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For its second launch of the year, Arianespace Flight 195 will use an Ariane 5 ECA rocket with a cryogenic upper stage, to launch the Arabsat 5A communications satellite, to cover the Middle East and Africa, and South Korea's COMS 1 satellite to monitor weather, observe oceans and test communications.
Launch opportunity:
#1: [highlight]Scrubbed[/highlight]
#2: [highlight]Scrubbed[/highlight]
#3: Launched
Launch Vehicle:
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{colsp=2}
Height|up to 52 m
Diameter|up to 5.4 m
Liftoff mass|780 tonnes
Payload mass|9.6 tonnes
The latest version of the Ariane 5 launcher, Ariane 5 ECA, is designed to place payloads weighing up to 9.6 tonnes into GTO. With its increased capacity, Ariane 5 ECA can handle dual launches of very large satellites.
Payloads:
Links:
Launch preparations:
Launch events:
Launch opportunity:
#1: [highlight]Scrubbed[/highlight]
Window
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Universal / UTC
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Paris / CEST
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Kuorou / GFT
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Washington DC / EDT
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Seoul / KST
start
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21:41
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23:41
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18:41
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5:41 p.m.
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06:41
end
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22:45
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00:45
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19:45
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6:45 p.m.
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07:45
on
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June 23
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June 23/24
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June 23
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June 23
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June 24
#2: [highlight]Scrubbed[/highlight]
Window
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Universal / UTC
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Paris / CEST
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Kuorou / GFT
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Washington DC / EDT
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Seoul / KST
start
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21:41
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23:41
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18:41
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5:41 p.m.
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06:41
end
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22:52
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00:52
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19:52
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6:52 p.m.
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07:52
on
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June 24
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June 24/25
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June 24
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June 24
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June 25
#3: Launched
Window
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Universal / UTC
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Paris / CEST
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Kuorou / GFT
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Washington DC / EDT
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Seoul / KST
start
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21:41
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23:41
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18:41
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5:41 p.m.
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06:41
end
|
22:52
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00:52
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19:52
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6:52 p.m.
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07:52
on
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June 26
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June 26/27
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June 26
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June 26
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June 27
launch
|{colsp=5}
L[eventtimer]2010-6-26 21:41;%c%%ddd%/%hh%:%mm%:%ss%[/eventtimer]Launch Vehicle:
Ariane 5 ECA
Height|up to 52 m
Diameter|up to 5.4 m
Liftoff mass|780 tonnes
Payload mass|9.6 tonnes
- Ariane 5 ECA: new elements
- Ariane 5 ECA is an improved Ariane 5 Generic launcher. Although it has the same general architecture, a number of major changes were made to the basic structure of the Ariane 5 Generic version to increase thrust and enable it to carry heavier payloads into orbit.
- Solid boosters (EAP)
- The EAP boosters’ upper segment of the Ariane 5 ECA (also known as segment S1) carries 10% (2.5 tonnes) more propellant. This extra propellant gives the Ariane 5 ECA an additional 50 tonnes of thrust in the first 20 seconds following liftoff. This means that together the twin boosters deliver a thrust of 1300 tonnes at liftoff, nearly 10 times the level delivered by the new engine of the central stage.
- Main stage (EPC and Vulcain 2 engine)
- An improved version of the Vulcain engine was developed and used on the Ariane 5 ECA version. The Vulcain cryogenic engine was modified to increase its thrust by 20%, up to 137 tonnes. This new Vulcain 2 operates under slightly higher pressure with a mixture ratio that has 20% more liquid oxygen than the Vulcain 1. Because of this change in the mixture, a new oxygen turbopump was developed. In addition, the Vulcain 2 turbopump exhausts are reinjected into the main system, thus improving engine performance at high altitude. The Vulcain 2 engine is a key contributor to the additional lift capability of the new Ariane 5 ECA version into GTO.
- To hold the extra liquid oxygen needed for the EPC core stage, the capacity of the liquid oxygen tank has been increased by 16 tonnes. This was achieved by relocating the common tank bulkhead between the liquid oxygen tank and the liquid hydrogen tank of the Ariane 5 Generic EPC stage and reinforcing the structure elements.
Payloads:
Arabsat 5A:
COMS 1:
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Arabsat 5A was built by Astrium and Thales Alenia Space within the scope of a turnkey contract with satcom operator Arabsat, based in Riyadh, Saudi Arabia. Astrium provides the Eurostar 3000 platform and is responsible for satellite integration, while Thales Alenia Space supplies the payload.
The fifth-generation Arabsat 5A will provide telecommunications and TV broadcasting services in the Middle East and North Africa. Positioned at 30.5 degrees East, Arabsat 5A has a design life exceeding 15 years.
The fifth-generation Arabsat 5A will provide telecommunications and TV broadcasting services in the Middle East and North Africa. Positioned at 30.5 degrees East, Arabsat 5A has a design life exceeding 15 years.
