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Russia Launches Molniya Military Satellite
By Anatoly Zak
Special to SPACE.com
posted: 08:17 am ET
25 October 2001

milsat_launch_011025

The Russian Space Forces launched a military communications satellite today from the Northern Cosmodrome in Plesetsk, Russia. A four-stage Molniya-M rocket blasted off from the Launch Pad 3 at Site 43 of the space center at 15:34 Moscow Time (7:34 a.m. EDT) and ten minutes later successfully delivered the Molniya (Lightning) spacecraft into the initial orbit, Nikolai Dovedenko, spokesman for the Russian Space Forces told SPACE.com.

The fourth stage of the launcher was then expected to fire again to push the spacecraft into its final highly elliptical orbit with the inclination 62.8 degrees toward the Equator. The launch was previously scheduled on October 11.

Unlike traditional communications satellites, which spend 24 hours for one rotation around the Earth and seem to "hang" over the same point above the Equator, Molniya spacecraft are delivered into orbits where they make one rotation around the Earth in about 12 hours. On its way around the planet, the Molniya climbs as high as 40,000 kilometers in the apogee (the highest point) over the Northern Hemisphere, descending as low as 470 kilometers in the perigee (the lowest point) over the Southern Hemisphere. As a result, the spacecraft slowly drifts over the Russian territory, disappearing from the view of the ground control stations only for a short period of time.

In order to provide uninterrupted communications over the Russian territory several Molniya satellites have to work in tandem. A previous launch of the Molniya spacecraft took place on July 20, 2001. The satellites can be used to transmit television and radio signals for both civilian and military users; however, the newest birds are expected to serve the military.

At present the Reshetnev Center in the Siberian town of Zheleznogorsk builds the Molnia satellites. However, the system was originally developed in the 1960s at Sergei Korolev's OKB-1 design bureau, known today as RSC Energia.

 

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