Indian Mini Satellite bus

Indian Mini Satellite (IMS) is a family of modular[1] mini satellite buses developed by the Indian Space Research Organisation (ISRO).[2][3]

Variants
Indian Mini Satellite (Variants)
Feature IMS-1[4][5][6][7] IMS-2[6][8] IMS-3 (Planned IMS-2 Derivative)[9]
Launch Mass 100 kilograms (220 lb) 450 kilograms (990 lb) 450 kilograms (990 lb)
Maximum bus mass 70 kilograms (150 lb) 250 kilograms (550 lb) 250 kilograms (550 lb)
Payload mass 30 kilograms (66 lb) 200 kilograms (440 lb) 200 kilograms (440 lb)
Propellant 3.5 kilograms (7.7 lb) 21 kilograms (46 lb)
Design lifetime 2 years 5 years
Raw bus voltage 28-33 Volts 28-33 Volts 28-42 Volts
Solar Array Power 330 Watts (EOL) 675 Watts (EOL)
850 Watts (BOL)		 850 Watts (BOL)
Payload power 30 Watts (Continuous)
70 Watts (Duty Cycle)		 250 Watts (Continuous)
600 Watts (Duty Cycle)		 250 Watts (Continuous)
400 Watts (Duty Cycle)
Attitude Control 3-axis stabilized
Four Reaction Wheels
Single 1N thruster		 3-axis stabilized
Four Reaction Wheels
Mono-propellant RCS
Four 1N thrusters
Four 0.2N thrusters
Pointing Accuracy ±0.1° (3σ) (all axes) ± 0.1° (all axes) ± 0.1° (all axes)
SSR Storage 32 Gb 32 Gb (SDRAM)
256 Gb (Flash Memory)		 32 Gb (SDRAM)
256 Gb (Flash Memory)
Payload data storage ≤ 16 Gb ≤ 32 Gb
Downlink ≤ 8 Mbit/s DL rate ≤ 105 Mbit/s DL rate ≤ 160 Mbit/s DL rate
Missions IMS-1[10]
Youthsat[11]
Microsat-TD[12]		 SARAL[13]
ScatSat-1[14]
EMISAT[15]
HySIS

XPoSat (Planned)
IMS-1

See also

References
  1. "63rd International Astronautical Congress 2012 : 19th SYMPOSIUM ON SMALL SATELLITE MISSIONS (B4) : Generic Technologies for Small/Micro Platforms (6A)" (PDF). Iafastro.net. Retrieved 10 August 2017.
    - "SARAL - eoPortal Directory - Satellite Missions". Directory.eoportal.org. Retrieved 10 August 2017.
  2. "Archived copy" (PDF). Archived from the original (PDF) on 8 March 2014. Retrieved 7 February 2014.{{cite web}}: CS1 maint: archived copy as title (link)
  3. Thyagarajan, K; Raghava Murthy, D.V.A. (3 June 2009). "Micro- and mini-satellites of ISRO—technology and applications". Acta Astronautica. 65 (9, 10): 1375–1382. Bibcode:2009AcAau..65.1375T. doi:10.1016/j.actaastro.2009.03.050.
  4. "IMS-1 - eoPortal Directory - Satellite Missions". directory.eoportal.org. Retrieved 2018-11-05.
  5. "Interest Exploratory Note: Indian Mini Satellite-1 (IMS-1) Bus" (PDF). 15 March 2022. Archived (PDF) from the original on 15 March 2022. Retrieved 15 March 2022.
  6. "Small Satellites in Inclined Orbits to Increase Observation Capability Feasibility Analysis" (PDF). International Journal of Pure and Applied Mathematics. 118 (17): 273–288. 6 January 2018. Archived from the original (PDF) on 4 November 2018. Retrieved 5 Nov 2018.
  7. "Interest Exploratory Note Indian Mini Satellite-1 (IMS-1) Bus" (PDF). 15 March 2022.
  8. "SARAL - Satellite for Argos and AltiKa" (PDF). MOSDAC. Retrieved 5 Nov 2018.
  9. Annadurai, Mylswamy (22 January 2015). "Earth Observation & Small Satellite Systems, User Interaction Meet 2015" (PDF). NRSC.gov.in. Archived from the original (PDF) on 27 March 2015.
  10. "IMS-1 - ISRO". isro.gov.in. Archived from the original on 10 September 2017. Retrieved 28 October 2015.
  11. "YouthSat (IMS 1A)". Space.skyrocket.de. Retrieved 28 October 2015.
  12. "Microsat". ISRO. Archived from the original on 25 January 2018. Retrieved 12 January 2018.
  13. "SARAL - ISRO". isro.gov.in. Archived from the original on 31 July 2017. Retrieved 28 October 2015.
    - "Old Faithful does it again". The Hindu. 2013-02-27. Retrieved 28 October 2015.
  14. "SCATSat-1 (Scatterometer Satellite-1)". Directory.eoportal.org. Retrieved 10 August 2017.
  15. Krebs, Gunter. "EMISAT". Gunter's Space Page. Retrieved 24 January 2018.


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