Hispasat 1B

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Hispasat 1B
Mission typeCommunications satellite
Operator Hispasat
COSPAR ID 1993-048A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 22723
Mission duration10 years
Spacecraft properties
Bus Eurostar E2000
ManufacturerMatra Marconi Space
Launch mass2,194 kg
BOL mass 1,325 kg
Dry mass1,100 kg
Payload mass280 kg
Dimensions1.7 x 1.9 x 2.1 m (22.02 m solar array span)
Power3,790 W
Start of mission
Launch date22/07/1993
RocketAriane-44L H10+
Launch site Guiana Space Centre
Contractor Arianespace
End of mission
Disposalgraveyard orbit
Deactivated06/06/2006
Orbital parameters
Semi-major axis 42,320 km
Altitude35,800 km
Periapsis altitude 35,945.6 km
Apoapsis altitude 35,953.1 km
Inclination 30º W
Period 24.07 hours
Payload
(12+6) Ku-band (8-55 W, 4-110 W) transponders, (3+1) X-band (110 W) transponders
 

The Hispasat 1B was a Spanish communications satellite operated by Hispasat. Along with the Hispasat 1A, the satellite covered communications over the American Continent for both civilian and military customers. [1] [2] Together they formed the first European constellation operating over the New World. [3] Its service life ended in 2003. [4]

Contents

Body

Ariane 4 rocket. Ariane 4, Expo'92 Sevilla.jpg
Ariane 4 rocket.

Similarly to the Hispasat 1A, the body of the Hispasat 1B was based on the Eurostar E2000 bus. It consisted on a box shaped metal casing (1.7 x 1.9 x 2.21 meters) with retractable solar panels on the lateral faces (when extended measured 22.02 m) and space for the communications module on the upper and lower faces. It was built by Matra Marconi Space (now part of Airbus Defence and Space). [5]

The satellite weighted 2,194 kg at launch and had a dry weight of 1,100 kg. It was 3 axis stabilized. [6]

Propulsion

The satellite was propulsed by a R-4D-11 hypergolic engine (originally developed by Marquardt Corporation for its use in the Apollo program). It was provided by Aerojet Rocketdyne and was capable of developing 490 N of thrust in vacuum. It weighed 3.76 kg. [7] [8]

Communications module

The satellite offered both civilian and military communication channels for its customers. Its main module consisted of 15 active transponders: three X-band (compatible with NATO Standards) with one spare, for its military customers, and 12 Ku-band (8 at 55 W, 4 at 110 W) with six spares, for the civilian market. [9]

The module was divided between the upper, containing the high gain antenna and lower (containing a set of low gain antennas) faces of the prism.

Launch

The satellite was successfully launched 22 July 1993 on board an Ariane-44L H10+ from the Guiana Space Center along with the Indian satellite INSAT-2B. [10] [11]

Its orbit is geostationary (GEO) 30º West, around 35,800 km high (35,945.6 km of perigee and 35,953.1 km of apogee) with 12.4º of inclination, a period of 1,444.1 minutes a RCS of 7.9621 m2 and a semi-major axis of 42,320 km. [12]

During its service life it was monitored from Hispasat's headquarters in Madrid. Its operating life officially ended in 2003 although some of its transponders remained active until 6 June 2006 when the satellite was definitely moved to a graveyard orbit. [13]

See also

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References

  1. ↑ Agudo, Luis Sepúlveda (2003). "Hispasat en el siglo XXI". Antena de telecomunicación (151): 17–23. ISSN   2481-6345.
  2. ↑ "Hispasat 1A/1B at 30.0°W - LyngSat". www.angelfire.com. Retrieved 26 October 2021.
  3. ↑ Sacristán - Romero, F. (2007). "Structure of the Spanish system of satellite of communications". Journal of Applied Research and Technology. 5 (1): 58–60. ISSN   1665-6423.
  4. ↑ "NASA - NSSDCA - Spacecraft - Details". nssdc.gsfc.nasa.gov. Retrieved 25 October 2021.
  5. ↑ "Hispasat 1A, 1B". Gunter's Space Page. Retrieved 25 October 2021.
  6. ↑ Gaullier, F.; Limouzin, G. (1 January 1994). "The EUROSTAR operational concept". Revista Brasileira de Ciencias Mecanicas. 16: 405–411. Bibcode:1994RBrCM..16..405G. ISSN   0100-7386.
  7. ↑ "Hispasat 1B / 1993 - 048A". www.space-propulsion.com. Retrieved 26 October 2021.
  8. ↑ Balduccini, Mauro; Giommi, Marco; Morelli, Guido (1 July 1991). "Flight Firing Operations on the ITALSAT F1 R-4D-11 Thruster". SAE Technical Paper Series. Vol. 1. Warrendale, PA. doi:10.4271/911413.{{cite book}}: CS1 maint: location missing publisher (link)
  9. ↑ "Hispasat-series (and other Spanish communications satellites)". rammb.cira.colostate.edu. Retrieved 26 October 2021.
  10. ↑ Jones, Caleb. "Ariane 44L | Hispasat 1B & Insat 2B". Space Launch Now. Retrieved 26 October 2021.
  11. ↑ "NASA - NSSDCA - Spacecraft - Telemetry Details". nssdc.gsfc.nasa.gov. Retrieved 24 January 2022.
  12. ↑ "Technical details for satellite HISPASAT 1B". N2YO.com - Real Time Satellite Tracking and Predictions. Retrieved 25 October 2021.
  13. ↑ "TSE - Hispasat 1B". www.tbs-satellite.com. Retrieved 25 October 2021.
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