ARSAT-1

ARSAT-1

ARSAT-1 in INVAP.
Mission type Communication
Operator AR-SAT
COSPAR ID 2014-062B
SATCAT № 40272
Mission duration 15 years
Spacecraft properties
Spacecraft ARSAT-1
Bus ARSAT-3K
Manufacturer INVAP
Thales Alenia Space
Launch mass 2,985 kilograms (6,581 lb)
Start of mission
Launch date 16 October 2014, 21:43 (2014-10-16UTC21:43Z) UTC
Rocket Ariane 5ECA
Launch site Kourou ELA-3
Contractor Arianespace
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 72° West
Perigee 35,787 kilometres (22,237 mi)[1]
Apogee 35,799 kilometres (22,244 mi)[1]
Inclination 0.02 degrees[1]
Period 1436.13 minutes[1]
Epoch 24 January 2015, 05:32:19 UTC[1]
Transponders
Band 24 IEEE Ku band
Coverage area Southern South America

ARSAT-1 Mission Logo
ARSAT-1 Mission Logo

ARSAT Satellite Fleet
← Nahuel 1A ARSAT-2 →

ARSAT-1 is a geostationary communications satellite operated by AR-SAT and built by the Argentine company INVAP.[2] ARSAT-1 was launched into orbit on October 16, 2014 from French Guiana alongside Intelsat-30 satellite using an Ariane 5 rocket.[3][4] It is expected to be located at 72° West longitude geostationary slot. ARSAT-1 is the first geostationary satellite built in Latin America. Total cost of the satellite is 270 millon US dollars.[5]

ARSAT-1 carries a total of 24 IEEE Ku band (NATO J-band) transponders. Twelve will be operating at 36 MHz, eight at 54 MHz and four at 72 MHz, for a total bandwidth of 1152Mhz.[6][7] It will offer a wide range of telecommunications, data transmission, telephone and television services mainly across all of Argentina, Chile, Uruguay and Paraguay including direct broadcast TV in the ISDB-S standard.[8][9]

Description

The ARSAT-1 is the first flight model of the ARSAT-3K satellite bus developed by INVAP for ARSAT S.A..[10] It is a small (around 3 t (3.3 tons) at launch) platform with a 350 kg (770 lb) maximum payload mass and 3.5 kW of payload power consumption at the satellite end of life. It uses an integrated chemical propulsion system supplied by EADS Astrium for both orbit raising and station keeping.[10]

It's Ku band communication payload was supplied by Thales Alenia Space. It is a composed by twelve 36Mhz transponders, eight of 54Mhz and four of 72Mhz, for a total bandwidth of 1152Mhz or 32 TPE.[7]

History

In April 26, 2006, the Argentine Federal Law 26.092 creates ARSAT S.A.. By section 8 of said law the company is given the right to exploit the 81° West orbital slot. By Section 4 of the company's constitution, it is mandated to build in the country and operate a communication satellite.[11] By the Decree 626/2007 of the National Communications Commission published on May 30, 2007, the rights to the 71.8° West orbital slot is transferred from Nahuelsat to ARSAT S.A.[12] On August 28, 2008, ARSAT S.A. signs the order for the ARSAT-1 satellite with INVAP.[13] On December 10, 2008, INVAP and ARSAT S.A. successfully performed the Preliminary Design Review for the satellite design.[14]

On September 8, 2009 ARSAT announced that Thales Alenia Space had been selected to supply the communication payload of the satellite and that Astrium would supply the hardware for the onboard computer, the central cylinder and some of the propulsion subsystems.[15] On September 8, 2010, Honeywell announces that it had received a $2.4 million order to supply the reaction wheels and the MIMU for the satellite.[16]

On April 2010, ARSAT announced that Arianespace would launch ARSAT-1 from the Guiana Space Centre.[17] On February 21, 2013 the mating of the ARSAT-3K satellite bus and the payload module was successfully completed.[18]

