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'''Indian Mini Satellite''' (IMS) is a family of modular<ref>{{cite web|url=http://www.iafastro.net/iac/archive/tree/IAC-12/B4/6A/IAC-12,B4,6A,4,x15289.brief.pdf|title=63rd International Astronautical Congress 2012 : 19th SYMPOSIUM ON SMALL SATELLITE MISSIONS (B4) : Generic Technologies for Small/Micro Platforms (6A)|website=Iafastro.net|access-date=10 August 2017}} - {{cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/s/saral|title=SARAL - eoPortal Directory - Satellite Missions|website=Directory.eoportal.org|access-date=10 August 2017}}</ref> mini [[satellite bus]]es developed by the [[Indian Space Research Organisation]] (ISRO).<ref>{{cite web |url=http://www.isro.org/newsletters/contents/nnrms/NNRMS%20Bulletin%202013.pdf |title=Archived copy |access-date=7 February 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140308041430/http://www.isro.org/newsletters/contents/nnrms/NNRMS%20Bulletin%202013.pdf |archive-date=8 March 2014 }}</ref><ref>{{Cite journal|last=Thyagarajan|first=K|last2=Raghava Murthy|first2=D.V.A.|date=3 June 2009|title=Micro- and mini-satellites of ISRO—technology and applications|journal=Acta Astronautica|volume=65|issue=9,10|pages=1375–1382|doi=10.1016/j.actaastro.2009.03.050|bibcode=2009AcAau..65.1375T}}</ref>

==Variants==
{|class="wikitable" style="margin: 1em auto 1em auto; width:75%; font-size:95%"
|+Indian Mini Satellite (Variants)
|- style="text-align:center; background:#BBB;"
|Feature
|IMS-1<ref>{{Cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/i/ims-1|title=IMS-1 - eoPortal Directory - Satellite Missions|website=directory.eoportal.org|language=en-US|access-date=2018-11-05}}</ref><ref name=":0">{{Cite journal|url=https://acadpubl.eu/jsi/2018-118-16-17/articles/17/18.pdf|title=Small Satellites in Inclined Orbits to Increase Observation Capability Feasibility Analysis|date=6 January 2018|journal=International Journal of Pure and Applied Mathematics|volume=118|issue=17|pages=273–288|archive-url=https://web.archive.org/web/20181104222747/https://acadpubl.eu/jsi/2018-118-16-17/articles/17/18.pdf|archive-date=4 November 2018|access-date=5 Nov 2018}}</ref>{{Predatory_open_access_publisher}}
|IMS-2<ref name=":0" /><ref>{{Cite web|url=https://mosdac.gov.in/Mycalval_new/docs/SARAL.pdf|title=SARAL - Satellite for Argos and AltiKa|website=MOSDAC|access-date=5 Nov 2018}}</ref>
|IMS-3 (Planned IMS-2 Derivative)<ref>{{Cite web|url=http://nrsc.gov.in/pdf/1.1.User%20Meet_NRSC_2015-01-21_Ver-2_Anna_durai.pdf|title=Earth Observation & Small Satellite Systems, User Interaction Meet 2015|last=Annadurai|first=Mylswamy|date=22 January 2015|website=NRSC.gov.in|archive-url=https://web.archive.org/web/20150327055110/http://nrsc.gov.in/pdf/1.1.User%20Meet_NRSC_2015-01-21_Ver-2_Anna_durai.pdf|archive-date=27 March 2015}}</ref>
|-
|Launch Mass
|{{Convert|100|kg|lbs}}
|{{Convert|450|kg|lbs}}
|{{Convert|450|kg|lbs}}
|-
|Maximum bus mass
|{{Convert|70|kg|lbs}}
|{{Convert|250|kg|lbs}}
|{{Convert|250|kg|lbs}}
|-
|Payload mass
|{{Convert|30|kg|lbs}}
|{{Convert|200|kg|lbs}}
|{{Convert|200|kg|lbs}}
|-
|Propellant
|{{Convert|3.5|kg|lbs}}
|{{Convert|21|kg|lbs}}
|
|-
|Design lifetime
|2 years
|5 years
|
|-
|Raw bus voltage
|28-33 Volts
|28-33 Volts
|28-42 Volts
|-
|Solar Array Power
|230 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° (all axis)
|± 0.1° (all axis)
|-
|SSR Storage
|16 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
|-
| rowspan="2" |Missions
|[[IMS-1]]<ref>{{cite web|url=http://www.isro.gov.in/Spacecraft/ims-1|title=IMS-1 - ISRO|website=isro.gov.in|access-date=28 October 2015}}</ref> [[Youthsat]]<ref>{{cite web|url=http://space.skyrocket.de/doc_sdat/youthsat.htm|title=YouthSat (IMS 1A)|website=Space.skyrocket.de|access-date=28 October 2015}}</ref> [[Microsat (ISRO)|Microsat-TD]]<ref>{{cite web|url=https://www.isro.gov.in/Spacecraft/microsat-0|title=Microsat|website=ISRO|access-date=12 January 2018}}</ref>
|[[SARAL]]<ref>{{cite news|url=http://www.isro.gov.in/Spacecraft/saral|title=SARAL - ISRO|access-date=28 October 2015|website=isro.gov.in}} - {{cite news|url=http://www.thehindu.com/opinion/editorial/old-faithful-does-it-again/article4456135.ece|title=Old Faithful does it again|access-date=28 October 2015|newspaper=[[The Hindu]]|date=2013-02-27}}</ref> [[ScatSat-1]]<ref>{{cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/s/scatsat-1|title=SCATSat-1 (Scatterometer Satellite-1)|website=Directory.eoportal.org|access-date=10 August 2017}}</ref> [[EMISAT]]<ref>{{cite web|url=http://space.skyrocket.de/doc_sdat/emisat.htm|title=EMISAT|work=Gunter's Space Page |first=Gunter |last=Krebs|access-date=24 January 2018}}</ref> [[Hyperspectral Imaging Satellite|HySIS]]
[[X-ray Polarimeter Satellite|XPoSat]] (Planned)
|
|-
|[[File:Indian Mini Satellite-1 (IMS-1).jpg|alt=|center|thumb|150x150px|IMS-1]]
|
|
|}

==See also==
{{Portal |Spaceflight}}
* [[Comparison of satellite buses]]
{{Clear}}

==References==
{{Reflist}}

{{ISRO Satellite Bus}}

[[Category:Indian Space Research Organisation]]
[[Category:Satellite buses]]

{{India-spacecraft-stub}}

Indian Mini Satellite bus - Revision history

>SdkbBot at 18:38, 29 June 2021