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SwissCube-1 is a Swiss satellite operated by École Polytechnique Fédérale de Lausanne (EPFL). The spacecraft is a single unit CubeSat, which was designed to conduct research into nightglow within the Earth's atmosphere, and to develop technology for future spacecraft.[3] It has also been used for amateur radio. It was the first Swiss satellite to be launched.[4]

This article uses bare URLs, which are uninformative and vulnerable to link rot. (August 2022)

SwissCube-1

Mission type	Atmospheric Technology
Operator	EPFL
COSPAR ID	2009-051B
SATCAT no.	35932
Website	swisscube.epfl.ch
Mission duration	3-12 months planned 84+ months achieved[1]
Spacecraft properties
Spacecraft type	1U CubeSat
Launch mass	1 kilogram (2.2 lb)
Start of mission
Launch date	23 September 2009, 06:21 (2009-09-23UTC06:21Z) UTC
Rocket	PSLV-CA C14
Launch site	Satish Dhawan FLP
Contractor	ISRO
Orbital parameters
Reference system	Geocentric
Regime	Sun-synchronous
Perigee altitude	710 kilometres (440 mi)[2]
Apogee altitude	722 kilometres (449 mi)[2]
Inclination	98.39 degrees[2]
Period	98.97 minutes[2]
Epoch	24 January 2015, 04:38:10 UTC[2]

History

SwissCube-1 was launched by the Indian Space Research Organisation aboard the Polar Satellite Launch Vehicle, serial number C14, flying in the Core Alone, or PSLV-CA, configuration.[5] The launch took place from the First Launch Pad at the Satish Dhawan Space Centre, at 06:21 UTC on 23 September 2009.[6] SwissCube-1 was a secondary payload aboard the rocket, which deployed the Oceansat-2 satellite. Five other secondary payloads were flown aboard the rocket; BeeSat, UWE-2, ITU-pSat1, Rubin 9.1 and Rubin 9.2.[7][8]

SwissCube-1 is operating in a sun synchronous orbit[9] with an apogee of 752 kilometres (467 mi), a perigee of 726 kilometres (451 mi) and 98.28 degrees of inclination to the equator. It has an orbital period of 98.5 minutes.

Its mission was expected to last between three and twelve months.[7] The mission was extended an additional 18 months in February 2010 and an additional ground command facility was added.[10] It took its first picture on 18 February 2011 and its first airglow picture on 3 March 2011.[11]

On 2 December 2011, EPFL ended the SwissCube project and turned over control of the satellite to amateur radio operators.[12] As of November 2016^[update] SwissCube is still operational after seven years in space.[13]

In anticipation of its future "debris" status in light of the slowly degrading lithium-ion batteries, the Clean Space One project was launched in 2012 to provide a spacecraft able to catch SwissCube-1 and remove it from orbit in the 2020 horizon.[14]

Software architecture[15]

• The COM (communication), PL (payload), ADCS (attitude and orientation), and EPS (energy) subsystems all have a MSP430F1611 microcontroller
• The CDMS (on board computer) has an ATMEL ARM AT91M55800A

These microcontrollers used two I²C buses to communicate : one main bus (all subsystems) and one fallback bus (only EPS and COM). The cubesat had 4 operation modes : recovery (not enough power to work), safe (minimum subsystems running), and two standard modes (all subsystems are working nominally).

See also

• 2009 in spaceflight
• List of CubeSats

References

External links

• Media related to SwissCube-1 at Wikimedia Commons

На других языках

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[de] SwissCube

SwissCube ist der erste Schweizer Satellit.[2] Der Satellit wurde von 2006 bis 2007 in einem Gemeinschaftsprojekt verschiedener Schweizer Hochschulen nach dem Cubesat-Standard entwickelt und komplett in der Schweiz gebaut.

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- [en] SwissCube-1

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[ru] SwissCube

SwissCube — первый спутник, полностью построенный в Швейцарии. Он был разработан на базе платформы CubeSat в The École Polytechnique Fédérale de Lausanne (EPFL) в сотрудничестве с рядом швейцарских инженерных школ, университетов и частных фирм. Представляет собой куб с ребром 10 см и весом 820 граммов.

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