ID :
202044
Thu, 08/18/2011 - 08:08
Auther :

Proton-M with Express-AM4 satellite blasts off from Baikonur.

BAIKONUR, Kazakhstan, August 18 (Itar-Tass) --A heavy Proton-M carrier
rocket with the Russian communications satellite Express-AM4 aboard
blasted off from Baikonur on Thursday, August 18.
"The active leg of the Proton's flight will continue for approximately
582 seconds, after which the orbital unit consisting of the satellite and
the Briz-M booster will start flying on its own," the spokesman for the
Khrunichev State Space Scientific Production Centre, Alexander Bobrenev,
said.
"The sustainer engine will be activated five times to push the orbital
unit from the sub-orbital trajectory with an inclination of 51.55 degrees
to the target orbit where the satellite is to separate," he said.
"The total time from the lift-off to separation is 9 hours 13 minutes.
In the geostationary orbit the satellite will take a spot at 80 degrees
east longitude," the spokesman said.
The new Express-AM4 satellite was created by Khruinichev in
association with Europe's EADS Astrium, which supplied the payload module.
The satellite is based on the well-proven satellite platform Eurostar
E3000, which is used by leading international operators of satellite
communication services. The satellite weighs 1,450 kilograms and is
designed to operate for 15 years.
It is equipped with 63 transponders in C-, Ku-, Ka-and L-bands. Its
antennas provide sustainable coverage of almost the entire territory of
Russia as well as of the CIS and Central Europe.
The satellite is designed for providing a package of communications
services (digital television, telephony, video conferencing, data
transmission, access to the Internet) and for creating communication
networks based on the VSAT technology.
"During the launch of Express-AM4 the falling area for the first stage
and fairing will be located in the Karaganda region, Kazakhstan, for the
second stage, in the Altai Republic, and for the third stage, in the
Pacific Ocean," the Federal Space Agency (Roscosmos) said.
The Proton-M carrier rocket has three stages and is equipped with
liquid propellant engines. Its takeoff weight is 700 tonnes.

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