Author Topic: Ariane 5 (VA247): Hellas-Sat-4/SaudiGeoSat-1 and GSAT 31 (21:01 UTC) Feb 5, 2019  (Read 11024 times)

Offline jacqmans

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Lockheed Martin Completes Hellas-Sat4/SaudiGeoSat-1 Satellite Assembly and Ships to Environmental Testing

DENVER, Nov. 30, 2017 /PRNewswire/ -- Lockheed Martin (NYSE: LMT) has completed the major
assembly of Hellas-Sat-4/SaudiGeoSat-1 and has shipped the communications satellite to its Sunnyvale,
California facility to undergo critical environmental testing.

The first of the modernized LM 2100 satellites, Hellas-Sat-4/SaudiGeoSat-1 is being built for Arabsat/Hellas
Sat and King Abdulaziz City for Science and Technology. It will provide advanced telecommunications
capabilities, including television, internet, telephone and secure military communications to customers in the
Middle East, Africa and Europe.

Hellas-Sat4/SaudiGeoSat-1 is the first of two LM 2100 satellites in the Arabsat-6G program. The second is
Arabsat-6A.

During environmental testing, the satellite will undergo a series of tests to simulate the launch and space
conditions to ensure a successful mission. This testing includes simulating the launch environments with
acoustic and vibration testing, simulating the harsh space environment with vacuum and extreme temperature
testing, and radio frequency compatibility and performance testing to validate the payload meets critical
performance expectations.

"Environmental testing is an essential set of activities to ensure the satellite can operate as designed in the
extreme conditions of space and will meet our customers' needs," said Joe Rickers, Lockheed Martin's
Arabsat-6G program manager. "Now that assembly of the Hellas-Sat-4/SaudiGeoSat-1 satellite is complete
and environmental testing is on the horizon, we're one step closer to providing greatly improved
communications capabilities for our customers."

The satellite recently went through comprehensive testing as a part of a baseline integrated systems test at the
company's Littleton, Colorado facility where the satellite was designed, assembled and integrated with its
payload. Remaining baseline testing will be completed before environmental testing.

The rigorous baseline test ensures the fully integrated satellite is working properly before moving on to environmental testing. While in California, but prior to the environmental tests, the satellite's large communications antennae and large flexible solar arrays will be installed. The four deployable antennas use a new design that allows them to be tuned with higher accuracy and efficiency. The multi-mission modular solar arrays incorporate three key features: higher power, less mass and compact stowage. This compact flexible array design delivers 50 percent more power than previous rigid array designs at 30 percent less mass.

The satellite is scheduled for delivery to the launch site in third quarter 2018.
« Last Edit: 02/02/2019 01:19 pm by input~2 »

Offline jacqmans

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Re: Ariane 5 (VA2xx): Hellas-Sat-4, (SaudiGeoSat-1) late 2018
« Reply #1 on: 12/29/2017 07:31 am »
Hellas-Sat-4 Load into Container
 

In a Lockheed Martin clean room near Denver, Colorado, technicians load the Hellas-Sat-4/SaudiGeoSat-1 satellite into its shipping container prior to transporting it to California for environmental testing.

Offline zubenelgenubi

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Cross-post re: HS4-SGS1 launch date:
On January 23, 2019, the launch of the commercial satellite Hellas Sat 4

http://www.skai.gr/news/technology/article/390065/ton-ianouario-i-ektoxeusi-tou-hellas-sat-4/#ixzz5XQx9j3z
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Offline Jester

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VA247 is Hellsat-4 with GSAT-31

Offline zubenelgenubi

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Seeing a mention elsewhere that VA247 launch has been delayed to February 5.
True?

Also, it's a few days over 1 month to January 23, and there has been no news (that I have found) of the delivery of either payload to Kourou.
« Last Edit: 01/03/2019 12:25 am by zubenelgenubi »
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Offline GWR64

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yes I've already searched and found nothing.
Also there are still about two weeks holiday between.

Offline GWR64

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Quote
SES-STA-20181114-03202 E E7541
Date Effective: 12/12/2018
Class of Station:
Grant of Authority
Special Temporary Authority
Lockheed Martin Corporation
On December 12, 2018, Lockheed Martin Corporation was granted special temporary authority for 30 days, beginning January 15, 2019, to
operate its fixed earth station in Carpentersville, NJ to provide command functions during the electric propulsion monitoring for the HellasSat
4/SaudiGeoSat 1 (HS4) satellite at the 39.0° E.L. orbital location in the 5927.25-5928.75 MHz and 6421.25-6422.75 MHz (Earth-to-space)
frequency bands.

http://licensing.fcc.gov/ibfsweb/ib.page.FetchPN?report_key=1591588

Lockheed Martin requested a temporary radio license for HS4-SGS1.
The very heavy HS4-SGS1 is to reach the GEO with chemical and electric engines.

