|Mission duration||15 years (planned)|
Failed to orbit
|Manufacturer||Airbus Defence and Space|
|Launch mass||5,775 kilograms (12,732 lb)|
|Start of mission|
|Launch date||15 May 2014, 21:42UTC|
|Launch site||Baikonur 200/39|
Failed to orbit
|Band||30 C band|
28 Ku band
2 Ka band
3 L band
Ekspress AM4R (Russian: Экспресс-АМ4Р meaning Express AM4R) was a Russian communications satellite intended for operation by the State Company for Satellite Communications. Constructed as a replacement for Ekspress AM4, which was left unusable after the upper stage of the rocket carrying it malfunctioned, Ekspress AM4R was also lost due to a launch failure.
Astrium, which had become part of Airbus Defence and Space by the time of the satellite's launch, constructed Ekspress AM4R, which was based on the Eurostar 3000 satellite bus. It was identical in design to Ekspress AM4, with a mass of 5,775 kilograms (12,732 lb) and a planned operational lifespan of fifteen years. The satellite carried sixty-three transponders: thirty operating in the C band of the electromagnetic spectrum, twenty eight in the Ku band, two in the Ka band and three in the L band. It was to have been the largest and most powerful satellite in the Ekspress constellation.
Khrunichev was contracted to launch Ekspress AM4R, using a Proton-M/Briz-M rocket - the same configuration that had failed to deploy Ekspress AM4. The launch took place from Site 200/39 at the Baikonur Cosmodrome, at 21:42 UTC on 15 May 2014. Shortly after launch the rocket was reported to have encountered a problem during third stage flight, and as a result the satellite failed to reach orbit.
- Krebs, Gunter. "Ekspress-AM 4, 4R". Gunter's Space Page. Retrieved 26 May 2014.
- Graham, William; Bergin, Chris (15 May 2014). "Russian Proton-M suffers failure during Ekspress-AM4R launch". NASASpaceflight.com. Retrieved 26 May 2014.
- "Ракета "Протон-М" для запуска "Экспресс-АМ4Р" доставлена на Байконур". RIA Novosti. 28 February 2014. Retrieved 26 May 2014.
- Zak, Anatoly. "Proton fails again with Ekspress satellite". Archived from the original on 27 May 2014. Retrieved 26 May 2014.
- "Express AM4R and Express AM7". Astrium. Retrieved 26 May 2014.
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