A French-built communications satellite tv for pc for Russia’s Gazprom Area Programs launched Might 30 is maneuvering towards its closing working location in geostationary orbit utilizing a set of backup thrusters after the spacecraft encountered an issue with its important engine.
Floor controllers deliberate a collection of burns utilizing the Yamal 601 satellite tv for pc’s important engine to ship the craft into geostationary orbit greater than 22,000 miles (practically 36,000 kilometers) above the equator, the place its pace will match the speed of Earth’s rotation, giving Yamal 601 a relentless protection zone over Russia, the Center East and elements of Southeast Asia.
However a important engine burn June 1 was lower brief when the Yamal 601 satellite tv for pc’s pointing, or perspective, drifted away from anticipated parameters, in line with Gazprom Area Programs, a subsidiary of the Russian oil large. The spacecraft went into protected mode, however all different programs on Yamal 601 remained wholesome, officers mentioned.
Gazprom Area Programs mentioned the issue was presumably attributable to a deviation within the thrust vector from Yamal 601’s major orbit-raising engine, which was inbuilt Germany by ArianeGroup. Thales Alenia Area of France, the prime contractor for the Yamal 601 spacecraft, decided the satellite tv for pc’s lower-thrust rocket engines could possibly be used for orbit-raising.
With a completely fueled weight round 11,900 kilos (5,400 kilograms), Yamal 601 satellite tv for pc efficiently launched aboard a Russian Proton rocket May 30 from the Baikonur Cosmodrome in Kazakhstan. The Proton’s Breeze M higher stage delivered the spacecraft into an on-target elliptical orbit, with a excessive level close to geostationary altitude greater than 22,000 miles above Earth, and a low level roughly four,000 miles (6,400 kilometers) in altitude.
It was as much as Yamal 601’s personal propulsion system to complete the job of reaching geostationary orbit.
The S400 important engine aboard Yamal 601 produces round 90 kilos of thrust, whereas the satellite tv for pc’s smaller management jets generate roughly 2 kilos of thrust. By burning the smaller thrusters for longer durations, Yamal 601 can attain its meant orbit by early July, Gazprom mentioned in an announcement.
Regardless of the primary engine concern, Yamal 601 remains to be anticipated to finish its deliberate 15-year mission for Gazprom, in line with Thales Alenia Area, which assembled the satellite tv for pc at its facility in Cannes, France.
The primary orbit-raising maneuver utilizing the backup mode was accomplished June 6, Gazprom mentioned.
Yamal 601’s C-band payload, which consists of 18 transponders, will substitute protection earlier equipped by the Yamal 202 satellite tv for pc launched in 2003. The C-band transponders will cowl Russia, neighboring nations in Jap Europe and Central Asia, the Center East, and a part of Southeast Asia.
In line with Thales Alenia Area, a Ka-band payload on-board Yamal 601 will develop Gazprom’s protection, with 32 spot beams over Western Russia and West Siberia to supply high-speed broadband connectivity to corporations, regional governments, and particular person shoppers.
Gazprom Area Programs supplies communications capability for the Russian authorities, Russian tv broadcasters and different industrial prospects.
As soon as in place at an working location in gestationary orbit at 49 levels east longitude, Yamal 601 will substitute the growing older Yamal 202 communications satellite tv for pc launched in 2003.
Email the writer.
Observe Stephen Clark on Twitter: @StephenClark1.