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Astérix or A-1 (initially conceptualized as FR.2 or FR-2) is the first Frenchsatellite. It was launched on 26 November 1965 by a Diamant A rocket from the CIEES launch site at Hammaguir, Algeria. With Astérix, France became the sixth country to have an artificial satellite and the third country to launch a satellite on its own rocket. Its main purpose was to test the Diamant launcher, though it was also designed to study the ionosphere. Astérix orbits Earth as of December 2020 and is expected to do so for centuries.
Background[edit]
The French space agencies Centre national d'études spatiales (CNES) and Centre national d'études des télécommunications (CNET) were developing Astérix concurrent with FR-1, another satellite, as early as 1963.[1]:26â28 FR-1 was the first step of an ambitious French plan to launch six FR-series satellites, each meant to study a different aspect of the Earth's atmosphere.[1]:26â28 FR-1 was generally designed to study the Earth's magnetic and electric fields in the ionosphere and magnetosphere.[1]:27â28Astérix, ultimately France's first satellite, was initially conceptualized as the second FR satellite under the name FR-2.[1]:26â28 Like FR-1, FR-2 would study the ionosphere.[1]:28 FR-3 was to be a 'scaled-up' version of FR-2, with FR-4 to carry instruments measuring hydrogen distribution in the upper atmosphere, FR-5 to study 'magnetic impulses' and serve as a platform for future research, and FR-6 to be a solar-stabilized spacecraft with final payload to be determined based on experimental results from its antecedents.[1]:28â29Memorytamer 1 5 1 â automatic memory freeing apple.
Initial plans called for a late 1964 or early 1965 launch of FR-1, with Astérix's launch scheduled for early 1965.[1]:26â27 It appears Astérix was put into orbit prior to FR-1 because Charles de Gaulle and CNES wanted France to become the third space power by launching an independently-developed satellite on a French launcher, a propaganda coup for French exceptionalism during the Cold War.[1]:26â27[2][3]
Spacecraft design[edit]
France managed to design, construct, and launch Astérix and FR-1 relatively quickly thanks to three related factors: postwar knowledge gained from Nazi scientists and their work on the V-2 rocket; France's independent development of nuclear IRBM launchers including the Saphir rocket, a precursor to Diamant; and France's collaborative civilian research with the United States (through NASA) and other European countries (through CERN and ESRO).[4][5] Kcncrew pack( 09 15 18) download free.
Measuring approximately 55 centimetres (22 in) in diameter and 55 centimetres high, Astérix's exterior casing is made of fiberglass and resembles a top.[3][2] Its black stripes purportedly provide passivesolar gain.[3] Equipped with accelerometers measuring vertical and horizontal movement and angular velocity, a radio beacon, radartransponder, thermometer, and telemetry transmitters, the satellite was designed to report its position back to Earth.[2] It is unclear whether Astérix was capable of making ionospheric measurements as originally planned.[3]
Asterix The Gaul
The satellite was originally designated A-1, as the French Army's first satellite, but later renamed by the press after popular French comics character Astérix.[4][3] The names Zébulon and Zebby, after another cartoon character from the French children's television program Le Manège enchanté, were also considered.[3][2]
Specifications[edit]
Mission and results[edit]Obelix And Asterix
France carried out two suborbitalAstérix prototype flights on 31 May and 3 June 1965 using Rubis rockets from the CIEES launch complex Bacchus at Hammaguir, Algeria.[7]
Astérix was launched on 26 November 1965 by a Diamant A rocket from the CIEES launch complex Brigitte/A at Hammaguir.[4] The Diamant launcher measured 19 metres (62 ft) tall and weighed 18 tonnes (18 long tons; 20 short tons), and was filled with a mix of turpentine and nitric acid fuel.[2] The payload fairing ejected from the rocket ten minutes after launch, during which the satellite's telemetry equipment was damaged.[2][8] Depending on the source, due to this damage Astérix either failed to transmit any signals,[3][2][8] or stopped transmitting them after two days[3] or 111 days.[4] Neverthless, American radar scans confirmed the satellite successfully entered orbit.[8]
Asterix ProtocolLegacy and status[edit]
With Astérix, France became the sixth country to have an artificial satellite in orbit after the USSR (Sputnik 1, 1957), the United States (Explorer 1, 1958), the United Kingdom (Ariel 1, 1962), Canada (Alouette 1, 1962), and Italy (San Marco 1, 1964). France also became the third country after the USSR and US to launch a satellite on its own rocket: the British, Canadian, and Italian satellites were launched on American rockets.[4][6]
Astérix remains in orbit as of December 2020. Due to the relatively high altitude of its orbit, it is not expected to re-enter Earth's atmosphere for several centuries.[3]
The Musée de l'air et de l'espace in ParisLe Bourget displays a prototype of the satellite, while the Cité de l'espace in Toulouse displays a replica.[2]
See also[edit]References[edit]
External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Astérix_(satellite)&oldid=1003972045'
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