Lockheed MartinÂ has testedÂ theÂ U.S. Navy‘s fourth Mobile User Objective System satellite for extreme temperature endurance.
The company performed theÂ thermal vacuum test at itsÂ Sunnyvale, California-based satellite integration facility and MUOS-4 is scheduled for launch inÂ the second half of 2015,Â Lockheed said Monday.
“The successful completion of thermal vacuum testing assures that MUOS-4 can endure the extreme hot and cold temperatures it will experience throughout its on-orbit mission life,” said Iris Bombelyn, vice president of Lockheed’s narrowband communications mission area.
The satellite is designed to help usersÂ transmit and receive voice and data using an Internet Protocol-based system.
MUOS-4 is scheduledÂ for launch next year toÂ joinÂ the Navy’sÂ MUOSÂ constellation.