Thaicom 8 Communication Satellite, Thailand


Thaicom 8

Thaicom 8 commercial communication satellite is scheduled to be launched into the geosynchronous transfer orbit (GTO) by the end of May 2016, atop the Falcon 9 rocket from Cape Canaveral, Florida.

The satellite will be placed at 78.5°E longitude orbital location, it will offer broadcast and data services covering Thailand, South Asia and Africa. Its operations will be managed by Thailand-based satellite operator, Thaicom PLC.

The satellite and its launch are estimated to cost $178.5m in total.

Thaicom 8 satellite design, features and development

Orbital ATK was awarded the contract to design, manufacture and test the Thaicom 8 satellite in 2013. The assembly, integration and testing of the satellite began in May 2014 at Orbital ATK's satellite manufacturing facility located at Dulles, Virginia. Thaicom 8 is the second satellite built by Orbital for Thaicom PLC after the Thaicom 6, which was launched in January 2014.

Thaicom 8 assembly and integration was completed and the satellite was transported to the launch site in Cape Canaveral in April 2016. The satellite is currently undergoing pre-launch tests at the launch station.

The satellite has a launch mass of 3,200kg and includes two, four-panel solar wings with ultra triple junction (UTJ) solar cells. It has three-axis stabilisation with thrusters and reaction wheels and Li-Ion batteries.

The satellite includes an antenna with three deployable single offset reflectors with dimensions of 2.4m, 2.6m, and 2.5m x 2.7m.

The propulsion system that will be used for transfer orbit is liquid bi-propellant and monopropellant on-orbit system. The satellite will generate approximately 5.0kW of payload power in orbit and has a design life span of more than 15 years.

Satellite bus platform

The satellite will be based on GEOStar-2 platform developed by Orbital ATK. The satellite bus is ideal for low-to-medium power satellites as it is designed to carry 1,000W to 5,550W payload class. Thaicom 8 is the 36th satellite based on the GEOStar platform.

Launch vehicle details

"The satellite will initially be put into the targeted geostationary transfer orbit (GTO), where it will be tested in a 30-day testing phase, which will be followed by in-orbit activation and reaching its final orbital slot."

The satellite will be launched on the modified Falcon 9 1.2V rocket, which has improved thrust control and tanks filled with super-cooled propellant. The launch operations are being carried out by SpaceX.

The satellite will initially be put into the targeted geostationary transfer orbit (GTO), where it will be tested in a 30-day testing phase, which will be followed by in-orbit activation and reaching its final orbital slot. The satellite will be launched from Cape Canaveral Air Force Station located in Florida.

Communication capabilities of Thaicom 8 satellite

The satellite will be equipped with 24 active Ku-band transponders, which will deliver broadcast and data services for Thailand, India and Africa. It will provide support to the growing broadcast industry in Thailand.

Ground transportation

Thaicom PLC will take over the control of the Thaicom 8 satellite after the initial 30-day testing by Orbital ATK.

Kratos Integral Systems International (Kratos ISI) was awarded two contracts to provide ground systems including a satellite control centre (SCC) and a tracking, telemetry and command (TT&C) station for the satellite in May 2015.

The SCC will be based on Kratos ISI's Epoch command and control and Oasys flight dynamics solutions. Kratos ISI's UK team will provide the TT&C earth station, which will include 11m C-Band turning head antenna with a monopulse tracking system and a fully-redundant radio frequency (RF) system.