ID :
68433
Tue, 06/30/2009 - 15:11
Auther :

Proton rocket with US commsat to blast off from Baikonur

MOSCOW, June 30 (Itar-Tass) - A Proton-M carrier rocket is to blast
off from Baikomur cosmodrome on Tuesday to put a communications satellite,
the Sirius FM5, into orbit in the interests of the American Sirius
Satellite Radio Inc. (SSRI) Company.
Alexander Borbrenyov, press secretary of the Khrunichev state space
research and production center, has told Itar-Tass, "The liftoff of the
Proton-M carrier rocket, fitted out with the acceleration unit Briz-M, is
scheduled for 23:10, Moscow time".
An official at the Federal space agency (Roscosmos) has specified,
"The area of the fall of the first stage of the carrier rocket will be in
the Karaganda Region, that of the second stage and the cone will be in the
Altai Republic, and the third stage will fall into a Pacific Ocean area".
"The overall duration of injection from liftoff to separation of the
spacecraft from the acceleration unit will be 09 hours and 14 minutes. The
satellite will take up a point in a geostationary orbit at 96 degrees,
western longitude," the Rosscosmos official pointed out.
The Sirius FM5 spacecraft was made by the Space Systems / Loral
Company. The satellite will function in orbit for 15 years. The liftoff
weight of the satellite is 5,840 kilogrammes. It will be a fourth one in
the orbital cluster of the SSRI Company, which transmits noncommercial
satellite-aided musical, sports, news and other radio broadcasts beamed at
the continental part of the United States. The Sirius FM5 will become an
orbital reserve of the operational satellites. Its power is twice as
great as that of any of the existing satellites.
The Proton-M carrier rocket and the Briz-M acceleration unit have been
made at the Khrunichev Center. The rocket is a three-stage one using
liquid propellant, with a liftoff weight of about 700 tonnes.The sale of
Proton rockets on the market of space research services is handled by the
International Launch Services Company, the controlling interest in which
belongs to the Khrunichev Center.
"The forthcoming launch will be a third one in 2009 and the 52nd
commercial mission of Proton carrier rockets. The first commercial launch
was carried out in April 1996," the Khrunichev center official recalled.

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