Offline Jester

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AFAIK VA247 is currently planned for early February (not confirmed) both spacecraft should normally arrive early January (also TBC)

Offline GWR64

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Seeing a mention elsewhere that VA247 launch has been delayed to February 5.
True?

Also, it's a few days over 1 month to January 23, and there has been no news (that I have found) of the delivery of either payload to Kourou.

Maybe I found the source for "VA247 on February 5th".

https://ria.ru/20181214/1547972344.html

Google translate:
Quote
MOSCOW, December 14 - RIA News. The transfer of the launch of the first British communications satellites OneWeb from the Kourou cosmodrome using the Russian Soyuz-ST rocket is associated with a delayed launch from the same cosmodrome of the Indian apparatus, a source in the Russian rocket and space industry told RIA Novosti on Friday.
...
Earlier it was reported that the launch was postponed at the request of the British side.
"The launch was delayed due to the launch of the Indian satellite GSAT-31 on the Ariane-5 rocket on February 5. The reconfiguration of the spaceport equipment and the preparation for the new launch, which will be Soyuz-ST with the first OneWeb devices, takes about two weeks, "- said the agency interlocutor.

Is this the fault of Isro or Arianespace?

Offline Jester

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HS-4 arrived friday

Offline GWR64

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https://twitter.com/arianespaceceo/status/1082310657838669826

Quote
Stéphane Israël
‏ @arianespaceceo

It’s a new year at the Spaceport in French Guiana, which welcomed on Jan 4 the first of two satellite passengers for #Arianespace’s initial #Ariane5 flight in 2019! HS-4/SGS-1 will be launched Feb 5 at the service of @Arabsat & @KACST. #MissiontoSuccess 🚀 @LockheedMartin #VA247

Offline Josh_from_Canada

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Offline zubenelgenubi

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SFN Launch Schedule, updated January 9, reports:
Launch time is approximately 20:00 UTC = 17:00 GFT (local time)
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Offline GWR64

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Offline jacqmans

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January 10, 2019 

Both satellites for Arianespace’s year-opening Ariane 5 launch are now in French Guiana


Building on Arianespace’s operational success in 2018, payload preparations for the company’s first flight in the new year are moving ahead with this week’s delivery of the mission’s second satellite, GSAT-31, to French Guiana – joining the Saudi Geostationary Satellite 1/Hellas Sat 4 (HS-4/SGS-1), which arrived earlier in January.

This newly-delivered passenger for Ariane 5 was flown to South America aboard an Antonov An-124 cargo jetliner, which landed at Félix Eboué Airport near the French Guiana capital city of Cayenne. After the unloading process, the protective container with GSAT-31 was readied for transportation by road to the Spaceport to begin payload processing. Its HS-4/SGS-1 co-passenger for the upcoming Ariane 5 mission underwent these same procedures following its own delivery on January 4.

Designated Flight VA247 in Arianespace’s numbering system, the year-opening Ariane 5 flight will lift off on February 5 – kicking off a fast-paced operational schedule that will include up to 12 missions using the company’s launcher family, with the heavy-lift Ariane 5 joined by the medium Soyuz and lightweight Vega.

Arianespace’s 2019 mission activity initiated by Flight VA247 will build on the company’s 11 launches last year, which placed nearly 57 metric tons into orbit for 13 different customers. In parallel, Arianespace will continue preparation activity during 2019 for the introduction of its next-generation launch vehicles: Vega C and Ariane 6.

http://www.arianespace.com/mission-update/va247-payload-arrival/
« Last Edit: 01/11/2019 01:18 pm by jacqmans »

Offline jacqmans

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Offline jacqmans

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Hellas-Sat-4/SaudiGeoSat-1

Lockheed Martin photos

Offline jacqmans

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Hellas-Sat-4/SaudiGeoSat-1

Lockheed Martin photos

Offline jacqmans

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« Last Edit: 01/16/2019 01:27 pm by jacqmans »

Offline Lewis007

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VA247 launch sticker

Offline Lewis007

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Offline zubenelgenubi

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SFN Launch Schedule, update January 28
VA247 launch window on February 5: 2101-2149 UTC = 18:01-18:49 GFT (Local time)
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Offline SciNews

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Press release: For its first mission of 2019, Arianespace to launch two telecommunications satellites with Ariane 5
http://www.arianespace.com/press-release/for-its-first-mission-of-2019-arianespace-to-launch-two-telecommunications-satellites-with-ariane-5/

Offline bolun

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Do we have the Ariane-5ECA serial number?

Offline Rik ISS-fan

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Do we have the Ariane-5ECA serial number?
Ariane space news release about this launch
VA247 = Ariane 5 launch 103 ; 70th Ariane 5 ECA.
AFAIK VA247 is the serial number.
« Last Edit: 01/31/2019 08:21 pm by Rik ISS-fan »

Offline russianhalo117

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Do we have the Ariane-5ECA serial number?
Ariane space news release about this launch
VA247 = Ariane 5 launch 103 ; 70th Ariane 5 ECA.
AFAIK VA247 is the serial number.
That is the mission number not the Launcher serial which is different format. Satori ask Jester or Jaq as they tend to post them time to time.

