Satellite bus

Asatellite bus(orspacecraft bus) is the main body and structural component of asatelliteorspacecraft,in which thepayloadand all scientific instruments are held.

Bus-derived satellites are less customized than specially-produced satellites, but have specific equipment added to meetcustomer requirements,for example with specializedsensorsortransponders,in order to achieve a specific mission.^[1]^[2]^[3]^[4]

They are commonly used forgeosynchronoussatellites, particularlycommunications satellites,but are also used in spacecraft which occupy lower orbits, occasionally includinglow Earth orbitmissions.

Examples[edit]

Diagram of the James Webb Space Telescope's spacecraft bus. The solar panel is in green and the light purple flats are radiator shades.^[5]

Some satellite bus examples include:

Boeing DS&S 702
Lockheed Martin Space Systems A2100
Alphabus
INVAP ARSAT-3K
Airbus D&S Eurostar
ISRO'sI-1K,I-2K,I-3K,I-4K,I-6K,andIndian Mini Satellite bus
NASA Ames MCSB
SSL 1300
Orbital ATK GEOStar
Mitsubishi Electric DS2000
Spacecraft busof theJames Webb Space Telescope
SPUTNIX TabletSat
SPUTNIXOrbiCraft-Pro

Components[edit]

A bus typically consists of the following subsystems:^[6]

Command and data handling(C&DH) system
Communications systemandantennas
Electrical power system(EPS)
Propulsion
Thermal control
Attitude control system(ACS)
Guidance, navigation, and control(GNC) system
Structures and trusses
Life support(forcrewed missions).

References[edit]

^"TU Delft: Spacecraft bus subsystems".Lr.tudelft.nl. Archived fromthe originalon 2016-03-03.Retrieved2014-04-23.
^"Spacecraft Systems".Braeunig.us.Retrieved2014-04-23.
^"The James Webb Space Telescope".Jwst.nasa.gov.Retrieved2014-04-23.
^"Antrix Corporation Ltd - Satellites > Spacecraft Systems & Sub Systems".Antrix.gov.in. 2009-09-24. Archived fromthe originalon 2014-02-20.Retrieved2014-04-23.
^"Status of the JWST Sunshield and Spacecraft"(PDF).
^Satellite Bus Subsystems Archived2012-09-05 at theWayback Machine,NEC, accessed 25 August 2012.

External links[edit]

[1] "TU Delft: Spacecraft bus subsystems".Lr.tudelft.nl. Archived fromthe originalon 2016-03-03.Retrieved2014-04-23.

[2] "Spacecraft Systems".Braeunig.us.Retrieved2014-04-23.

[3] "The James Webb Space Telescope".Jwst.nasa.gov.Retrieved2014-04-23.

[4] "Antrix Corporation Ltd - Satellites > Spacecraft Systems & Sub Systems".Antrix.gov.in. 2009-09-24. Archived fromthe originalon 2014-02-20.Retrieved2014-04-23.

[statusupdate1-5] "Status of the JWST Sunshield and Spacecraft"(PDF).

[6] Satellite Bus Subsystems Archived2012-09-05 at theWayback Machine,NEC, accessed 25 August 2012.

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Examples[edit]

Components[edit]

See also[edit]

References[edit]

External links[edit]