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Russian freight truck Progress flew on Wednesday from Kazakhstan on board the Soyuz-2.1a booster to launch an accelerated pursuit of three-and-a-half hours at the International Space Station with food, fuel, water and other supplies.
Soyuz-2.1a rocket launches from launch pad No. 31 at Baikonur Space Station at 1210: 46 GMT (8:10:46 PM EDT; 5:10:46 PM BA) on Wednesday, approximately at which rotates the Earth at the launch site below the orbital plane of the space station.
Russian officials approved final preparations for the launch early Wednesday, including the filling of a three-stage Soyuz rocket with kerosene and liquid oxygen fuels.
The Soyuz rocket took about nine minutes to launch the Progress MS-12 freighter.
Four amplifiers from the first stage of the Soyuz are switched off and discarded at approximately T + plus 1 minute, 58 seconds, and Soyuz's main stage continues firing up to approximately T + plus 5 minutes. Stage Three The RD-0110 engine ignited to complete the task of launching the Progress MS-12 spacecraft.
After the separation from the third stage of the Union, the Progress power ship deployed its energy-generating solar panels, then expected to launch a series of maneuvers to match its orbit with that of the space station more than 250 miles (400 kilometers). above the Earth.
The Progress MS-12 spacecraft is set to connect to the Pirs space station docking station at 1535 GMT (11:35 a.m. EDT) on Wednesday after an accelerated bilateral orbit profile.
The Progress MS-12 delivery ship transports over 2,600 pounds (1,200 kilograms) of dry cargo to the space station inside the spacecraft compartment, including scientific equipment, life support systems components, food, clothing, medical supplies and personal effects for a team of six from the research lab, according to the Russian space agency Roscosmos.
The Progress spacecraft also launched about 1764 pounds (800 kilograms) of engine fuel into its refueling tanks to be transferred to the star service module of the space station, according to information released by Roscosmos. The Russian Space Agency said the re-supply mission will deliver about 925 pounds (420 kilograms) of water and 110 pounds (50 kilograms) of compressed gas to fill the space station's breathing air.
The cargo mission is designated Progress 73P in the flight crew delivery and delivery sequence to the International Space Station.
The Progress MS-11 delivery ship, loaded with garbage, unplugged from the Pirs module early Monday and headed for a devastating re-entry to end its mission. Much of the spacecraft arriving at the space station in April was expected to burn during the re-entry, with all other debris expected to fall into the distant South Pacific.
The arrival of the Russian Progress cargo vehicle will mark the second delivery to the space station in less than a week. A SpaceX Dragon delivery ship arrived at the station on Saturday with 1097 pounds (2312 kilograms) of experiments and equipment after a two-day flight from Cape Canaveral launch site.
Russian teams in Baikonur are preparing another Soyuz launch on August 22 with the unmanned spacecraft Soyuz MS-14. The mission will test the compatibility of the MS Soyuz spacecraft with the Soyuz-2.1a launcher, which Russia plans to use for crew missions next year.
Soyuz-2.1a has a new digital guidance system and other upgrades, which allows it to carry several hundred kilos more loads in orbit. The version of the Soyuz-FG rocket, which is currently being used to bring crews into orbit, will cease after the launch in September.
The Soyuz MS-14 spacecraft will launch without the life support systems required for flight crew, allowing crews to pack additional cargo into the capsule. The spacecraft will dock with the space station on August 24 for a 13-day stay, during which time the astronauts will unpack their shipments and load items to return to Earth.
The Soyuz capsule parachute to landing in Kazakhstan in early September with equipment up to 1,100 pounds (500 kilograms) of equipment, significantly more cargo than a Soyuz crew vehicle usually returns to Earth.
Meanwhile, the Northrop Grumman Cygnus cargo ship, which arrives at the space station in April, is scheduled to depart on August 6 to begin the final phase of its mission, including the deployment of several CubeSats before combustion during atmospheric re-entry.
The Progress MS-12 spacecraft, which arrives at the station on Wednesday, is expected to remain attached to the orbital research post by December.
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