Offline Jester

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Do we have the Ariane-5ECA serial number?
Ariane space news release about this launch
VA247 = Ariane 5 launch 103 ; 70th Ariane 5 ECA.
AFAIK VA247 is the serial number.
That is the mission number not the Launcher serial which is different format. Satori ask Jester or Jaq as they tend to post them time to time.

Should be L5106

Offline bolun

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February 1, 2019

Launch readiness confirmed for Flight VA247’s Ariane 5: Approval is given for the first Arianespace mission of 2019

Arianespace’s year-opening Ariane 5 flight has been authorized for liftoff on February 5 following today’s launch readiness review, which was conducted at the Spaceport in French Guiana.

This milestone confirmed that the heavy-lift launcher and its dual-satellite payload – comprised of Saudi Geostationary Satellite 1/Hellas Sat 4 (HS-4/SGS-1) and GSAT-31 – are flight-ready, along with the Spaceport’s infrastructure and the network of downrange tracking stations.

With approval granted, Ariane 5 is cleared for Monday’s rollout from the Spaceport’s Final Assembly Building to its ELA-3 launch zone. Liftoff will occur the following day during a 61-minute launch window that opens at 6:01 p.m. local time in French Guiana.

Ariane 5 will deliver a total payload lift performance of 10,018 kg. on the mission to geostationary orbit, which is designated Flight VA247. This total includes the two satellite passengers, plus the workhorse vehicle’s dual-payload deployment system and integration hardware.

http://www.arianespace.com/mission-update/launch-readiness-confirmed-for-flight-va247s-ariane-5-approval-is-given-for-the-first-arianespace-mission-of-2019/

Offline Adonis1

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Offline input~2

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Quote
Composed of two payloads, Saudi Geostationary Satellite 1/Hellas Sat 4 also called HS-4/SGS-1, is a geostationary condosat for KACST (King Abdulaziz City for Science and Technology- Saudi Arabia) and Hellas Sat (Greece – Cyprus) which aims at providing telecommunications services in the Middle East, South Africa and Europe.
The Saudi Geostationary Satellite 1 communications payload will provide advanced Ka-band spot beam communications services for the Kingdom of Saudi Arabia’s KACST, including secure communications for the Gulf Cooperative Council region.
The Hellas Sat 4 communications payload, on the other hand, will offer advanced Ku-band regional beam communications services for Arabsat’s subsidiary Hellas Sat, a Greek-Cypriot satellite operator which provides services to leading Direct-to-Home (DTH) operators by delivering contents to more than three million households.
http://www.arianespace.com/press-release/for-its-first-mission-of-2019-arianespace-to-launch-two-telecommunications-satellites-with-ariane-5/
« Last Edit: 02/02/2019 10:24 am by input~2 »

Offline russianhalo117

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YouTube video has wrong title and is about HS-3.

Offline GWR64

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YouTube video has wrong title and is about HS-3.

 ??? don't understand

____________________________________

Arianespace Flight VA247 – Saudi Geostationary Satellite 1/Hellas Sat 4



Offline GWR64

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HS-4/SGS-1 on the Launch kit:
Quote
CUSTOMERS KACST (King Abdulaziz City for Science and Technology) and Hellas Sat (Arabsat)
MANUFACTURER Lockheed Martin Space
MISSIONS Telecommunications
MASS AT LAUNCH 6,495 kg.
PLATFORM Modernized A2100
ORBITAL POSITION 39° East
BATTERIES 2x Li-Ion
PAYLOAD Ku and Ka-band
COVERAGE AREA Europe, South Africa, Middle East
DESIGN LIFE More than 15 years (up to 23 years orbital maneuver)

HS-4 should reach the geo with chemical and electric engines.
Due to the high launch mass and the "up to 23 years orbital maneuver", I would guess
that there was a similar agreement as with Avanti for Hylas-4.
Later launch with a lighter partner.
Maximum fuel loading and the satellite may exceed the agreed mass.
Due to the additional chemical fuel, the GEO will reached faster.

Just a guess
« Last Edit: 02/03/2019 01:23 pm by GWR64 »

Offline chetan_chpd

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excuse me for my lack of 'satellite know-how', please answer-> "Hellas-Sat-4/SaudiGeoSat-1 is actually one satellite hardware shared by two different users?".

Offline starbase

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Right. Two communication payloads from two different operators share the same satellite bus, which is called a "condosat".

