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CAST3000
The CAST3000 satellite bus was designed for high resolution optical imaging and radar imaging missions in sun synchronous orbit. It could be adapted to other missions. The bus had a mass of 400 kg and could support payloads of up to 400 kg requiring 1100 W of power.

Status: Operational 2013. First Launch: 2013-07-19. Last Launch: 2013-07-19. Number: 1 .

The CAST3000 was a small satellite bus providing the necessary precision, agility, automation, life-span and reliability to support high resolution and agile imaging missions. The bus could rapidly perform a wide range of attitude maneuvers with free space pointing capacity. It was capable of multi-mode imaging (including area target imaging, continuous strap imaging, composite strips imaging and single orbit stereo imaging. It supported S/X data transmission; had the capability of automatic onboard mission management and scheduling using an integrated onboard electronic system. The bus achieved a 50-60% net payload and a 5-year design life.

Technical Specifications
Bus mass: 300-400kg
Payload capacity: >380kg
Orbit type: low, medium and high orbits
Attitude control ability: 3-axis stabilization,
Pointing mode: earth pointing or inertial space pointing
Attitude maneuver ability: maneuver range: +-45 deg (along roll and pitch axes)
Stereo speed: 5 deg within 11s, 15 deg within 16s, 30 deg within 21s, 45 deg within 25s, 60 deg within 30s, 90 deg within 35s (including stabilization time, along roll and pitch axes)
Attitude measurement accuracy: < 0.001 deg (3-axis 3-sigma);
Attitude pointing accuracy: < 0.05 deg (3-axis 3-sigma);
Attitude stability: < 0.0005/s (3-axis 3-sigma)
Orbit control: hydrazine propellant: 32.5 kg; 130 kg optional
Solar array output power: 945 - 1148 W (EOL)
Designed lifetime: >5 years



Subtopics

SY 7A, 7B Earth observation satellite built by DFH Satellite Co. Ltd of CAST, China. Launched 2013. Used CAST3000 bus.

GaoJing-1 01, 02, 03, 04 (SuperView 1) Null

Family: Surveillance. Country: China. Launch Vehicles: Chang Zheng 4C.

2013 July 19 - . 23:37 GMT - . Launch Site: Taiyuan. Launch Pad: xxx. LV Family: CZ. Launch Vehicle: Chang Zheng 4C.
2016 December 28 - . 03:23 GMT - . Launch Site: Taiyuan. LV Family: CZ. Launch Vehicle: Chang Zheng 2D.

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