ROSCOSMOS - Glonass Mission patch.
26.04.2013
Soyuz-2.1b with the upper stage Fregat and navigation spacecraft Glonass-M launch
April 26 at 9:00 MSK 23 minutes from Launch Complex 43 area state test launch site of the Ministry of Defense of the Russian Federation (cosmodrome Plesetsk) is made of a space rocket launch of "Soyuz-2.1b" with the upper stage (RB) "Fregat" and spacecraft ( KA) "Glonass-M". Start calculation made a joint Russian Defense Ministry experts and enterprises of the rocket-space industry.
According to the flight cyclogram Glonass-M (manufactured by JSC "ISS them. Academician Reshetnev" Zheleznogorsk) launched into the target orbit and adopted by the management. He will join the existing constellation of Russian global navigation satellite system GLONASS.
Work on preparing the spacecraft "Glonass-M"
Rocket "Soyuz-2.1b" is created in the Federal State Unitary Enterprise "SRP" TsSKB-Progress "(Samara), upper stage" Fregat "made in FSUE" NPO. Lavochkin. "
Nominal orbital group of the GLONASS system consists of 24 satellites placed in three orbital planes are separated by the longitude of the ascending node at 120 °. In each orbital plane should be placed evenly 8 spacecraft, which will provide a steady signal. Orbit navigation satellites have the following characteristics: height above the surface of the Earth - 19,100 km, inclination - 64,8 °, orbital period around the Earth - 11 hours 15 minutes.
GLONASS-M spacecraft
This configuration allows you to provide continuous and global coverage of the Earth's surface and near-earth space.
The scheme GLONASS constellation
The GLONASS system is defined as a dual-use system that provides the solution of problems in the interests of the Russian Defense Ministry and civilian users. Access to civilian navigation signals of global navigation satellite system GLONASS available to Russian and foreign customers at no cost and without restrictions.
The GLONASS system: http://www.federalspace.ru/main.php?id=24#gl
Original text in Russian: http://www.federalspace.ru/main.php?id=2&nid=20062
Images, Tex, Credits: Press Service of the Russian Federal Space Agency (Roscosmos PAO) / ROSCOSMOS / Translation: Orbiter.ch Aerospace.
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