Английская Википедия:BSAT-2b
Шаблон:Short description Шаблон:Use American English Шаблон:Use mdy dates Шаблон:Infobox spaceflight
BSAT-2b, was a geostationary communications satellite ordered by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was designed to be stationed on the 110° East orbital slot along its companion BSAT-2a where it would provide redundant high definition direct television broadcasting across Japan.[1][2]
But the Ariane 5G rocket had an anomaly during its July 12, 2001 launch. It left BSAT-2b stranded in an orbit too low for its propulsion system to compensate and the spacecraft was written off.[3][4][5] BSAT ordered BSAT-2c immediately to replace it.[6] It decayed and burned in the atmosphere on January 28, 2014.[5][7]
Satellite description
BSAT-2b was designed and manufactured by Orbital Sciences Corporation on the STAR-1 satellite bus for B-SAT. It had a launch mass of Шаблон:Convert, a dry mass of Шаблон:Convert, and a 10-year design life.[8] As all four STAR-1 satellites, it had a solid rocket Star 30CBP apogee kick motor for orbit raising, plus Шаблон:Convert of propellant for its liquid propellant station keeping thrusters.[2][9][10]
It measured Шаблон:Convert when stowed for launch. Its dual wing solar panels can generate 2.6 kW of power at the beginning of its design life, and span Шаблон:Convert when fully deployed.[8]
It has a single Ku band payload with four active transponders plus four spares with a TWTA output power of 130 Watts.[1][8]
History
In March 1999, B-SAT ordered from Orbital Sciences Corporation two satellites based on the STAR-1 platform: BSAT-2a and BSAT-2b.[6] This was the second order of the bus and the first since Orbital had acquired CTA Space Systems, the original developer.[9]
BSAT-2b was launched aboard an Ariane 5G at 23:58 UTC, July 12, 2001, from Guiana Space Center ELA-3.[3] It rode on the lower berth below Artemis. But the EPS upper stage had an anomaly and left the satellites on a 17,528 km × 592 km × 2.9° orbit, short of the planned 35,853 km × 858 km × 2.0°. While Artemis used its electric propulsion to make up for the difference. But BSAT-2b Star 30CBP apogee kick motor could not make up for the orbital energy short fall and was written off.[4][5][6]
On January 28, 2014, BSAT-2b decayed from its orbit and burned in the atmosphere.[5][7]
References
Шаблон:Portal Шаблон:BSAT satellites Шаблон:Orbital launches in 2001
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- Английская Википедия
- Communications satellites in geostationary orbit
- Satellites using the GEOStar bus
- Spacecraft launched in 2001
- Satellite launch failures
- Communications satellites of Japan
- Satellites of Japan
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