SACI-1

SACI-1
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[]

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[]

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[]

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[]

^ 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[]

SACI-1 Gunter's Space Page

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[1] 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.

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