Satellite bus
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Communications satellite bus and payload module
A satellite bus or spacecraft bus is a general model on which multiple-production satellite spacecraft are often based. The bus is the infrastructure of the spacecraft, usually providing locations for the payload (typically space experiments or instruments).
Bus-derived satellites are opposed to one-off, or specially produced satellites. Bus-derived satellites are usually customized to customer requirements, for example with specialized sensors or transponders, in order to achieve a specific mission.[1][2][3][4]
They are commonly used for geosynchronous satellites, particularly communications satellites, but are also used in spacecraft which occupy lower orbits, occasionally including low Earth orbit missions.
Contents
1 Examples
2 Components
3 See also
4 References
5 External links
Examples
(only commercially available models)
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's I-1K, I-2K, I-3K, I-4K, I-6K, and Indian Mini Satellite bus
NASA Ames MCSB
SSL 1300
Orbital ATK GEOStar
Mitsubishi Electric DS2000
Spacecraft Bus (JWST) (Spacecraft bus of the James Webb Space Telescope)
Components
A bus typically consists of the following subsystems:[6]
Command and Data Handling (C&DH) System
Communications system and antennas
Electrical Power System (EPS)- Propulsion
- Thermal control
Attitude Control System (ACS)
Guidance, navigation, and control (GNC) System- Structures and trusses
Life support (for crewed missions).
See also
- Comparison of satellite buses
- Service module
- Satellite
References
^ "TU Delft: Spacecraft bus subsystems". Lr.tudelft.nl. Retrieved 2014-04-23..mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
^ "Spacecraft Systems". Braeunig.us. Retrieved 2014-04-23.
^ "The James Webb Space Telescope". Jwst.nasa.gov. Retrieved 2014-04-23.
^ "Antrix Corporation Ltd - Satellites > Spacecraft Systems & Sub Systems". Antrix.gov.in. 2009-09-24. Retrieved 2014-04-23.
^ "Status of the JWST Sunshield and Spacecraft" (PDF).
^ Satellite Bus Subsystems Archived 2012-09-05 at the Wayback Machine., NEC, accessed 25 August 2012.
External links
- Satellite Glossary
- JWST Observatory: The Spacecraft Bus
- Spitzer's Spacecraft Bus
- Gunter's Space Page: Spacecraft buses