On October 2013 the environmental testing campaign was started with the month long thermal vacuum chamber tests. It went through a series of mass properties measures before going into the vibration testing in January.[19] On February 10, 2014, ARSAT-1 successfully passed the vibration environment simulation on the CEATSA shacker. It then performed a series of sound environment simulations that assured that the satellite would survive the launch environment.[20]

It later went though an electromagnetic compatibility testing and later the communication payload radio emission properties were tested to certify that it adhered to the specification.[19] On July 7, 2014, it was announced that the satellite had passed all tests and was ready for packaging and transport.[21]

On April 1, 2014, the insurance policy for both ARSAT-1 and ARSAT-2 was signed between ARSAT S.A. and the national bank insurance company. It was an innovative policy which included two satellites and covered the whole expected life, instead of the usual launch plus first year of operations. It enabled ARSAT to achieve substantially lower costs than what they could otherwise get for an unflown design.[22]

Between August 11 and 12, 2014, the satellite was packaged within its container.[23] And on August 31, it was loaded on an AN-124 which transported it to Kourou, on French Guiana.[24] On September 22, it finished the Launch System Electric Performance Test and was ready for integration with the Ariane-5 launcher.[25] On October 9, the satellite was mated in the lower berth of the launch vehicle.[26][27]

On October 16, 2014 at 21:43:52hs UTC, ARSAT-1 was successfully launched from the Guiana Space Centre ELA-3 by an Ariane-5ECA on its VA220 flight.[28] It flew along the Intelsat 30 which rode on the top berth of the fairing.[29] Two days later, on October 18, it performed the first of five orbital maneuvers using its 400 N (90 lbf) LAE to increase the perigee to 4,654 km (2,892 mi) and reduced the inclination to 3.5°.[30][31] On October 20 it performed the second orbital maneuver increasing its perigee to 14,050 km (8,730 mi) while reducing the inclination to 1.52°.[32][31] On October 22 the third maneuver increased the perigee to 29,000 km (18,000 mi) and reduced the inclination to less than 1°.[31][33] On October 24 and 25 it performed the fourth and fifth maneuvers finally reaching the geostationary orbit.[34][35]

On October 27 the LAE was disabled to prevent inadvertent ignitions. All further maneuvering would be done with thrusters. Next day the solar panels were fully deployed and latched, as well as the deployable antenna. The satellite was also put into Earth Attitude Mode where it automatically point towards Earth. While the component check out was performed, the satellite was let to drift to the 81° West orbital slot for the In Orbit Testing phase. It reached that slot on November 2.[35]

Between October 31 and November 18 the In Orbit Testing was successfully performed by ARSAT-1. It included testing of all subsystems, such as avionics, thermal management, power supply system and payload. It required slight attitude changes to validate the wave and power characteristics of the satellite signal. It successfully passed all tests finally validating the spacecraft performance.[36]

On December 13, ARSAT-1 performed its first public transmission from its final 71.8° West position. While the satellite was finally commissioned for operations, the migration of clients from AMC-6 to ARSAT-1 was expected to take many months.[37] On May 12, 2015, ARSAT S.A. announced that ARSAT had successfully passed its first eclipse season between February 26 and April 13. It was a very particular season since the Earth and Moon eclipses were combined in such a way to make one of the longest eclipses of the XXI century (for that geostationary slot). This constituted the last technical hurdle to test since it stressed to the maximum requirement the battery and thermal management subsystems.[38]

On May 20, 2015, ARSAT S.A. announced that thanks to the high efficiency of the orbital maneuvers, the expected service life of ARSAT-1 was extended to 18 years. The orbit raising maneuvers had required less propellant (67%) than expected (80%) and allotting that fuel to station keeping would enable the spacecraft to stay in orbit for 18 years, should no component failure require its early retirement.[10][39] It was further stated that the migration of clients from AMC-6 to ARSAT-1 had been performed for 96% of clients, and that the satellite utilization was 76%.[10]

