Thursday , July 7 2022

Set Arianespace Soyuz ST-A for the CSO-1 launch – NASASpaceFlight.com



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Arianespace will be making its last launch of 2018 on Tuesday, using the Soyuz rocket to use a high resolution imaging satellite for the French military. Soyuz has arranged to eradicate from the Center Spatial Guinea – near Kourou, French Guiana – at 13:37:14 local time (16:37 PM UTC), using his CSO-1 payment over just over an hour lately.

The launch of Tuesday will use CSO-1, the first of three satellites that will form Optical Spatiale Optique (CSO), or Optical Space Component. This spacecraft will serve a French military, replacing the earlier satellites of Helios earlier. In order to develop the constitution, the Générale de l'Armement (DGA – Directorate General of Arms) Directive is committed to a partnership with the national space agency, CNES.

Airbus Defense a Space is the main contractor for the three CSO satellites, based on its AstroSat-1000 platform. Each satellite has a crowd of 3,565 kilograms (7,859 pounds) and is expected to operate for at least ten years. The imaging systems were produced by Thales Alenia Space. From a simultaneous orbit of about 800 kilometers (497 miles, 432 miles), the CSO-1 is expected to be able to visualize Earth in decisions of about 35 centimeters (14 inches).

CSO-1 is the first satellite in the third generation of less satellites found, following on from two pairs of Helios spacecraft. The first French military devotion was Helios-1A, which was launched on top of the Ariane 4 rocket in July 1995.

The close-up Helios-1B was used in December 1999 to replace. A second generation of Helios space ships followed with advanced resolution imaging systems: Helios-2A was used by Ariane 5G + on December 18, 2004 and Helios-2B was launched on board Ariane 5GS five years later, to the minute. Unfortunately, CSO-1 has arranged to cancel the anniversary of these two launchings, although the launch time for a mission on Tuesday is thirty minutes later than both launching Helios.

CSO-1 – through Arianespace

Once each of the three satellites have been launched, the CSO will operate with two satellites in the 800-kilometer orbit, while CSO-2 will use a lower orbit for advanced resolution imaging. The CSO-2 mission was described as one of the identities – distinguishing features seen by its satellite sister in the higher orbit. CSO-2 is currently being launched in 2020 or 2021, with CSO-3 joining the constitution one or two years later.

CSO-1 will be launched by Paris based Arianespace, who has used all of France's previous analytics satellites. Arianespace operates a fleet of three different types of rockets: Vega is used to launch smaller satellites, Ariane 5 carries the heavier weight loads – usually pairs of geostatorial communication satellites – and Russia's Soyuz rocket fills & # 39; r gap in capacity between these two vehicles. The Tuesday mission will use Soyuz, in its ST-A Soyuz configuration with a Fregat-M advanced period.

The Soyuz ST-A is based on a Soyuz-2-1a rocket, including customizations that are special to use the Arianespace launch site, Center Spatial Guyanas (CSG), which has & # 39 ; I located near Kourou in French Guiana. Soyuz-2-1a is one of three modern versions of earlier Soyuz rockets, derivatives of the Sergei Korolev R-7 launcher used for the launch of Russian satellite space and crews (formerly Soviet) since the 1960's.

Soyuz ST-A during pre-load load integration – through Arianespace

Soyuz-2-1a flew his first suborbital test in 2004 and his first orbital launch two years later. He introduced advanced advanced and second phase machines over the previous generation Soyuz-U, as well as a digital flight control system and other improvements. The second configuration of Soyuz-2, the Soyuz-2-1b (operated by Arianespace as the Soyuz ST-B) also has a third step upgrade machine. The smaller Soyuz-2-1v has designed to carry lighter loads, but this version of the rocket is not used by Arianespace.

Soyuz is a three-stage rocket, although the first phase and the second firefighter are on a lift. In order to reach higher orbit or perform more complex journeys, Soyuz can be used in conjunction with an advanced step. For a mission on Tuesday, Fregat-M will be used to insert CSO-1 to a planned sun co-ordination. Fregat is the most common type of advanced step and flight on Soyuz; it is based on the Soviet Union's late intertwined test power systems and can restart its engine several times over a long extended mission to ensure that its payload is presented to the required orbit.

Twentieth-century Soyuz of French Guiana will be launched on Tuesday. The Soyuz launch lamb, Ensemble de Lancement Soyouz (ELS) was first used in October 2011 for using a pair of Galileo navigation satellites. Including the vehicle that performs the CSO-1 mission, six Soyuz ST-A and fourteen Soyuz ST-B rockets have left Kourou. All but one of the Soyuz launched from Kourou – the ST-B Soyuz whose Fregat top step has failed – has successfully completed their trips.

Soyuz Arianespace launch pad – through Arianespace

Soyuz is also launching Cosmodrome Baikonur in Kazakhstan and Plesetsk and Vostochny Cosmodromes in Russia.

VS20 is the Arianespace designation for Tuesday's mission. The launch will start with ignoring the first and second engine at about six seconds before a lift. The first stage of the ST-A Soyuz vehicle consists of four boosting with RD-107A machines, cluttered around the second phase, which is powered by one RD-108A.

Rocket engines will build up while the rocket is caught down, reaching full power in the T-1 mark in the second floor. On zero, the pad swing arms will open, and Soyuz will begin to climb towards space.

Soyuz ST-A during the previous launch – through ESA

The first and second stages of the rocket will burn together for the first and thirty minutes of eight seconds. At this point the four first phase grows close, taking advantage of surplus oxygen to push their nose off the rocket as they separate. The pattern made by the separation developers in Korolev Cross is called after the rocket's main designer.

After the first phase is separated, Soyuz will continue flying under the power of its second phase for another two minutes and 49 seconds. About thirty two seconds before the end of the second phase flight, the payload fee will be separated from the rocket's nose.

The second steps and the third step have been designed to separate while the second stage is still burning. The third step ignores its RD-0110 engine while the RD-108A still burns to ensure that the equipment continues to settle in the third stage tanks. The third phase will fire for four minutes and two seconds before using Fregat to continue on a CSO-1 tour to orbit.

Sixty-second after the third phase separation, Fregat will ignore its S5.98M engine for the first of three proposed burns. This will last eight minutes and a half-second seconds, establishing an initial parking orbit. After a 35-minute coastline, 34 seconds, Fregat will be a fire again for another 89 seconds, circulating the orbit.

CSO-1 will separate from Fregat five minutes after the second burn ends – about an hour and 44 seconds after a lift. Fregat will make its third and final four minutes shorter than 51 minutes later, with this 55-second motion serving to roll the platform so as to avoid unnecessary residues in orbit.

The CSO-1 launch is the eleventh and last for Arianespace in 2018, following two Soyuz's two trips, two Vega launches and six Ariane 5s. The next Arianespace launch has scheduled for January later with the communication satellites HS4-SGS1 and GSAT-31 on board and Ariane 5, and the next launch of Soyuz from Kourou will be expected to spend four O3b satellites in a quarter first of the new year.

It is expected to launch more Russian Soyuz before the end of the year: the Soyuz-2-1a / Fregat-M vehicle is being erased off the Cosmodrome Vostochny on December 27, with a basic charge burden as a pair of Kanopus-V Remotely sensing satellites.

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