EOS-07 MISSION Home /EOS-07 MISSION

Feb 22, 2023

EOS-07 MISSION

Mission Objectives

  • Design and develop a micro satellite as a payload for SSLV-D2 Launch Vehicle.
  • Design and develop payload instruments compatible to micro satellite bus and with new technologies that are required for future operational satellites.
  • Design and develop a micro satellite accommodating new technology Payloads in a quick turn-around time.

Spacecraft Configuration: -

Mission Parameter:

  • Orbit Altitude - 450 km
  • Lift off mass ~ 157 kg
  • Mission Life ~ 1 year

Structure:

  • Cuboid consists of 6 Aluminum Honeycomb Decks. Top and Bottom decks are connected with 4 staggered cross ribs and 4 closing vertical decks.

Structure:

  • Cuboid consists of 6 Aluminum Honeycomb Decks. Top and Bottom decks are connected with 4 staggered cross ribs and 4 closing vertical decks.

Thermal Control:

  • Passive thermal control with Optical Solar Reflector, Multi-Layer Insulation, Thermal interface material, etc.

Mechanism:

  • Frangi bolt actuator based Solar Panel deployment Propulsion:
  • Monopropellant system; 5kg of Hydrazine fuel

Power:

  • Miniaturised power electronics and distribution package
  • Li-ion battery of 27.2 Ah capacity
  • Power generation of 357 W at EOL, equinox

Sensors:

  • micro Star Sensor (mSS)
  • 4π Sun Sensor (4πSS)
  • micro-Inertia Reference Unit (mIRU)
  • Magnetometer (Mag)

Actuators:

  • 1N Thrusters
  • 1Nms/ 0.02Nm Reaction Wheels
  • 20 A.m2 Magnetic Torquers

AOCS:

  • Pointing accuracy – 0.1° (3σ)
  • Drift rate – 7.5e-4°/s

Onboard Computer:

  • Telecommand and house-keeping Telemetry, Sensors Processing Electronics, Attitude and Orbit Control and Thermal Management.
  • MIL STD 1553B protocol for interfacing with other sub-systems.

RF System:

  • S-Band Telemetry Transmitter
  • S-Band Telecommand Receiver
  • 12 channel SPS, 15m location accuracy, 0.15m/s velocity accuracy (3 - sigma)
  • X-Band Data Transmitter

Data Handling & Storage:

  • Integrated Data Handling and storage of 32Gb

Major Payloads: -

mmWave Humidity Sounder (MHS)
Parameter Specification
Swath (km) 1050km
Spatial resolution @ Nadir 10km (20km @ swath edge)
Integration Time 4ms
Scan Rate 50rpm
Mass 26kg
Power 55W
Data Rate 1Mbps
Spectrum Monitoring Payload (SMP)
Parameter Specification
Input Frequency bands L-Band & S-Band
Output Interface LVDS 3-wire interface
Mass ~13kg
Power ~35W
Data Rate 2Mbps