COMS 1:
The launch of South Korea’s COMS satellite carries on a collaboration that started with the launch of the scientific microsats Kitsat A and Kitsat B for SATREC, Satellite Technology Research Center, and continued with the launch of the Koreasat 3 communications satellite for the operator Korea Telecom.
COMS, the Communication, Ocean and Meteorological Satellite, will weigh about 2 460 kg at launch. It is fitted with three payloads to carry out meteorological observation, ocean surveillance and experimental broadband multimedia communications services, based on its orbital position. Program prime contractor Astrium built COMS using a Eurostar 3000 platform, fitted with a meteorological imaging system and an ocean observation payload. The experimental telecom payload was supplied by KARI.
COMS, the Communication, Ocean and Meteorological Satellite, will weigh about 2 460 kg at launch. It is fitted with three payloads to carry out meteorological observation, ocean surveillance and experimental broadband multimedia communications services, based on its orbital position. Program prime contractor Astrium built COMS using a Eurostar 3000 platform, fitted with a meteorological imaging system and an ocean observation payload. The experimental telecom payload was supplied by KARI.
Arabsat 5A
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COMS 1
Customer:
| THALES ALENIA SPACE FOR ARABSAT| KARI (KOREA AEROSPACE RESEARCH INSTITUTE)Prime contractor:
| Astrium and Thales Alenia Space| AstriumMission:
| Communications satellite| Geostationary multi-missions observationMass:
| Total mass at lift-off 4 939 kg| Total mass at lift-off 2 460 kgStabilization:
| 3 axis stabilized| 3 axisDimensions:
| 2.1 x 2.35 x 4.5 m| 2.8 x 1.8 x 2.9 mSpan in orbit:
| 39.4 m| 17.2 mPlatform:
| EUROSTAR E3000| EUROSTAR E3000Payload:
| 24 Ku-band transponders and 28 C-band transponders|
- experimental telecommunications,
- meteorological observations,
- surveillance of the oceans
On-board power:
| 12 kW (end of life)| 2.5 kW (end of life)Life time:
| 15 years| 10 yearsOrbital position:
| 30.5° East| 128.2° EastCoverage area:
| The Middle East and Africa| |
|
Links:
- O-F Calendar Event for the launch with event timer
- Arianespace: Ariane 5 launcher
- ESA: Ariane 5 ECA launcher
- Arabsat 5A coverage area (#1 footprints), (#2 footprints)
- Arianespace - VideoCorner > Livestream video coverage
- Arianespace’s second Ariane 5 for launch in 2010 enters its assembly process at the Spaceport
- The second Ariane 5 for launch in 2010 completes its initial build-up
- Arabsat 5A is delivered to French Guiana for its Ariane 5 flight
- Arabsat-5A and COMS begin their preparation for Arianespace’s second Ariane 5 mission of 2010
- The Ariane 5 for Arianespace’s upcoming mission is ready to receive its Arabsat-5A and COMS satellite payloads
- Maintaining the mission pace: three Ariane 5s are at the Spaceport in French Guiana
Launch kit (PDF)Launch preparations:
Timeline:
Arianespace’s second Ariane 5 for launch in 2010 enters its assembly process at the Spaceport.
The second Ariane 5 for launch in 2010 completes its initial build-up.
Arabsat 5A is delivered to French Guiana for its Ariane 5 flight.
The Ariane 5 is ready to receive Arabsat-5A and COMS satellite payloads.
Date
|
Event
March 1
| Ariane 5 EPC ErectionMarch 2
| Ariane 5 EAP transfer and positionningMarch 3
| Ariane 5 Integration EPC/EAPMarch 10
| Ariane 5 ESC-A and VEB ErectionMarch 11
| Arrival in Kourou of ARABSAT 5A and beginning of preparation campaign in building S5 CMarch 11
| Arrival in Kourou of COMS and beginning of preparation campaign in building S5 CMay 26-31
| ARABSAT 5A filling operations in S5 A buildingJune 2
| Ariane 5 Roll-out from BIL to BAFJune 2
| ARABSAT 5A integration on adaptor (ACU)June 5-8
| COMS filling operations in S5 B buildingJune 9
| ARABSAT 5A transfer to Final Assembly Building (BAF) June 10
| ARABSAT 5A integration on Sylda and COMS integration on adaptorJune 11
| Fairing integration on Sylda - COMS transfer to Final Assembly Building (BAF)June 14
| COMS integration on launcherJune 15
| Upper composite integration with ARABSAT 5A on launcherJune 16
| ESC-A final preparations and payloads controlJune 17
| Launch rehearsalJune 18
| Arming of launch vehicleJune 21
| Arming of launch vehicle; Launch readiness review (RAL) and final preparation of launcherJune 22
| Roll-out from BAF to Launch Area (ZL), launch vehicle connections and filling of the EPC liquid Helium sphereJune 23
| Launch countdown including EPC and ESC-A filling with liquid oxygen and liquid hydrogenArianespace’s second Ariane 5 for launch in 2010 enters its assembly process at the Spaceport.