Quote
Composed of two payloads, Saudi Geostationary Satellite 1/Hellas Sat 4 also called HS-4/SGS-1, is a geostationary condosat for KACST (King Abdulaziz City for Science and Technology- Saudi Arabia) and Hellas Sat (Greece – Cyprus) which aims at providing telecommunications services in the Middle East, South Africa and Europe.

http://www.arianespace.com/press-release/for-its-first-mission-of-2019-arianespace-to-launch-two-telecommunications-satellites-with-ariane-5/
« Last Edit: 02/04/2019 12:50 pm by starbase »

Offline Lewis007

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Stéphane Israël posted some pics of the roll-out on Twitter.

Offline chetan_chpd

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Right. Two communication payloads from two different operators share the same satellite bus, which is called a "condosat".

Quote
Composed of two payloads, Saudi Geostationary Satellite 1/Hellas Sat 4 also called HS-4/SGS-1, is a geostationary condosat for KACST (King Abdulaziz City for Science and Technology- Saudi Arabia) and Hellas Sat (Greece – Cyprus) which aims at providing telecommunications services in the Middle East, South Africa and Europe.

http://www.arianespace.com/press-release/for-its-first-mission-of-2019-arianespace-to-launch-two-telecommunications-satellites-with-ariane-5/

thanks. is there any specific reason for this sharing?
1. both parties work with each other for serving common geo-location?
2. Lockheed Martin finds it economical to integrate two customer payloads?

Offline eeergo

thanks. is there any specific reason for this sharing?
1. both parties work with each other for serving common geo-location?
2. Lockheed Martin finds it economical to integrate two customer payloads?

Hellas-Sat is a subsidiary of Arabsat, the owner of Saudi-Geo-Sat-1, so the satellite is entirely owned by them.

A fraction of the transponders is oriented toward the Greco-Cypriot subsidiary's market, but the condosat framework ensures savings by using a shared spacecraft bus (i.e. propulsion, avionics, power...) in a project where none of the two parties need the full communications payload that could be accommodated on the satellite. Of course, geographically it works too - Greece, Cyprus and Arabia aren't so far apart for a single GEO slot, and their target markets in Europe, Africa and the Middle East either.
-DaviD-




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Offline worldtimedate

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Arianespace Flight VA247 – Launch Campaign :




Offline worldtimedate

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Arianespace Flight VA247 – GSAT-31 :


Arianespace Flight VA247 – Saudi Geostationary Satellite 1/Hellas Sat 4

Offline worldtimedate

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excuse me for my lack of 'satellite know-how', please answer-> "Hellas-Sat-4/SaudiGeoSat-1 is actually one satellite hardware shared by two different users?".

HellasSat 4/SaudiGeoSat 1 is a Greek geostationary communications satellite for Hellas Sat, which is owned by Arabsat.

Source :
HellasSat 4/SaudiGeoSat 1 :
https://space.skyrocket.de/doc_sdat/hellassat-4-saudigeosat-1.htm

Offline Steven Pietrobon

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Colour check.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Starting in less than two minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Webcast has begun.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Chris Bergin

It's wet.

Offline worldtimedate

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Live webcast has started.
T-11 Minutes

Offline Steven Pietrobon

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Launch vehicle and payloads.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-12 minutes. Five Ariane 5's this year.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-11 minutes. Talking about dual launch. 12 launches altogether this year.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-10 minutes. Board is green.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-9 minutes. Showing launch profile.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-8 minutes. Weather is a bit wet.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T-7 minutes. Start of synchronised sequence.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline worldtimedate

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GSAT-31 team at the Mission Control Center

Offline Steven Pietrobon

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Board is green.

T-6 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-5 minutes. Showing integration video.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-4 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-3 minutes. Talking about launch team.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-2 Minutes

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T-2 minutes. Cryo arms.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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- 7 min “All systems go” report, allowing start of synchronized sequence
- 4 min Tanks pressurized for flight
-1 min Switch to onboard power mode
- 05 s Opening command for the cryogenic arms
- 04 s Onboard systems take over
T-0 Reference time
+ 01 s Ignition of the cryogenic main stage (EPC)
+ 07.05 s Ignition of solid boosters (EAP)
+ 07.3 s Liftoff
+ 12.7 s End of vertical climb, beginning of pitch motion
+ 17.05 s Beginning of roll maneuver
+ 32.05 s End of roll maneuver
+ 2 min 24 s EAP separation
+ 3 min 21 s Fairing jettisoned
+ 7 min 47 s Acquisition by Natal tracking station
+ 8 min 41 s End of EPC thrust phase
+ 8 min 47 s EPC separation
+ 8 min 51 s Ignition of ESC-A stage
+ 13 min 37 s Acquisition by Ascension tracking station
+ 18 min 17 s Acquisition by Libreville tracking station
+ 23 min 00 s Acquisition by Malindi tracking station
+ 25 min 9 s Extinction of ESC-A stage
+ 25 min 11 s Injection
+ 27 min 21 s HS-4/SGS-1 satellite separation
+ 29 min 35 s SYLDA separation
+ 42 min 27 s GSAT-31 satellite separation

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T-1 minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Liftoff!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.


