Spaceflight Insider

News Archive / Tagged: MUOS-5

  • MUOS-5 Now Supporting Troops with UHF Communications

    Paul KnightlyApril 28th, 2017

    The fifth Mobile User Objective System (MUOS-5) satellite is now delivering secure communications to troops using its Ultra High Frequency (UHF) telecommunications system. This comes as the U.S. Navy, partnered with the Army Forces Strategic Command, have worked to bring MUOS-5 into operation after it successfully completed on-orbit testing on January 19, 2017.

  • MUOS-5 satellite starts pre-operational testing

    Jason RhianNovember 6th, 2016

    The fifth, and final, MUOS satellite has reached its intended orbit and has started pre-operational testing. With the spacecraft's solar array and antennas now deployed, it marks a turning point for the satellite which encountered a problem with its propulsion system.

  • MUOS-5 orbit raising problem identified as propulsion failure

    Derek RichardsonAugust 2nd, 2016

    The June 29 anomaly that halted the fifth Mobile User Objective System (MUOS-5) satellite from reaching its targeted geostationary orbit (GEO) has been determined to be due to an issue with the orbit raising propulsion system. The Navy, however, has not identified an exact cause for the failure.

  • MUOS-5 encounters anomaly while raising orbit

    Derek RichardsonJuly 8th, 2016

    An anomaly has temporarily halted the fifth Mobile User Objective System (MUOS-5) satellite from reaching its targeted geostationary orbit (GEO), according a statement from the United States Navy. The announcement comes just two weeks after the craft was launched atop a United Launch Alliance (ULA) Atlas V rocket.

  • Photo Gallery: Atlas V Launches MUOS-5

    Mike DeepJune 24th, 2016

    The United Launch Alliance launched their Atlas V rocket with the fifth Mobile User Objective System (MUOS-5), the final spacecraft in a five-satellite communications system for the U.S. military. The launch took place at 10:30 a.m. EDT (14:30 GMT) June 24 from Cape Canaveral Air Force Station's Space Launch Complex 41.

  • Atlas V successfully launches MUOS-5

    Bart LeahyJune 24th, 2016

    On a sunny, sticky day at Cape Canaveral Air Force Station’s Space Launch Complex 41 (SLC-41), the United Launch Alliance (ULA) celebrated its seventh flight of the Atlas V 551 (the 63rd Atlas V mission overall) with the successful launch of the U.S. Navy’s fifth Mobile User Objective System (MUOS-5) satellite.

  • ULA set to launch Atlas V with MUOS-5

    Derek RichardsonJune 22nd, 2016

    After being delayed a month-and-a-half due to a March 2016 in-flight anomaly, the United Launch Alliance (ULA) is gearing up to fly its next Atlas V rocket. The payload for this mission is the U.S. Navy’s fifth Mobile User Objective System (MUOS-5).

  • ULA releases OA-6 launch anomaly report, clears Atlas V for next flight

    Larry KlaesJune 17th, 2016

    When ULA's Atlas V rocket sent the OA-6 Cygnus cargo vessel, the S.S. Rick Husband, to the International Space Station (ISS) on March 22, 2016, mission controllers detected an anomaly as the rocket headed into low-Earth orbit with its several tons of important supplies and equipment for the astronauts aboard the station.

  • ULA: Currently no impact to the remainder of 2016 Atlas V manifest

    Jason RhianApril 14th, 2016

    A recent report has suggested that flights of ULA's Atlas V rocket have been "suspended" after the March 22, 2016, in-flight anomaly. On that mission, the rocket's RD-180 on the first stage of that Atlas V shut down earlier than planned. SpaceFlight Insider reached out to ULA for clarification regarding these statements.

  • MUOS-5 mission delayed indefinitely due to problems encountered on OA-6 mission

    Jason RhianApril 9th, 2016

    CAPE CANAVERAL, Fla. — ULA announced on Friday, April 8, that the flight of the MUOS-5 satellite would be delayed from May 12 until an unspecified time. This latest slip was due to an in-flight anomaly encountered in the Atlas V 401 rocket that launched the OA-6 Cygnus spacecraft on its way to the ISS on March 22, 2016.

  • ULA: Anomaly on OA-6 mission originated in first stage fuel system

    Jason RhianApril 1st, 2016

    CAPE CANAVERAL, Fla. — ULA is investigating the cause of the premature first stage shutdown that occurred during the March 22, 2016, launch of Orbital ATK's S.S. Rick Husband (Cygnus) spacecraft; they state that the issue was tracked down to the Atlas V 401 first stage's fuel system.

  • OA-6 ascent anomaly causes delay of MUOS-5 mission

    Jason RhianMarch 26th, 2016

    CAPE CANAVERAL, Fla. — The launch of the MUOS-5 satellite has been delayed a week from May 5 until May 12 pending the outcome of the investigation revolving around the in-flight anomaly encountered on the OA-6 mission on March 22. It is hoped that the extra week will provide engineers with the time needed to ensure that no issues are encountered on Tuesday's flight.

  • Fifth MUOS spacecraft transported to Cape in preparation for May launch

    Jason RhianMarch 12th, 2016

    CAPE CANAVERAL, Fla. — The U.S. Navy's version of smartphone technology is poised to receive its final component when it will be sent aloft atop a United Launch Alliance Atlas V 551 rocket this May. The fifth Mobile User Objective System (MUOS) satellite has been sent to Cape Canaveral Air Force Station for a planned May 3, 2016, flight.