SACI-1
 A SACI satellite being tested | |
| Mission type | Earth orbiter |
|---|---|
| Operator | INPE |
| COSPAR ID | 1999-057B |
| SATCAT no. | 25941 |
| Spacecraft properties | |
| Manufacturer | INPE |
| Launch mass | 60 kilograms (130 lb) |
| Power | 150 watts |
| Start of mission | |
| Launch date | October 14, 1999 |
| Rocket | Long March 4B |
| Launch site | Taiyuan LC-7 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Semi-major axis | 7,098 kilometres (4,410 mi) |
| Eccentricity | 0.00084 |
| Perigee altitude | 733 kilometres (455 mi) |
| Apogee altitude | 745 kilometres (463 mi) |
| Inclination | 98.6° |
| Period | 99.6 minutes |
| Epoch | Planned |
The SACI-1 was a microsatellite of scientific applications, designed, developed, constructed and tested by Brazilian technicians, engineers and scientists working in INPE (National Institute of Space Research).[1] SACI-1 was launched on October 14, 1999, from the Taiyuan Satellite Launch Center, China, by means of a Long March 4B rocket, as a secondary payload at the CBERS-1 launch.
Features
[edit]The "SACI" satellites are composed of a multi-mission platform and a set of experiments that constitute the payload. These satellites had the cooperation of several Brazilian and foreign institutions.
The SACI-1 scientific satellite has the following characteristics:
- Format: parallelepiped with 60 cm x 40 cm x 40 cm
- Mass: 60 kg
- Orbit: heliosynchronous
- Stabilization: by rotation (6 rpm)
- Precision: 1 degree
Energy supply
[edit]- Solar Cells: Gallium Arsenide (AsGa)
- Dimensions: 3 panels of 57 x 44 cm
- Efficiency: 19%
- Power output: 150W
- Nickel Cadmium (NiCd) Battery Cells
- Voltage: 1.4 V
- Capacity: 4.5 Ah
- Remote control rate: 19.2 kbit/s
- Transmission rate: 500 kbit/s
- Antennas of edge: 2 of transmission and 2 of reception, type Microstrip
- Operating frequency telemetry / remote control: 2,250 GHz / 2,028 GHz
- Receiving antenna in Soil: 3.4 m in diameter
Mission
[edit]Although the launch went smoothly, and the intended orbit reached, SACI-1 did not come into operation, probably due to a failure in the solar panel control system.
References
[edit]- ^ Sousa, Fabiano. Desenvolvimento de satélites e plataformas espaciais no INPE no período 1961–2007 Archived 2014-02-02 at the Wayback Machine (PDF). INPE. Retrieved 31 March 2017.
External links
[edit]- SACI-1 Gunter's Space Page
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