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Astronauts plan spacewalk at ISS on Tuesday to prepare for new solar arrays

Astronauts plan spacewalk at ISS on Tuesday to prepare for new solar arrays

Science
ORLANDO, Fla., March 15 (UPI) -- Two NASA astronauts plan a spacewalk on Tuesday to prepare for the installation of new solar arrays at the International Space Station, amid tension between Russia and the United States over the Ukraine conflict. Astronauts Kayla Barron, 34, and Raja Chari, 44, plan to exit the station around 8 a.m. EDT for a roughly six-hour spacewalk -- their second and first spacewalks, respectively. They intend to install brackets and struts that will support the future installation of solar arrays. Two of six new solar arrays have been unfurled to power the station's electronics over the past year. NASA officials commented on the tensions over Russia's invasion of Ukraine during a press conference Monday. Joel Montalbano, NASA manager of the ISS program, directly addr...
L-3 Communications receives contract for towed sonar arrays

L-3 Communications receives contract for towed sonar arrays

Business
Sept. 12 (UPI) -- L-3 Technologies Ocean Systems Division has received a $ 49.4 million contract to provide support, testing and repair services for the TB-23 towed array systems. L-3 will salvage, repair and refurbish TB-23/BQ Towed Array Systems, and provide services including engineering and technician operations, depot level support and upgrades. Work on the contract, announced Tuesday by the Department of Defense, will be performed in Sylmar, Calif., and is expected to be completed by December 2021. Navy fiscal 2018 other procurement funding in the amount of $ 4.1 million will be obligated at time of award. The thin-line TB-23 is routinely deployed by submarine-based anti-submarine warfare operations. Active sonar works by using sound waves for underwater object detection and mapping...