SUMBANDILASAT LAYOUT 4 7 12 9 21 28 27 25 19 1 30 18 29 13 23 15 26 32 20 5 31 16 3 33 17 14 8 6 Experiment Payload ADCS System 1 4 Magnetic Field Probes Measures magnetic field 7 Magnetometer Measures magnetic field of earth Three Axis Coarse Sun Sensor Measure the angle of the sun with respect to the satellite orientation 10 Attitude Control System Attitude and Orbit determination and control system 13 16 Fluxgate Magnetometer Electronics Signal conditioning of measurements 19 Star Camera Attitude sensing with help of stars 25 22 On board Computer and Viewfinder Housing on-board computer and viewfinding functionality Ground Support Equipment used to test the satellite UHF Center Fed Dipole Antenna Transmits telemetry signals from the satellite to the ground station 28 31 VHF Helix Antenna Receives uplink telecommand signals from ground station Lithium-Ion Batteries Storage of energy Main Payload Comms System 2 5 Electric Field Probes Measures electric field 8 Three Magnetotorquer Rods Momentum dumping and control 11 One Axis Coarse Sun Sensor Measure the angle of the sun with respect to the satellite orientation Horizon Sensor Determines the centroid of the Earth w.r.t. the Satellite. 14 17 Reaction Wheels Z axis and Y axis - orientation/ momentum control 20 Cold Gas Propulsion Unit Used for orbit maintenance 23 Camera Controller and Mass Storage Interfaces to the telescope electronics and contains the mass memory storage of the satellite Video Exciter Unit Generates video payload transmission signal 26 29 S-band Transmission Front End Unit Amplifies, measures and filters data and video payload transmitter signals S-band Transmission Front End Unit Amplifies, measures and filters data and video payload transmitter signals 32 Solar Panel Photovoltaic Cells Satellite’s main energy source Structure Power System 3 Experiment Data Board Electronics for science experiment payload 6 GPS Receiver Antenna Provide orbit position and velocity measurements obtained from GPS satellite constellation 9 12 Magnetometer - resistive Measures magnetic field of earth Fine Sun Sensor Determines the centroid of the Sun w.r.t. the Satellite. 15 18 Gyroscopes Attitude estimation Main imager payload Take 6 colour, 6.25m Images of the earth 21 24 PAL Video Cameras View finding Satellite structure Skeleton for mounting of satellite components. (Black: thermal paint for passive thermal control) 27 VUCU Telecommand and telemetry communication between satellite and ground station 30 Data Exciter Unit Generates data payload transmission signal 33 Power Control Unit (PCU) Interfaces to batteries and solar panels GSE
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