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T+1 minute. Into the clouds.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+2 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Bosster separation.

T+3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Fairing separation.

T+4 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+5 minutes. Trajectory nominal.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+6 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T_5 minutes

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T+7 minutes. 4.63 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+8 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Core separation.

T+9 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Core state separated

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T+10 minutes. 7.07 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+11 minutes. 7.22 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+12 minutes. Hellassat presentation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+13 minutes. Out of range of ground stations.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+14 minutes. Telemetry is back. 7.68 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+14 Minutes

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T+15 minutes. 7.84 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+16 minutes. KACST presentation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+15 Minutes.

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T+17 minutes. 8.15 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Do we have the serial number for this Ariane-5ECA? Thank you!

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T+18 minutes. 8.31 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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HS-4/SGS-1 satellite will be separated at T+27 Minutes

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T+19 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+20 minutes. 8.61 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+21 minutes. 8.76 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T + 22 Minutes. Vehicle Speed 8.62 k/s

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T+22 minutes. Hellassat and Arianespace relationship.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+23 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+24 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline worldtimedate

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HS-4/SGS-1 satellite will get separated after T+27 minutes
GSAT-31 satellite will get separated after T+ 42 Minutes
Vehicle speed is now 9.26 k/s at T+24 Minutes

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T+25 minutes.

Second stage cutoff.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+26 minutes. Separation in just over a minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+27 minutes.

First sat is away.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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First satellite will separate at T+27 minutes.
Vehicle speed is 9.07 km/s

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First satellite is separated.

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T+28 minutes. Upcoming events.

+ 29 min 35 s SYLDA separation
+ 42 min 27 s GSAT-31 satellite separation

Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+29 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Sylda separation.

T+30 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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ISRO GSAT-31 Project Director. Long wait to GSAT-31 separation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Previous ISRO satellites.

T+35 minutes. ISRO chairman.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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GSAT-31 will get separated at T+42 minutes

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GSAT-31 Satellite Presentation

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T+38 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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ISRO Chairman giving presentation on GSAT-31 Satellite.
5 Minutes left for GSAT-31 to be separated.
Vehicle speed is brought down to 7.57 km / s

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T+40 minutes. ISRO and Arianespace relationship video.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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One minute to separation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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S. Umamaheshwaran, Department of Space Secretary
1 minute left for separation.

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Confirmation of separation!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Congratulations going around.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.


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Late view of the separation over India.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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GSAT-31 Separation View

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Launch replays.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Arianespace CEO, France. Confirming successful separations.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Arianespace CEO Stephane Israel is giving speech
« Last Edit: 02/05/2019 08:50 pm by worldtimedate »

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In 1981 Ariane 1 launched ISRO`s first Geostationary Satellite APPLE

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KACST Director of Saudi Geostationary Satellite Program.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Hellas Sat CEO.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Lockheed Martin Space Communication Satellite Solutions Vice President.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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ISRO SDSC SHAR Director.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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GSAT-30 in June or July.

Arianespace chairman wrapping up. Oneweb on 22 February.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Wrapping up from the broadcast studio.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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End of webcast.

Congratulations to Arianespace, HellasSat, KACST and ISRO for the successful launch!
« Last Edit: 02/05/2019 09:15 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Two HR launchpics posted by by Arianespace

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February 5, 2019 

A dual-passenger success: Ariane 5 delivers on Arianespace’s first launch of the year

 
Arianespace opened its 2019 mission activity by successfully orbiting a pair of telecommunications spacecraft – Saudi Geostationary Satellite 1/Hellas Sat 4 (HS-4/SGS-1) and GSAT-31 – using the company’s workhorse Ariane 5 launch vehicle.

Today’s flight to geostationary orbit, performed from the Spaceport in French Guiana, delivered a payload lift performance estimated at 10,018 kg. – which included the two spacecraft, along with the dispenser system and integration hardware in Ariane 5’s dual-passenger configuration.

Arianespace CEO Stéphane Israël confirmed the success in post-launch comments from the Spaceport’s Jupiter control room. “For the first Ariane 5 launch of the year, our heavyweight vehicle has once more performed flawlessly,” he said. “Congratulations to all!”

“Condosat” capabilities

Deployed first in the flight sequence 27 minutes after liftoff, HS-4/SGS-1 is a geostationary “condosat” for Saudi Arabia’s King Abdulaziz City for Science and Technology (KACST) and Greek-Cypriot satellite operator Hellas Sat, an Arabsat subsidiary. Designed, assembled and integrated by Lockheed Martin Space, HS-4/SGS-1 will operate from an orbital position of 39 deg. East, with a coverage area that includes Europe, South Africa and the Middle East.

