SRI LANKAN SATELLITE SUPREME SAT 1 Successfully Launched !

Star, 12th In Communications Satellite Successfully Launched
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CNS, Xichang, November 27, November 27, Beijing time, at the Xichang satellite launch Center in China with "long third, b" rocket succeeded in turning France manufactured by Thales Alenia Aeronautica "Star, 12th in" communication satellites were launched and fed into the planned transfer orbit.

About 26 minutes after the rocket liftoff, data from the XI ' an satellite monitoring and control center indicated that Star separated by arrows properly, "Star, 12th in" satellite accurately entered, a perigee of 207 kilometers, an apogee of 50,539 km orbit inclined geosynchronous transfer orbit of 26.8 degrees, launch success.

This satellite launch missions in accordance with China's great wall industry Corporation and the China satellite communications group limited, Hong Kong Asia-Pacific communications satellites limited to implementation of launch services contract signed in July this year. "Star, 12th in" satellites controlled by the China satellite communications group is responsible for management, will provide countries in Asia, Africa and Europe with 24 c-band and Ku-band transponder 23 road commercial communication services, China SATCOM operations 13th commercial telecommunications satellite managed by the company.

Assumed the task of launching the "long March b, third" rocket by China Aerospace Science and Technology Corporation is a member of China Academy of launch vehicle technology development, China's "long March" rocket series 173th space launch.

China Increases Launch Pace As Long March 3B Delivers ChinaSat-12 To Orbit
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November 27, 2012 - A Chinese Long March 3B/E Launch Vehicle blasted off from the Xichang Satellite Launch Center, Sichuan Province, China at 10:13 UTC on Tuesday, November 27, 2012 on a mission to deliver ChinaSat 12 to Geostationary Transfer Orbit. The launch came just days after China?s most recent mission when a Long March 4C lofted Yaogan 16.

Initially, the flight was planned to occur last week, but hours before liftoff a leak on the launcher was detected leading to a launch delay to Tuesday. Liftoff of the launch vehicle was as expected and the initial phase of flight was reported to be nominal. Confirmation of mission success was given by Thales Alenia, the Satellite Manufacturer.

ChinaSat 12 is a communications satellite that was manufactured by Thales Alenia Space, France and will be co-operated by Supremesat, Sri Lanka, and Chinese communications provider China Satcom. To customers of SupremeSat, the vehicle is also known as SupremeSat-I.

The vehicle is based on the SB4000C2 Satellite bus featuring two deployable solar arrays and onboard batteries, a communications payload, propulsion systems and avionics for a total liftoff mass of 5,054 Kilograms. The Satellite is equipped with 24 C-Band and 23 Ku-Band transponders. ChinaSat 12 will provide communications coverage to Asia, Africa, Australia and the Indian Ocean as well as the Arabian Sea. The satellite will provide satellite broadcasting, data transmission, digital broadband multimedia system and media streaming services. SupremeSat will use the satellite for Direct-To-Home broadcasting.

The satellite is outfitted with a S400 Apogee Motor. The S400 series built by EADS Astrium are bi-propellant engines using Monomethylhydrazine and Mixed Oxides of Nitrogen as propellants. Depending on the version used, S400 provides 420 to 425 Newtons of Thrust with a specific impulse of 318-321 seconds.

The satellite will operate from 87.5 degrees East Longitude in Geostationary Orbit with an operational lifetime of 15 years.

Long March 3B/E is the biggest launcher of the Long March Family standing 56.33 meters tall with a main diameter of 3.35 meters and a liftoff mass of 458,970 Kilograms. It represents a recent improvement of the Long March 3B Launcher that first flew in 2007 and features a larger first stage and boosters than the CZ-3B to increase its payload capability to Geostationary Transfer Orbit to 5,500 Kilograms and Low Earth performance to 12 metric tons.

Long March 3B features a core stage and four-strap-on boosters and a second stage, all using storable propellants, being topped by a cryogenic third stage. The four strap-on boosters use 37,700 Kilograms of Unsymmetrical Dimethylhydrazine and Nitrogen Tetroxide as propellants. Each of the Boosters is 15.3 meters long and 2.25 meters in diameter. The strap-ons provide 740 Kilonewtons of thrust with their YF-25 engine and are jettisoned after burnout and fall back to Earth. The boosters burn just over two minutes. The Core Stage of the vehicle features four YF-20C engines that provide a combined thrust of 2,962 Kilonewtons. The stage is 23.3 meters in length and holds 171,800 Kilograms of storable propellants at blastoff. Stage 2 has a burn time of 2 minutes and 39 seconds. The second stage of the Long March 3B also uses Hydrazine and NTO as propellants on its way uphill. The second stage features a YF-22E Main Engine providing a thrust of 742 Kilonewtons as well as four 12kN Vernier Engines. The stage is 10 meters in length consuming 49,000 Kilograms of propellants during flight. It burns for just over three minutes before the third stage takes over.

Unlike the other stages, the third stage of the CZ-3B is powered by cryogenic Propellants. The upper stage of the Long March 3B is powered by two YF-75 Engines - each providing 79 Kilonewtons of Thrust. Third Stage propellants are 18,200 Kilograms of liquid Oxygen and liquid Hydrogen. The Upper Stage has a reduced diameter of three meters and is 12.4 meters long.

For Geostationary Transfer Orbit Missions, the third stage makes two burns with variable durations, the first puts the vehicle in a Parking Orbit while the second raises the Apogee to match Geostationary Altitude.

The payload fairing of the CZ-3B/E is 4.2 meters in diameter and separates about 4 minutes into the flight.

This launch marked the 173rd orbital launch by China and the 173rd flight of the Long March Rocket Family. If successful, it will be China?s 18th success of the year. The launch was the 76th orbital launch from Xichang and the 8th launch from Xichang in 2012.

Source: http://mvdig.com/f2/sri-lankan-satellite-supreme-sat-1-successfully-launched-118854/

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