SYSTEMS (jorge)

OPTIONS AND COMMENTARIES FOR ALL TEAMS Well i worked in SSETI-EXPRESS (SSETI proyect) it's the same that our want to do now
this mission had a relative successful

but I think that its systems were well thought....  this is a suggestion for the teams

ACDS
The Attitude Control and Determination System controls the attitude of the spacecraft using a pair of magnetorquers and a passive magnet and determines the attitude of the spacecraft using a magnetometer and a pair of sun-sensors

CAMERA

The camera uses CMOS technology and is capable of taking full colour pictures in the visual range at a ground resolution of about 100m per pixel, with an image size of 1280x1024 pixels. It will be used to take images of the Earth

EPS

The Electrical Power System supplies power from the solar cells to the other spacecraft subsystems and controls the spacecraft modes. The power supply to each of the other subsystem can be toggled, and excess power is stored in a Lithium-Ion battery to be used during eclipse

OBC

The On-Board Computer controls the spacecraft in Nominal Mode. It processes telecommands, samples and stores housekeeping data, controls the payloads and collects the payload data. The OBC is the "brain" of the spacecraft

PROPULSION

The Propulsion subsystem is a demonstration and characterisation payload, capable of controlling the attitude of the spacecraft using cold-gas thrusters. It has a central 6-litre tank filled with nitrogen initially at 300 bar, and is controlled by the Propulsion Instrument Control unit (sometimes also known as 'MAGIC')

S-BAND

The S-Band unit is the secondary communications system. It contains a microwave transmitter and TNC and is capable of 38400bps data downlink, or transponding audio from UHF via three patch antennas (S-Band ANT), acting as a voice repeater for radio amateurs

STRUCTURE

The primary spacecraft structure is composed of aluminium honeycomb panels, providing strong but lightweight mounting points for the other subsystems. The secondary structure consists of thin aluminium lateral panels which serve as mounting points for the solar cells and sun-sensors

UHF

The Ultra-High Frequency unit is the primary communications system of the spacecraft. It contains a radio transmitter and receiver, and also a TNC. It is capable of 9600bps uplink and downlink via a simple monopole antenna

I think that we can start of this configuration this way to be able to determine definitive the payload or although to have one first vision of what will be the satellite (payload and bus) Posted by jorge alberto soliz torrico in General at 20070305 Comments[0]