Ekspress AM4R

Ekspress AM4R
Spacecraft properties

Mission type	Communications
Operator	RSCC
Mission duration	15 years (planned) Failed to orbit

Bus	Eurostar 3000
Manufacturer	Airbus Defence and Space
Launch mass	5,775 kilograms (12,732 lb)^[1]

Start of mission
Launch date	15 May 2014, 21:42 (2014-05-15UTC21:42Z) UTC^[2]
Rocket	Proton-M/Briz-M
Launch site	Baikonur 200/39
Contractor	Khrunichev

Orbital parameters
Reference system	Geocentric
Regime	Geosynchronous planned Failed to orbit
Longitude	80° East
Inclination	0 degrees
Period	24 hours
Epoch	Planned

Transponders
Band	30 C band 28 K_u band 2 K_a band 3 L band

Ekspress AM4R (Russian: Экспресс-АМ4Р meaning Express AM4R)^[3] 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.^[4]

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.^[5] 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.^[1]

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.^[2]

References

1 2 Krebs, Gunter. "Ekspress-AM 4, 4R". Gunter's Space Page. Retrieved 26 May 2014.
1 2 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". Retrieved 26 May 2014.
↑ "Express AM4R and Express AM7". Astrium. Retrieved 26 May 2014.

Ekspress satellites

Ekspress	11L 12L

Ekspress-A	A1 A1R A2 A3

Ekspress-AM	AM1 AM2 AM3 AM4 AM4R AM5 AM6 AM7 AM8 AM11 AM22 AM33 AM44 AMU1

Ekspress-AT	AT1 AT2

Ekspress-MD	MD1 MD2

← 2013 · Orbital launches in 2014 · 2015 →

January	GSAT-14 – Thaicom 6 – CRS Orb-1 (Flock-1 × 28 · ArduSat-2 · Lituanica SAT-1 · LitSat-1 · SkyCube · UAPSat-1) – TDRS-L

February	Progress M-22M – ABS-2 · Athena-Fidus – Türksat 4A – USA-248 – GPM Core · Ginrei · KSAT-2 · INVADER · OPUSAT · STARS-II · TeikyoSat-3 · ITF-1

March	Ekspress AT1 · Ekspress AT2 – Astra 5B · Amazonas 4A – Kosmos 2494 – Soyuz TMA-12M – Shijian XI-06

April	USA-249 – Sentinel-1A – IRNSS-1B – Progress M-23M – Ofek-10 – USA-250 – EgyptSat 2 – SpaceX CRS-3 · KickSat · PhoneSat 2.5 · ALL-STAR/THEIA · SporeSat · TestSat-Lite – Luch 5V · KazSat-3 – KazEOSat 1

May	Kosmos 2495 – Ekspress AM4R – USA-251 – USA-252 – Kosmos 2496 · Kosmos 2497 · Kosmos 2498 · Kosmos 2499 – ALOS-2 · Raijin-2 · UNIFORM-1 · SOCRATES · SPROUT – Eutelsat 3B – Soyuz TMA-13M

June	Kosmos 2500 – Deimos-2 · KazEOSat 2 · Hodoyoshi 3 · Hodoyoshi 4 · AprizeSat 9, 10 · BRITE-Montreal · BRITE-Toronto · BugSat 1 · SaudiSat-4 · TabletSat-Aurora · UniSat-6 (AeroCube-6 · ANTELSAT · Lemur-1 · Tigrisat) · DTUSat-2 · Duchifat-1 · NanoSatC-Br 1 · PACE · Perseus-M × 2 · PolyITAN-1 · POPSAT-HIP-1 · QB50P1 · QB50P2 · Flock-1c × 11 – SPOT 7 · CanX-4 · CanX-5 · AISat · VELOX-I

July	OCO-2 – Gonets-M 18, 19, 20 – Meteor-M 2 · AISSat-2 · DX-1 · Relek · SkySat-2 · TechDemoSat-1 · UKube-1 – O3b × 4 (FM3, FM6, FM7, FM8) – CRS Orb-2 (Flock-1b × 28 · TechEdSat-4) – Orbcomm-2 × 6 – Foton-M No.4 – Progress M-24M – USA-253 · USA-254 · USA-255 – Georges Lemaître ATV

August	USA-256 – AsiaSat 8 – Yaogan 20 A, B, C – WorldView-3 – Gaofen 2 · Heweliusz – Galileo FOC-1 · Galileo FOC-2

September	Chuangxin 1-04 · Lingqiao – AsiaSat 6 – Yaogan 21 · Tiantuo 2 – MEASAT 3b · Optus 10 – USA-257 – SpaceX CRS-4 – Soyuz TMA-14M – Olimp-K – Shijian XI-07

October	Himawari 8 – IRNSS-1C – Intelsat 30 · ARSAT-1 – Yaogan 22 – Ekspress AM6 – Chang'e 5-T1 · 4M – Shijian 11-08 – Cygnus CRS Orb-3 (Arkyd-3 · Flock-1d × 26 · GOMX-2 · RACE) – Progress M-25M – USA-258 – Meridian 7

November	Sasuke · Hodoyoshi 1 · Kinshachi 1 · Tsukushi · Tsubame – Yaogan 23 – Yaogan 24 – Kuaizhou 2 – Soyuz TMA-15M – Kosmos 2501

December	Hayabusa 2 · PROCYON · Shinen 2 · DESPATCH – Orion EFT-1 – DirecTV-14 · GSAT-16 – CBERS-4 – Yaogan 25 A, B, C – USA-259 – Yamal-401 – O3b × 4 (FM9 to FM12) – Kondor-E No.2 – IPM – Kosmos 2502 – Resurs-P No.2 – Yaogan 26 – Astra 2G – Fengyun 2-08

Launches are separated by dashes ( – ), payloads by dots ( · ). Manned flights are bolded. Launch failures are in italics. Payloads deployed from other spacecraft are (enclosed in brackets).

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