The second Ariane 5 for launch in 2010 completes its initial build-up.
Arabsat 5A is delivered to French Guiana for its Ariane 5 flight.
The Ariane 5 is ready to receive Arabsat-5A and COMS satellite payloads.
Launch events:
Timeline:
T [hh:mm:ss]
|{colsp=3}
Event
–11:30:00|{colsp=3}Start of final countdown
–07:30:00|{colsp=3}Check of electrical systems
–04:50:00|{colsp=3}Start of filling of main cryogenic stage with liquid oxygen and hydrogen
–03:20:00|{colsp=3}Chilldown of Vulcain main stage engine
–01:10:00|{colsp=3}Check of connections between launcher and telemetry, tracking and command systems
–00:07:00|{colsp=3}"All systems go" report, allowing start of synchronized sequence
–00:04:00|{colsp=3}Tanks pressurized for flight
–00:01:00|{colsp=3}Switch to onboard power mode
–00:00:05.5|{colsp=3}Command issued for opening of cryogenic arms
–00:00:04|{colsp=3}Onboard systems take over
–00:00:03|{colsp=3}Unlocking of guidance systems to flight mode
00:00:00|HO Ignition of the cryogenic main stage engine (EPC)| ALT [km] | V.rel. [m/s]
+00:00:07.05|Ignition of solid boosters|
+00:00:07.3|Liftoff|
+00:00:12.5|End of vertical climb and beginning of pitch rotation (10 seconds duration)|
+00:00:17|Beginning of roll manoeuvre|
+00:02:20|Jettisoning of solid boosters|
+00:03:09|Jettisoning of fairing|
+00:07:31|Acquisition by Natal tracking station|
+00:08:55|Shut-down of main cryogenic stage|
+00:09:01|Separation of main cryogenic stage|
+00:09:05|Ignition of upper cryogenic stage (ESC-A)|
+00:13:30|Acquisition by Ascension tracking station|
+00:18:28|Acquisition by Libreville tracking station|
+00:23:15|Acquisition by Malindi tracking station|
+00:24:40|Shut-down of ESC-A / Injection|
+00:26:39|Separation of ARABSAT 5A satellite|
+00:30:11|Separation of Sylda 5|
+00:32:38|Separation of COMS satellite|
+00:49:52|End of Arianespace Flight mission|
–11:30:00|{colsp=3}Start of final countdown
–07:30:00|{colsp=3}Check of electrical systems
–04:50:00|{colsp=3}Start of filling of main cryogenic stage with liquid oxygen and hydrogen
–03:20:00|{colsp=3}Chilldown of Vulcain main stage engine
–01:10:00|{colsp=3}Check of connections between launcher and telemetry, tracking and command systems
–00:07:00|{colsp=3}"All systems go" report, allowing start of synchronized sequence
–00:04:00|{colsp=3}Tanks pressurized for flight
–00:01:00|{colsp=3}Switch to onboard power mode
–00:00:05.5|{colsp=3}Command issued for opening of cryogenic arms
–00:00:04|{colsp=3}Onboard systems take over
–00:00:03|{colsp=3}Unlocking of guidance systems to flight mode
00:00:00|HO Ignition of the cryogenic main stage engine (EPC)| ALT [km] | V.rel. [m/s]
+00:00:07.05|Ignition of solid boosters|
0
|
0
+00:00:07.3|Liftoff|
0
|
0
+00:00:12.5|End of vertical climb and beginning of pitch rotation (10 seconds duration)|
0.090
|
37.5
+00:00:17|Beginning of roll manoeuvre|
0.345
|
76.6
+00:02:20|Jettisoning of solid boosters|
67.9
|
1997
+00:03:09|Jettisoning of fairing|
107.7
|
2184
+00:07:31|Acquisition by Natal tracking station|
210.0
|
4904
+00:08:55|Shut-down of main cryogenic stage|
210.7
|
6831
+00:09:01|Separation of main cryogenic stage|
210.4
|
6858
+00:09:05|Ignition of upper cryogenic stage (ESC-A)|
210.1
|
6861
+00:13:30|Acquisition by Ascension tracking station|
180.3
|
7557
+00:18:28|Acquisition by Libreville tracking station|
199.3
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8381
+00:23:15|Acquisition by Malindi tracking station|
434.8
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9174
+00:24:40|Shut-down of ESC-A / Injection|
581.8
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9416
+00:26:39|Separation of ARABSAT 5A satellite|
852.0
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9187
+00:30:11|Separation of Sylda 5|
1485.7
|
8692
+00:32:38|Separation of COMS satellite|
2006.2
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8325
+00:49:52|End of Arianespace Flight mission|
6318.8
|
6118
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