See also

References

  1. 1 2 3 4 5 "ARSAT 1 Satellite details 2014-062B NORAD 40272". N2YO. 24 January 2015. Retrieved 25 January 2015.
  2. ↑ "Satélites ARSAT". INVAP website. Retrieved 18 August 2015.
  3. ↑ "Se realizó con éxito un nuevo ensayo de las pruebas del lanzador de satélites Tronador II" [A new test launch of the Tronador II launcher was successfully performed] (in Spanish). CONAE. August 15, 2014.
  4. ↑ "Argentina prepares for Arsat-1 launch". Rapid TV News. Retrieved 1 September 2014.
  5. ↑ Geddes, Diego (2014-10-16). "Lanzan esta tarde el primer satélite de comunicaciones fabricado en el país" [The first communications satellite built in the country will be launched this afternoon] (in Spanish). Clarín. Retrieved 2015-09-01.
  6. ↑ "ARSAT-1 Telecommunication Satellite, Argentina". Aerospace Technology. Retrieved 2015-08-31.
  7. 1 2 Belluscio, Alejandro G. (2014-10-06). "ArSat-1: Argentina to communicate its heightened space ambitions". NASA SpaceFlight. Retrieved 2015-08-25.
  8. ↑ "Es un gran reconocimiento" (in Spanish). Página/12. Retrieved 18 February 2014.
  9. ↑ "Arianespace to launch Argentine satellite Arsat-1". Arianespace website. 28 June 2010. Retrieved 11 February 2012.
  10. 1 2 3 4 "El ARSAT-1 brindará servicios por 18 años" [ARSAT-1 expected life extended to 18 years] (in Spanish). 2015-05-20. Retrieved 2015-10-14.
  11. ↑ Empresa Argentina De Soluciones Satelitales, Federal Law No. 26,092 of 2006-04-26 (in Spanish). Retrieved on 2015-08-25.
  12. ↑ Acta Acuerdo – Ratifícase, Decree No. 626/2007 PEN of 2007-05-30 (in Spanish). Retrieved on 2015-09-01.
  13. ↑ "Contrato de Locación" [Satellite Order] (in Spanish). ARSAT. 2008-08-28. Retrieved 2015-09-01.
  14. ↑ "Finalizó con éxito la revisión preliminar de diseño del ARSAT-1" [The Preliminary Design Review of the ARSAT-1 is successfully performed] (in Spanish). ARSAT. 2008-10-12. Retrieved 2015-09-01.
  15. ↑ "Arsat adjudicó componentes para su satélite ARSAT-1" [ARSAT selected component suppliers for the ARSAT-1] (in Spanish). ARSAT. 2009-09-08. Retrieved 2015-09-01.
  16. ↑ "Honeywell to Provide Navigation Control for Argentina's First Geostationary Satellite". Honeywell Aerospace. 2010-09-08. Retrieved 2015-09-01.
  17. ↑ "Arsat-1, será lanzado por la empresa francesa, Arianespace" [French Arianespace to launch Argentine satellite ARSAT-1] (in Spanish). ARSAT. 2009-09-08. Retrieved 2015-09-01.
  18. ↑ "Se completó con éxito el acoplamiento de los módulos de servicios y de comunicaciones del Arsat-1" [Mating of the satellite bus and payload module of the ARSAT-1 satellite successfully completed] (in Spanish). ARSAT. 2013-02-21. Retrieved 2015-09-01.
  19. 1 2 "Se finalizaron exitosamente las pruebas y mediciones del satélite argentino ARSAT-1 en CEATSA" [ARSAT-1 successfully finishes environmental tests at CEATSA] (in Spanish). 2014-07-07. Retrieved 2015-09-01.
  20. ↑ "El Arsat-1 culminó una nueva instancia de ensayos ambientales" [Arsat-1 successfully passed a new round of environmental tests] (in Spanish). Telam. 2014-02-10. Retrieved 2015-09-01.
  21. ↑ "Finalizaron las pruebas para poner en órbita el primer satélite desarrollado en Argentina" [First Argentine satellite to orbit finishes testing] (in Spanish). 2014-07-07. Retrieved 2015-09-01.
