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| Palapa B2 | |
|---|---|
| Name | Palapa B2 |
| Country | Indonesia |
| Operator | Indosat |
| Manufacturer | Hughes Space and Communications |
| Launch mass | 2,450 kg |
| Spacecraft type | HS-376 |
| Launch date | 1990-03-16 |
| Launch vehicle | Ariane 4 |
| Launch site | Kourou |
| Orbit | Geostationary |
| Longitude | 113°E |
Palapa B2 Palapa B2 was an Indonesian communications satellite launched in 1990 to expand regional telecommunications and broadcast services across Southeast Asia, linking with existing systems and international networks. Built by Hughes Space and Communications for Indosat, it formed part of the broader Palapa satellite series that traced back to early Indonesian efforts to modernize maritime and terrestrial communications infrastructure and to integrate with global satellite providers like Intelsat and regional operators such as AsiaSat and Measat. The mission reflected collaboration among aerospace companies, launch providers, and national agencies including operators from France and facilities in French Guiana.
Development of the satellite grew from Indonesia’s strategic investments following the initial Palapa series, influenced by earlier projects and international partnerships involving firms like Hughes Aircraft Company and suppliers linked to the United States Department of Defense procurement ecosystem. Indosat contracted Hughes Space and Communications, leveraging the HS-376 bus lineage which traced design elements to satellites like those produced for Satcom and Anik programs. The procurement and program execution invoked interactions with launch consortiums including Arianespace and regulatory coordination with organizations such as the International Telecommunication Union and regional entities exemplified by ASEAN communications initiatives. Financial and insurance arrangements engaged global underwriters and export credit frameworks related to transactions with vendors from United States and contractors influenced by standards from European Space Agency partners.
Palapa B2 used the spin-stabilized HS-376 spacecraft bus, a platform with heritage from satellites like Satcom F1 and series employed by operators including PanAmSat and Telesat. The satellite mass at launch was approximately 2,450 kg, featuring a cylindrical body, deployable reflectors, and a despun payload section to host transponders comparable to equipment used in Ku-band and C-band communications satellites operated by entities such as Eutelsat and Intelsat. Power generation relied on solar arrays and batteries consistent with designs from Hughes and avionics suppliers linked to programs like GOES and INSAT. Thermal control, attitude determination, and propulsion subsystems shared components and heritage with missions developed for companies like COMSAT and national programs including NASA and JAXA collaborations. Ground segment compatibility allowed interoperability with regional teleport operators and broadcast networks modeled on infrastructure examples from TVRI and private carriers in Jakarta.
The satellite was launched aboard an Ariane 4 vehicle from the Guiana Space Centre at Kourou in French Guiana, a site used by Arianespace for missions serving operators such as Eutelsat, Intelsat, and commercial customers like Inmarsat. The launch involved integration with payload adapters and mission management practices similar to those employed for missions serving Thailand, Malaysia, and international customers. Orbital injection targeted geostationary orbit at around 113° East, a slot coordinated through the International Telecommunication Union and regional frequency planning exercises comparable to negotiations among carriers such as Telkom Indonesia and neighboring administrations. Mission operations were overseen by Indosat in coordination with Hughes ground teams and Arianespace launch specialists.
In service, the satellite provided telecommunications, direct-to-home broadcast, and VSAT services across the Indonesian archipelago, servicing islands from Sumatra to Papua and connecting to hubs in Jakarta, Surabaya, and international nodes in Singapore and Kuala Lumpur. Its payload supported television broadcasters, maritime communications for fleets operating in the Strait of Malacca and Makassar Strait, and corporate networks for multinationals with operations grounded in ports like Tanjung Priok and export centers tied to commodities markets in Borneo. Traffic routing and capacity management interfaced with regional carriers and international gateways similar to arrangements seen with Telstra and BT Group interconnects. The satellite contributed to emergency communications during natural disasters, coordinating with agencies and relief organizations similar to roles played by satellites in events such as the 1992 Flores earthquake response and regional humanitarian coordination mechanisms.
Following its operational life, the satellite underwent end-of-life procedures consistent with geostationary disposal practices advocated by International Telecommunication Union recommendations and standards promoted by bodies such as United Nations Office for Outer Space Affairs. Maneuvers used residual propellant to transfer the spacecraft to a graveyard orbit above the geostationary belt, implementing guidelines similar to decommissioning steps taken for satellites from fleets like AsiaSat and Intelsat. Debris mitigation and long-term orbital stewardship efforts involved coordination with international registries and operators including Arianespace and insurers involved in the original program. The legacy of the platform informed subsequent procurements and technology transitions for Indosat and influenced regional capacity planning reflected in later satellites like those procured from manufacturers such as SSL and Thales Alenia Space.
Category:Communications satellites Category:1990 in spaceflight