module that will help commercial crew vehicles align with the international docking adapter at the forward end of Harmony. The cameras also will provide wireless data network access for experiments and facilities mounted on the ESA (European Space Agency) Columbus laboratory and Japan Aerospace Exploration Agency Kibo laboratory. The crew also will replace a camera on the station’s starboard truss.
    For more information about the International Space Station, its research and crew, visit:

    Follow us @Spacedotcom, Facebook and Google+.

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