The Arianespace CEO acknowledged the direct customer for HS-4/SGS-1, Arabsat, and called this 11th Arianespace mission at the service of the Riyadh, Saudi Arabia-based telecommunications operator a “new bright success.”

The Saudi Geostationary Satellite 1 communications payload will provide advanced Ka-band spot beam communications services for KACST, a government organization responsible for promoting science and technology in Saudi Arabia. The Hellas Sat 4 communications payload will deliver advanced Ku-band regional beam communications services for the Arabsat subsidiary.

23 launches and counting for ISRO

GSAT-31 was carried in Ariane 5’s lower payload position and released second in the sequence for today’s mission, which is designated Flight VA247 in Arianespace’s numbering system – representing the 247th launch of an Ariane-series launch vehicle.

The spacecraft was designed and manufactured by the Indian Space Research Organisation (ISRO) and will provide Ku-band communications services from an orbital slot at 48 deg. East, helping “bridge the digital divide” with coverage across the Indian subcontinent.

Israël noted that GSAT-31 was the 23rd ISRO satellite orbited by Arianespace and Ariane-series launchers, tracing the relationship back to India’s APPLE small experimental communications spacecraft, lofted in 1981 by an Ariane 1 version. He added: “Arianespace is honored ISRO has entrusted Ariane 5 for two launches back-to-back, with the last Ariane 5 of 2018 launching GSAT-11, and today the first one of the year 2019, which orbited GSAT-31!”

With today’s success, Arianespace kicks off a busy launch schedule in 2019 – which targets up to 12 missions from the Spaceport with the heavyweight Ariane 5, medium-lift Soyuz and lightweight Vega.

http://www.arianespace.com/mission-update/ariane-5-va247-success/

Offline jacqmans

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February 5, 2019 

Arianespace orbits two telecommunications satellites on first Ariane 5 launch of 2019

 
Arianespace has successfully orbited two telecommunications satellites: the Saudi Geostationary Satellite 1/Hellas Sat 4 condosat for operators KACST and Hellas Sat; and GSAT-31 for the Indian Space Research Organisation (ISRO).

Arianespace’s first launch of the year took place on Tuesday, February 5 at 6:01 p.m. (local time) from the Guiana Space Center (CSG), Europe’s Spaceport in French Guiana (South America).

Today’s launch was the 103rd Ariane 5 mission, bringing the number of geostationary satellites launched by Arianespace to 374.

Following the announcement of this first successful launch of the year, Stéphane Israël, Chief Executive Officer of Arianespace, said: “This year we kick off the 40th anniversary celebration of the first launch of Europe’s Ariane rocket with a successful launch of Ariane 5. Through this emblematic flight, Arianespace underscores the reliability of our heavy launcher, the benchmark in the launch segment for geostationary telecommunications satellites. By carrying out a mission for long-lasting customers from three continents – Arabsat, KACST, Hellas Sat and ISRO – we continue to prove the attractiveness of Arianespace’s launch services for customers from around the world, both institutional and commercial.”

Supporting telecommunications on three continents

The Saudi Geostationary Satellite 1/Hellas Sat 4 (also called HS-4/SGS-1) satellite comprises two payloads, with coverage zones encompassing Europe, the Middle East and South Africa:
– Saudi Geostationary Satellite 1 will provide advanced communications services for Saudi Arabia’s KACST (King Abdulaziz City for Science and Technology), as well as secure communications for countries belonging to the Gulf Cooperative Council region.
– Hellas Sat 4 will provide advanced regional communications services for Arabsat’s subsidiary, Hellas Sat, the Greek-Cypriot satellite operator.

After launching GSAT-11 for ISRO on the final Ariane 5 mission of 2018, Arianespace has now orbited GSAT-31 on its first mission in 2019.

With GSAT-31, ISRO continues to develop its space infrastructure to reduce the digital divide in India. The next ISRO geostationary satellite to be launched by Arianespace will be GSAT-30.

Arianespace confirms its leadership in the geostationary launch market

This first Ariane 5 mission of the year placed two satellites in geostationary transfer orbit. Arianespace confirmed its business momentum and leadership in the geostationary telecommunications satellite market during 2018 by signing launch contracts for eight more satellites, bringing the total number of geostationary telecommunications satellites in its backlog of launch orders to 26.

Up to five Ariane 5 dual launches are planned in 2019, to orbit a total of 10 geostationary satellites.

About Arianespace and Ariane 5

Arianespace uses space to make life better on Earth by providing launch services for all types of satellites into all orbits. It has orbited more than 590 satellites since 1980, using its family of three launchers, Ariane, Soyuz and Vega, from launch sites in French Guiana (South America) and Baikonur, Kazakhstan. Arianespace is headquartered in Evry, near Paris, and has a technical facility at the Guiana Space Center, Europe’s Spaceport in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore.

