Encyclopedia Astronautica
Myriade



myriade.jpg
Myriade
Credit: ESA
Micro-satellite product line developed jointly by EADS Astrium and the French Space Agency CNES beginning in 1998. Operational, first launch 2004.12.18.

The Myriade program was principally designed for scientific, application and technology missions, in response to increasing demand from the scientific community for quicker, cheaper access to space, with the accent on enhanced payload capacity in terms of mass, power, pointing accuracy, telemetry and processing and orbit control propulsion. The program was also envisaged for institutional or export opportunities. The first mission flying this platform was CNES' scientific microsat Demeter, launched in June 2004, followed by the French MoD system for electro-magnetic environment analysis, Essaim.

Gross mass: 125 kg (275 lb).
First Launch: 2004.12.18.
Last Launch: 2010.07.12.
Number: 7 .

More... - Chronology...


Associated Countries
See also
  • Ariane 5 The Ariane 5 was a completely new design, unrelated to the earlier Ariane 1 to 4. It consisted of a single-engine Lox/LH2 core stage flanked by two solid rocket boosters. Preparatory work began in 1984. Full scale development began in 1988 and cost $ 8 billion. The design was sized for the Hermes manned spaceplane, later cancelled. This resulted in the booster being a bit too large for the main commercial payload, geosynchronous communications satellites. As a result, development of an uprated version capable of launching two such satellites at a time was funded in 2000. More...

Associated Launch Vehicles
  • Ariane 5 French orbital launch vehicle. The Ariane 5 was a completely new design, unrelated to the earlier Ariane 1 to 4. It consisted of a single-engine Lox/LH2 core stage flanked by two solid rocket boosters. Preparatory work began in 1984. Full scale development began in 1988 and cost $ 8 billion. The design was sized for the Hermes manned spaceplane, later cancelled. This resulted in the booster being a bit too large for the main commercial payload, geosynchronous communications satellites. As a result, development of an uprated version capable of launching two such satellites at a time was funded in 2000. More...

Associated Manufacturers and Agencies
  • CNES French agency overseeing development of spacecraft. Centre National d'Etudes Spatiales, Paris, France. More...
  • DGA French agency overseeing development of spacecraft. Delegation Generale de l'Armament, France. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.

Associated Launch Sites
  • Kourou After the agreement with newly independent Algeria for France to evacuate their launch sites in that country, a location near Biscarosse was selected for French missile testing. However since only launches westwards across the Bay of Biscay could be made from this site, it was unsuitable for France's Diamant orbital launch vehicle. After reviewing 14 potential sites, a location in the South American French colony of Guiana was selected. This would allow over-water launches to a tremendous range of possible orbital inclinations -- from -100.5 deg to 1.5 deg. Being near the equator, it would provide the maximum assist from the earth's rotation for launches into equatorial orbits. The decision was formalized in April 1964 and in July 1966 ELDO chose the site for future launches of the Europa II launch vehicle. More...

Myriade Chronology


2004 December 18 - . 16:26 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5Gp. LV Configuration: Ariane 5G+ V165.
  • Parasol - . Mass: 125 kg (275 lb). Nation: France. Agency: CNES. Manufacturer: EADS Astrium. Class: Earth. Type: Atmosphere satellite. Spacecraft: Myriade. USAF Sat Cat: 28498 . COSPAR: 2004-049G. Apogee: 673 km (418 mi). Perigee: 659 km (409 mi). Inclination: 98.0780 deg. Period: 97.91 min. Parasol carried a wide-field imaging radiometer/polarimeter called POLDER (Polarization and Directionality of the Earth’s Reflectances), designed in partnership with the LOA atmospheric optics laboratory in Lille (CNRS-USTL). POLDER was designed to improve the knowledge of the radiative and microphysical properties of clouds and aerosols by measuring the directionality and polarization of light reflected by the Earth-atmosphere system.
  • Essaim 1 - . Mass: 120 kg (260 lb). Nation: France. Agency: DGA. Manufacturer: EADS Astrium. Class: Military. Type: Electronic intelligence satellite. Spacecraft: Myriade. USAF Sat Cat: 28494 . COSPAR: 2004-049C. Apogee: 673 km (418 mi). Perigee: 663 km (411 mi). Inclination: 98.0760 deg. Period: 97.96 min. The Essaim demonstrator was a system of several micro-satellites (Essaim means 'swarm' in French) for 'analysis of the electro-magnetic environment of the Earth's surface' (electronic intelligence). DGA, the French Ministry of Defence's procurement agency, developed the project. The system also comprised a ground control segment and a ground station for data processing. It was called a 'demonstrator' since the mission's objective was to assess the operational capability of such a system, paving the way for the next generation. The Essaim satellites were based on EADS Astrium's Myriade multipurpose micro-satellite. In early 2000, the DGA awarded the contract for the development, manufacturing of this turnkey system of micro-satellites and associated ground segment. Under the contract, EADS Astrium was also responsible for personnel training and system operations during the three-year life duration of the programme.
  • Essaim 2 - . Mass: 120 kg (260 lb). Nation: France. Agency: DGA. Manufacturer: EADS Astrium. Class: Military. Type: Electronic intelligence satellite. Spacecraft: Myriade. USAF Sat Cat: 28495 . COSPAR: 2004-049D. Apogee: 664 km (412 mi). Perigee: 657 km (408 mi). Inclination: 98.1000 deg. Period: 98.00 min.
  • Essaim 3 - . Mass: 120 kg (260 lb). Nation: France. Agency: DGA. Manufacturer: EADS Astrium. Class: Military. Type: Electronic intelligence satellite. Spacecraft: Myriade. USAF Sat Cat: 28496 . COSPAR: 2004-049E. Apogee: 667 km (414 mi). Perigee: 654 km (406 mi). Inclination: 98.1000 deg. Period: 98.00 min.
  • Essaim 4 - . Mass: 120 kg (260 lb). Nation: France. Agency: DGA. Manufacturer: EADS Astrium. Class: Military. Type: Electronic intelligence satellite. Spacecraft: Myriade. USAF Sat Cat: 28497 . COSPAR: 2004-049F. Apogee: 670 km (410 mi). Perigee: 651 km (404 mi). Inclination: 98.1000 deg. Period: 98.00 min.

2010 June 15 - . 14:42 GMT - . Launch Site: Dombarovskiy. LV Family: R-36M. Launch Vehicle: Dnepr.
  • Picard - . Mass: 100 kg (220 lb). Nation: France. Agency: Makeyev. Class: Astronomy. Type: Solar astronomy satellite. Spacecraft: Myriade. USAF Sat Cat: 36598 . COSPAR: 2010-028A. Apogee: 730 km (450 mi). Perigee: 725 km (450 mi). Inclination: 98.3000 deg. Period: 99.30 min. Summary: Solar observation payload..

2010 July 12 - . 03:52 GMT - . Launch Site: Sriharikota. LV Family: PSLV. Launch Vehicle: PSLV CA.
  • Alsat 2A - . Mass: 116 kg (255 lb). Nation: Algeria. Agency: ISRO. Program: Alsat. Class: Surveillance. Type: Surveillance satellite. Spacecraft: Myriade. USAF Sat Cat: 36798 . COSPAR: 2010-035D. Apogee: 674 km (418 mi). Perigee: 672 km (417 mi). Inclination: 98.2000 deg. Period: 98.20 min. Summary: Optical surveillance satellite with 2.5 meter panchromatic resolution and 10 meter in 4 band/multispectral mode..

Home - Browse - Contact
© / Conditions for Use