USA-243

USA-243, also known as WGS-5, is a United States military communications satellite. It was the fifth satellite to be launched as part of the Wideband Global SATCOM program[2] and the second Block II satellite.[3]

USA-243
Artist's impression of a WGS-5 satellite in orbit
NamesWGS-5
WGS SV-5
Wideband Global SATCOM-5
Mission typeMilitary communications
OperatorUnited States Air Force / United States Space Force
COSPAR ID2013-024A
SATCAT no.39168
Websitehttps://www.spaceforce.mil/
Mission duration14 years (planned)
10 years and 5 months (in progress)
Spacecraft properties
SpacecraftWGS-5
Spacecraft typeWGS Block II
BusBSS-702HP
ManufacturerBoeing Satellite Systems
Launch mass5,987 kg (13,199 lb) [1]
Dry mass3,000 kg (6,600 lb)
Power11 kW
Start of mission
Launch date25 May 2013, 00:27 UTC
RocketDelta IV M+ (5,4) (s/n D362)
Launch siteCape Canaveral, SLC-37B
ContractorUnited Launch Alliance
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude52.5° West (Contiguous United States)
Transponders
BandX-band and Ka-band
Frequency7.2/8.4 GHz (X-band) 30/20 GHz (Ka-band)
 

Overview

The WGS system is a system of military communications satellites that use cost-effective methods and technological advances in the communications satellite industry. The WGS system is composed of three principal segments: Space Segment (satellites), Control Segment (operators), and Terminal Segment (users). Each WGS satellite provides service in multiple frequency bands, with the ability to cross-band between the two frequencies on board the satellite. WGS augments other satellites.

In early 2001, a satellite communications industry team led by Boeing Satellite Systems was selected to develop the Wideband Gapfiller Satellite (WGS) system as a successor to the Defense Satellite Communications System (DSCS) series of communications satellites. It is intended to support the U.S. Armed Forces with greater capabilities than those provided by other systems. In March 2007, the acronym WGS was changed to Wideband Global SATCOM.

A major part of the U.S. military's global satellite communications, the Wideband Global SATCOM Satellite (WGS) system helps the U.S. Military through the operation of the control systems and provides long haul communications for the Department of Defense.

Satellite description

WGS-5 is based on the BSS-702HP satellite bus. It has a mass of 5,987 kg (13,199 lb)[1] and a design life of fourteen years.[4] Its two solar panels generate upwards of 11 kW of power.[4] The satellite is equipped with X-band and Ka-band transponders. A R-4D bi-propellant rocket motor and four XIPS-25 ion engines provide propulsion for maneuvering.

Launch

WGS-5 was launched by the United Launch Alliance on a Delta IV M+ (5,4) launch vehicle, named Delta 362, from the Space Launch Complex (SLC-37B) at the Cape Canaveral Air Force Station (CCAFS) at 00:27 UTC on 25 May 2013. The satellite was placed into a supersynchronous transfer orbit. From there, the satellite was maneuvered into geostationary orbit.[5]

A launch attempt 24 hours before was aborted due to a problem with a helium pressurization line.[3] The launch was successful.[6]

References
  1. "WGS-5 Delta IV Mission Overview" (PDF). United Launch Alliance. Archived from the original (PDF) on 16 September 2013. Retrieved 25 May 2013.
  2. "Communications satellite launched into space". NBC News. 24 May 2013. Retrieved 25 May 2013.
  3. "Delta IV rocket launches from Cape Canaveral". Central Florida News 13. 24 May 2013. Retrieved 25 May 2013.
  4. "WGS 4, 5, 6, 7 (WGS Block 2)". Gunter's Space Page. 4 November 2020. Retrieved 19 May 2021.
  5. Graham, William (24 May 2013). "ULA Delta IV successfully lofts WGS-5 satellite". NASASpaceFlight.com. Retrieved 25 May 2013.
  6. Ray, Justin (25 May 2013). "Delta Mission Report - Mission Status Center". Spaceflight Now. Retrieved 25 May 2013.
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