Arianespace is a subsidiary of ArianeGroup, which holds 74% of its share capital, with the balance held by 15 other shareholders from the European launcher industry.

Designed by French CNES space agency within the scope of a European Space Agency program with 12 participating countries, Ariane 5 is built by ArianeGroup as industrial prime contractor.

http://www.arianespace.com/press-release/arianespace-orbits-two-telecommunications-satellites-on-first-ariane-5-launch-of-2019/

Offline jacqmans

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Feb 06, 2019

India’s communication satellite GSAT-31 launched successfully from French Guiana

India’s latest communication satellite, GSAT-31 was successfully launched from the Spaceport in French Guiana during the early hours today.

The launch vehicle Ariane 5 VA-247 lifted off from Kourou Launch Base, French Guiana at 2:31 am (IST) carrying India’s GSAT-31 and Saudi Geostationary Satellite 1/Hellas Sat 4 satellites, as scheduled.

After a 42-min flight, GSAT-31 separated from the Ariane 5 upper stage in an elliptical Geosynchronous Transfer Orbit with a perigee (nearest point to Earth) of 250 km and an apogee (farthest point to Earth) of 35,850 km, inclined at an angle of 3.0 degree to the equator. 

With a lift-off mass of 2536 kg, GSAT-31 will augment the Ku-band transponder capacity in Geostationary Orbit. The satellite will provide continuity to operational services on some of the in-orbit satellites. GSAT-31 derives its heritage from ISRO’s earlier INSAT/GSAT satellite series.

“GSAT-31 has a unique configuration of providing flexible frequency segments and flexible coverage.  The satellite will provide communication services to Indian mainland and islands” ISRO Chairman Dr K Sivan said.

Dr. Sivan also remarked that “GSAT-31 will provide DTH Television Services, connectivity to VSATs for ATM, Stock-exchange, Digital Satellite News Gathering (DSNG) and e-governance applications. The satellite will also be used for bulk data transfer for a host of emerging telecommunication applications.”

After separation from Ariane-5 upper stage, the two solar arrays of GSAT-31 were automatically deployed in quick succession and ISRO's Master Control Facility at Hassan in Karnataka took over the command and control of GSAT-31 and found its health parameters normal.

In the days ahead, scientists will undertake phase-wise orbit-raising manoeuvres to place the satellite in Geostationary Orbit (36,000 km above the equator) using its on-board propulsion system.

During the final stages of its orbit raising operations, the antenna reflector of GSAT-31 will be deployed.  Following this, the satellite will be put in its final orbital configuration.  The satellite will be operational after the successful completion of all in-orbit tests.

https://www.isro.gov.in/update/06-feb-2019/india%E2%80%99s-communication-satellite-gsat-31-launched-successfully-french-guiana

Offline jacqmans

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Kingdom launches first Saudi communications satellite (SGS-1) successfully, HRH the Crown Prince signed the final piece to be placed on the satellite with the words, “Above the Clouds”

The Kingdom of Saudi Arabia, represented by the King Abdul-Aziz City for Science and Technology (KACST), announced today that the first Saudi satellite for communications (SGS-1) has been launched successfully from the Guiana Space Centre on an Ariane 5 rocket. HRH Prince Mohammed bin Salman bin Abdulaziz, the Crown Prince, Vice President of the Council of Ministers and Minister of Defense, had signed the final piece to be placed on the Saudi satellite before its launch with the words, “above the clouds.”

Eng. Khaled bin Abdulaziz Al-Falih, the Minister of Energy, Industry and Mineral Resources and Chairman of the board of directors of KACST, explained that such a spectacular national achievement has come as a result of the great support provided to the Kingdom’s research and development sector by the Custodian of the Two Holy Mosques, King Salman bin Abdulaziz Al Saud, and HRH the Crown Prince. The launch is part of Saudi Vision 2030, which aims at localizing strategic technologies in the Kingdom, increasing local content and enabling Saudi young people to work with advanced state-of-the-art technologies in the field of satellite development and manufacturing.

Richard Edwards, Executive Vice President of Lockheed Martin International lauded his company’s strategic partnership with the Kingdom of Saudi Arabia, saying, “The successful launch of this satellite is a first step in our unique partnership with King Abdulaziz City for Science and Technology and the Kingdom of Saudi Arabia, which is established on innovation, science, technology and HR development”.

The development of the satellite (SGS-1), which was created in collaboration with Lockheed Martin, included the qualification of a number of Saudi engineers in compliance with the qualification standards and requirements adopted by the company for its employees across all the operational phases of manufacturing and testing, with the target of conveying to them the expertise and know-how required for manufacturing and testing giant satellite technologies used for space communications in geostationary orbit.

The satellite aims to employ advanced Ka-band capabilities to enable space communications at ultra-fast speeds, as part of the national strategic plan to fulfill the Kingdom’s domestic requirements, provide high-specification communications services specifically custom-made for the government sector and, at a commercial level, exporting these services to the MENA region, Europe, Africa and Central Asia. The satellite also aims to improve local capabilities and human resources and creating job opportunities in the space industry.

