Startup works to launches of boosters Proton-M suspended |
MOSCOW, August 23 (Itar-Tass) —— The startup works to the launches of boosters Proton-M and upper stage rockets Briz-M are suspended until the reasons for unscheduled orbiting of the communication satellite Express-AM4 are found, the press service of the Federal Space Agency told Itar-Tass on Tuesday.
“The booster Proton-M with the upper stage rocket Briz-M and the communications satellite Express-AM4 was launched from the Baikonur spaceport on August 18,” a source in the Federal Space Agency (Roskosmos) recalled. “The launch and the flight of the booster Proton-M passed as scheduled under the program,” the source said.
“During the flight of the orbital block made of the upper stage rocket and the communication satellite the Briz-M control system malfunctioned that misled the satellite Express-AM4 on the non-designated orbit,” the press service reported. “The space control system of the Space Troops of the Defence Ministry and the North American Aerospace Defence Command (NORAD) managed to find the parameters of the satellite orbit: inclination - 51.23 degrees, apogee – 20,294 kilometers, perigee – 995 kilometers and the rotation period – 368 minutes,” the press service said.
“The representatives of the Federal Space Agency, the Ministry of Telecommunications and Mass Communications, the Space Communications federal state unitary enterprise an the EADS Astrium Company have taken joint efforts to get on the line with the satellite in order to activate its onboard systems. The specialists keep attuning the communication with the satellite,” the source said.
“A joint working group was formed to find an opportunity to transfer the satellite on the designated orbit and further designated use with activated onboard system,” the source noted. “The interdepartmental committee keeps investigating the unscheduled launch of the booster Proton-M with the upper stage rocket Briz-M. Several reasons for the current situation are under investigation. The breakdown in the control system of the upper stage rocket is the major one,” the Roskosmos source said.
“The startup works for the launches of boosters Proton-M and upper stage rockets Briz-M were suspended until the reasons for unscheduled orbiting of the satellite Express-AM4 are found,” the Roskosmos source said.










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