UNOSAT was a Brazilian scientific applications
nanosatellite
A small satellite, miniaturized satellite, or smallsat is a satellite of low mass and size, usually under . While all such satellites can be referred to as "small", different classifications are used to categorize them based on mass. Satellites ca ...
, designed, developed, built and tested by researchers and students working at the
Northern Paraná University.
Features
The primary objective of UNOSAT was to transmit voice messages and a telemetry data packet in
AX25 protocol.
The UNOSAT scientific satellite had the following characteristics:
Satélites desenvolvidos no Brasil serão lançados ainda neste ano
Inovação Tecnológica. 30 April 2003. Retrieved 03 April 2017.
General
* Format: parallelepiped with 46 cm x 25 cm x 8.5 cm
* Mass:
* Orbit: heliosynchronous
* Stabilization: by rotation at 120 rpm
* Precision: 1 degree
* Altitude:
Payload
The instrumentation shipped in UNOSAT was basically composed of: data collectors and transmitters.
The following data would be transmitted to earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
:
* Voice message identifying the satellite
* Telemetry
Telemetry is the in situ collection of measurements or other data at remote points and their automatic transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek roots ''tele'', "remote", an ...
* Temperature of solar panels
* Rechargeable battery temperatures
* Temperature of the transmitter and the on-board computer
* Battery voltage
Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to ...
* Centripetal acceleration
Mission
As UNOSAT was planned to be launched as a secondary payload along with the SATEC satellite and it would be impossible for the launcher to put them into distinct orbits, both satellites were mechanically connected, although there was electrical and telemetry autonomy between the two. That satellite was lost in the explosion of the VLS-1 V03
The 2003 Alcântara VLS accident was an accident during the Brazilian Space Agency's third attempt to launch the VLS-1 rocket, which was intended to launch two satellites into orbit. The rocket ignited on its launch pad at the Alcântara Launch ...
launch vehicle on August 23, 2003 in an explosion three days before the launch date. This event came to be known as accident of Alcantara.
References
External links
Lançamento do foguete em Alcântara VLS Unosat – UNOPAR
Gunter's Space Page
{{Brazil space program
Satellites of Brazil
2003 in spaceflight