  22. ↑ "Aseguraron al ARSAT-1, primer satélite de telecomunicaciones argentino" [ARSAT-1, the first Argentine communications satellite, was insured] (PDF) (in Spanish). 2014-04-01. Retrieved 2015-09-01.
  23. ↑ "El ARSAT-1 ingresó al contenedor que lo transportará para su lanzamiento" [ARSAT-1 was installed in its transport container] (PDF) (in Spanish). 2014-08-13. Retrieved 2015-09-01.
  24. ↑ "El ARSAT-1 ya partió rumbo a Guayana Francesa" [ARSAT-1 has left to French Guiana] (PDF) (in Spanish). 2014-09-01. Retrieved 2015-09-01.
  25. ↑ "A tres semanas del lanzamiento, finalizaron con éxito los ensayos del ARSAT-1 en Guayana Francesa" [With three weeks to launch, ARSAT-1 finalizes electrical tests] (PDF) (in Spanish). 2014-09-23. Retrieved 2015-09-01.
  26. ↑ "El ARSAT-1 ya está en el cohete que lo lanzará al espacio" [ARSAT-1 is installed on the launch vehicle] (PDF) (in Spanish). 2014-10-09. Retrieved 2015-09-01.
  27. ↑ "El ARSAT-1 ya está acoplado al cohete que lo lanzará al espacio" [Arsat-1 is mated with the launch vehicle that will send it to space] (in Spanish). Telam. 2014-10-09. Retrieved 2015-09-01.
  28. ↑ "Exitoso lanzamiento del ARSAT-1 al espacio" [Successful launch of the ARSAT-1] (PDF) (in Spanish). 2014-10-16. Retrieved 2015-09-01.
  29. ↑ "Un hito para Argentina: ya está en el espacio el primer satélite construido en el país" [Milestone for Argentina: first indigenously built satellite launched] (in Spanish). Telam. 2014-10-16. Retrieved 2015-09-01.
  30. ↑ "El ARSAT-1 da sus primeros pasos en el espacio" [First steps in space of ARSAT-1] (in Spanish). 2014-10-18. Retrieved 2015-10-14.
  31. 1 2 3 "Las maniobras de puesta en órbita del ARSAT-1 continúan a la perfección" [Orbit rising of ARSAT-1 is picture perfect] (in Spanish). 2014-10-21. Retrieved 2015-10-14.
  32. ↑ "Continúa con éxito la puesta en órbita del ARSAT-1" [Continuous success on the orbit rasing of ARSAT-1] (in Spanish). 2014-10-20. Retrieved 2015-10-14.
  33. ↑ "Concluyó con éxito la tercera maniobra de puesta en órbita" [Third orbit rising of ARSAT-1 is successful] (in Spanish). 2014-10-22. Retrieved 2015-10-14.
  34. ↑ "El ARSAT-1 llegó a órbita geoestacionaria" [ARSAT-1 reached geostationary orbit] (in Spanish). 2014-10-25. Retrieved 2015-10-14.
  35. 1 2 "Las mejores noticias del ARSAT-1" [Best news for ARSAT-1] (in Spanish). 2014-11-03. Retrieved 2015-10-14.
  36. ↑ "Otra prueba superada: concluyó exitosamente el tese en órbita del ARSAT-1" [Another successful test: In Orbit Testing passed by ARSAT-1] (in Spanish). 2014-11-20. Retrieved 2015-10-14.
  37. ↑ "Continúa la migración de servicios al ARSAT-1" [Migration to ARSAT-1 to continue] (in Spanish). 2014-12-16. Retrieved 2015-10-14.
  38. ↑ "ARSAT-1 superó los eclipses y ARSAT-2 está en fase de ensayos ambientales" [ARSAT-1 passed the eclipses and ARSAT-2 is in environmental testing phase] (in Spanish). 2015-05-12. Retrieved 2015-10-14.
  39. ↑ Annex I, Ley de desarrollo de la industria satelital, Expediente No. 175/15 of 2015-09-30 (in Spanish). Retrieved on 2015-09-01.

External links

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