The Saudi communications satellite, which will be operated and controlled by Saudi national personnel, has a multibeam payload that provides a total throughput capacity of over 34 gigabits per second, as well as highly efficient solar panels that generate power with a total capacity exceeding 20 Kw. The satellite has a processing unit that is capable of altering the ascending and descending signal configurations, a distribution unit that is able to pass communications to users, bypassing ground stations. In addition, it carries a communication Ku-band payload dedicated to Halasat, one of Arabsat’s affiliate companies.

The Saudi communications satellite employs hybrid (electric and chemical) propelling systems which has helped to reduce the satellite’s weight while increasing its life expectancy. It weighs 6.5 tons and has a life expectancy of over 20 years. It also uses advanced technologies enabling it to provide highly secured and anti-interference telecommunications.
The Saudi communications satellite (SGS-1), which is the first satellite of its kind to be owned by the Kingdom, will offer multiple applications that include broadband telecommunications, highly secured communications, as well as communications dedicated for remote areas and disaster-stricken areas. Finally, the SGS-1 satellite, which will be operated and controlled from ground stations based in Saudi Arabia, will serve and support the infrastructure of the telecommunications sector in the Kingdom.

https://www.kacst.edu.sa/eng/about/news/Pages/1071.aspx

Offline xm11

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any know tle track of two satellite ?

Offline input~2

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2019-007A    44034        OBJECT A    631.67min    3.04°    35771km    246km
2019-007B    44035        OBJECT B    632.62min    3.06°    35819km    247km
2019-007C    44036        OBJECT C    633.28min    2.89°    35856km    244km
2019-007D    44037        OBJECT D    631.06min    2.99°    35747km    239km   

Offline jacqmans

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https://twitter.com/isro/status/1093412460936065024

First orbit raising manoeuver of #GSAT31 successfully carried out today at 4:38 am (IST) by firing the on-board engine for a duration of 4684 seconds.

Offline Jester

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without you know what...
« Last Edit: 02/07/2019 08:44 am by Jester »

Offline worldtimedate

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The first orbit raising manoeuver of GSAT-31 satellite has been successfully carried out today (February 7, 2019) at 0438 hrs (IST) by firing the Liquid Apogee Motor (LAM) engine of the satellite for a duration of 4684 seconds.

The Orbital parameters after this Apogee Motor firing are:
 - Apogee (Farthest point from Earth) x Perigee (Nearest point from earth): 35,792 km x 15,485 km
 - Inclination: 0.8 deg

Source : https://www.isro.gov.in/update/07-feb-2019/first-orbit-raising-manoeuver-of-gsat-31-satellite-has-been-successfully-carried

Offline starbase

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Interesting detail: VA247 was likely the tallest Ariane 5 flown to date. The payload fairing was lengthened by a 0,5m extension ring.

Source: https://twitter.com/DutchSpace/status/1093489565132824577

Offline Lewis007

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VA247 launch video with nice close-up shots


Offline worldtimedate

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Though ISRO hasn't yet updated information after the second orbit-raising of GSAT-31, according to n2yo.com, after the possible second orbit-raising maneuver, GSAT-31 has attained near circular GEO orbit and is gradually reaching its final destination with the nearest orbital period of 1,429.8 minutes.

GSAT-31 Satellite details 2019-007B NORAD 44035:
https://www.n2yo.com/satellite/?s=44035

NORAD ID: 44035
Int'l Code: 2019-007B
Perigee: 35,554.9 km
Apogee: 35,786.1 km
Inclination: 0.2 °
Period: 1,429.8 minutes
Semi major axis: 42041 km
RCS: Unknown
Launch date: February 5, 2019
Source: India (IND)
Launch site: FRENCH GUIANA (FRGUI)

LIVE REAL TIME SATELLITE TRACKING AND PREDICTIONS: GSAT-31:
https://www.n2yo.com/?s=44035&live=1

Offline worldtimedate

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After the injection of GSAT-31 communication satellite into an elliptical Geosynchronous Transfer Orbit (GTO) on February 06, 2019, all the three orbit raising manoeuvers have been completed successfully as planned using the satellite's propulsion system.

The satellite antennas have been deployed and the satellite is placed in an orbit with a perigee (nearest point from Earth) of 35,548 km and an apogee (farthest point from Earth) of 35,778 km with an inclination of 0.13 deg which is very close to its operational orbit.

Source : https://www.isro.gov.in/update/09-feb-2019/after-injection-of-gsat-31-communication-satellite-elliptical-geosynchronous

Offline worldtimedate

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GSAT-31 Satellite's Final Destination :

Offline eeergo

Slow-motion video from different camera angles of this launch:

-DaviD-

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