Launch News ARIANE FLIGHT VA236 with SGDC and KOREASAT-7 UTC May 4, 20:31-23:19

Nicholas Kang

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LAUNCH KIT: http://www.arianespace.com/wp-content/uploads/2017/03/VA236-launchkit-EN2.pdf

PRESS RELEASE: http://www.arianespace.com/press-re...elecom-satellites-for-brazil-and-south-korea/

NEW Press Release:http://www.arianespace.com/press-re...arations-announces-new-launch-date-for-va236/

OVERVIEW

PAYLOAD(S)|SGDC, KOREASAT-7
LAUNCH VEHICLE|Ariane 5 ECA
STATUS|Upcoming
CUSTOMER(S)|VISIONA Tecnologia Espacial S.A., KT SAT
PRIME CONTRACTOR(S)|VISIONA Tecnologia Espacial, Thales Alenia Space
LAUNCH SITE|Spaceport, French Guiana (Guiana Space Center)
ORBIT|Geostationary transfer orbit (GTO)

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MISSION DESCRIPTION

For its fourth launch of the year, and the second Ariane 5 mission in 2017 from the Guiana Space Center in French Guiana, Arianespace will orbit two satellites: SGDC for VISIONA Tecnologia Espacial S.A. on behalf of the Brazilian operator Telebras S.A., and KOREASAT-7 for ktsat of South Korea.

SGDC and KOREASAT-7 are the 555th and 556th satellites to be launched by Arianespace.

This will be the 287th mission by the Arianespace family of launchers, and the seventh all-Thales Alenia Space mission, as both satellites were built by this manufacturer.

LAUNCH TIME:

KOUROU|BETWEEN 5:31 P.M. AND 8:20 P.M.
WASHINGTON D.C.|BETWEEN 4:31 P.M. AND 7:19 P.M.
UNIVERSAL TIME (UTC)|BETWEEN 20:31 AND 23:19
PARIS|BETWEEN 10:31 P.M. AND 01:19 P.M. (MAY4/5)

PAYLOADS:

SGDC

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SGDC (Geostationary Satellite for Communications and Defense) is the first satellite for the operator Telebras S.A. to be launched by Arianespace, performed within the scope of a contract with SGDC prime contractor VISIONA Tecnologia Espacial S.A.

This Brazilian government program has three main objectives:

1. Reduce Brazil’s digital divide by providing high-quality Internet services to 100% of the country territory as part of the National Broadband Plan

2. Provide sovereign and secure means for the Brazilian Government and Defense strategic communications

3. Acquire critical technologies for the Brazilian space industry, enabling the industry to take increasingly important roles in the future Brazilian space programs.

Positioned at 75° West, with its 57 Ka-band beams and 5 X-band channels, the SGDC is a multi-spot beam HTS satellite able to delivering more than 57 Gbps over the Brazilian territory.

The SGDC will be operated and controlled by Telebras S.A., a Brazilian telecommunication company controlled by the Ministry of Science, Technology, Innovation and Communication; and the Defense Ministry.

As SGDC prime contractor, VISIONA Tecnologia Espacial S.A. is responsible for program management, overall system integration and end-to-end communication. SGDC was manufactured by Thales Alenia Space in Cannes, France using the reliable Spacebus 4000C4 platform.

KOREASAT-7

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KOREASAT-7 is the third KOREASAT satellite to be launched by Arianespace for ktsat, following KOREASAT-3 and KOREASAT-6, launched in September 1999 and December 2010, respectively.

ktsat, a wholly-owned subsidiary of KT Corp. – the largest telecom/media service provider in South Korea – is the country’s sole satellite service provider. Since the establishment of the Kumsan Satellite Center (Teleport) in 1970, ktsat has been the national leader in telecommunications and broadcasting services. It currently operates three satellites.

KOREASAT-7 will provide a full range of video and data applications, including Internet access, direct-to-home broadcasting (DTH), government communications and connectivity for VSAT (Very Small Aperture Terminal) networks.

Positioned at 116° East, KOREASAT-7 is designed to provide higher throughput and extended coverage over Korea, the Philippines, the Indochinese Peninsula, India and Indonesia. Its added Ka-band capacity, with steerable beams, will enable it to meet increased demand.

KOREASAT-7 was built by Thales Alenia Space in Toulouse and Cannes, France, using a Spacebus 4000B2 platform.

COUNTDOWN AND FLIGHT EVENTS

TIME|EVENTS
T- 11H 23MN|Start of final countdown
T- 10H 33MN|Check of electrical systems
T- 04H 23MN|Check of electrical systems
T- 03H 18MN|Chilldown of Vulcain main stage engine
T- 03H 43MN|Start of filling of ESC-A with liquid oxygen and liquid hydrogen
T- 01H 15MN|Check of connections between launcher and the telemetry, tracking and command systems
T- 00H 7MN|“All systems go” report, allowing start of synchronized sequence
T- 00H 4MN|Tanks pressurized for flight
T- 00H 1MN|Switch to onboard power mode
T- 00H 5S|Opening command for the cryogenic arms
T- 00H 4S|Onboard systems take over
LIFTOFF|00:00
T+ 00H 13S|End of vertical climb, beginning of pitch motion
T+ 00H 17S|Beginning of roll maneuver
T+ 00H 2MN 21S|EAP separation
T+ 00H 3MN 22S|Fairing jettisoned
T+ 00H 7MN 51S|Acquisition by Natal tracking station
T+ 00H 8MN 53S|End of EPC thrust phase
T+ 00H 8MN 59S|EPC separation
T+ 00H 9MN 3S|Ignition of ESC-A stage
T+ 00H 13MN 48S|Acquisition by Ascension tracking station
T+ 00H 18MN 25S|Data acquisition by Libreville tracking station
T+ 00H 23MN 6S|Acquisition by Malindi tracking station
T+ 00H 24MN 57S|Injection
T+ 00H 28MN 11S|SGDC satellite separation
T+ 00H 29MN 52S|SYLDA separation
T+ 00H 36MN 46S|KOREASAT-7 satellite separation
T+ 00H 53MN 30S|End of the Arianespace mission

GALLERY:

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January 31, 2017. Ariane 5’s cryogenic core stage is unloaded from the MN Colibri after docking in French Guiana.

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March 13, 2017. KOREASAT-7 secured atop Ariane 5 core section.

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March 13, 2017. The Ariane 5 payload fairing is lowered into position around SGDC.

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March 13, 2017. Ariane 5 during its transfer to the Spaceport’s Final Integration Building.

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May 3, 2017. Ariane 5 moves into position at the Spaceport’s ELA-3 launch zone.
 
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