Subscribe free to our newsletters via your
. Space Travel News .




LAUNCH PAD
Ariane 5 performs 50th successful launch in a row
by Staff Writers
Kourou, French Guiana (ESA) Aug 06, 2012


An Ariane 5 launches dual payloads.

Tonight marked the 50th successful Ariane flight in a row: an Ariane 5 was launched from Europe's Spaceport in French Guiana to perform a dual deployment of two telecommunications satellites, Intelsat 20 and Hylas-2, into their planned transfer orbits.

Lift off of flight VA208 took place on Thursday 2 August at 22:54 CEST; 17:54 French Guiana time. This was Ariane 5's fourth launch of 2012, continuing a line of launch successes unbroken since 2003.

Including its double payload, the 50.5-m-tall Ariane 5 ECA had a total lift-off mass of 780 tonnes. Its target injection orbit had a perigee (low point) of 249.5 km and apogee (high point) of 35 934 km with an inclination of 6 degrees relative to the equator.

Once placed in this transfer orbit, the satellites' own thrusters then gradually circularise their orbits to attain geostationary orbit - where they keep pace with Earth's own rotation, causing them to remain at fixed points in the sky.

Weighing approximately 6090 kg at launch, Intelsat 20 was built for international satellite operator Intelsat by US-based Space Systems/Loral.

Positioned in geostationary orbit at 68.5 degrees East - above the Indian Ocean - the satellite is replacing the Intelsat 7 and 10 satellites to provide video, telephone and data transmission services for Europe, Africa, Russia and the Middle East.

With a launch mass of 3325 kg, Hylas-2 was constructed for UK company Avanti Communications by US-based Orbital Sciences Corporation.

Positioned in geostationary orbit at 33.5 degrees West - above the Atlantic - the satellite employs high-bandwidth Ka-band to provide broadband internet and two-way data services across Europe, Africa and the Middle East.

The combined mass of the two satellites and auxiliary support structures added up to 10 183 kg, which is a performance record for Ariane 5.

VA208 flight timeline
Ariane 5's cryogenic, liquid-propellant main engine was ignited first. Seven seconds later, the solid-propellant boosters also fired, and the vehicle lifted off a fraction of a second later.

The solid boosters were jettisoned 2 min 21 sec after main engine ignition, and the fairing protecting the payload during the climb through Earth's atmosphere was discarded at 3 min 16 sec.

The launcher's main engine shut down at 8 min 57 sec; six seconds later, the main cryogenic stage separated from the upper stage and its payload.

Four seconds after main stage separation, the engine of the cryogenic upper stage ignited to continue the journey. Orbital injection took place at 25 min 25 sec, at which point the vehicle was travelling at 9352 m/s (33 667.2 km/h) at an altitude of about 658 km. The conditions for geostationary transfer orbit injection had been achieved.

At 28 min 01 sec after main engine ignition, Intelsat 20 separated from the upper stage, followed by Hylas-2 at 34 min 17 sec.

.


Related Links
Arianesoace
Launch Pad at Space-Travel.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





LAUNCH PAD
Avanti announces successful launch of its HYLAS 2 Satellite
Kourou, French Guiana (ESA) Aug 03, 2012
Avanti Communications Group plc, the satellite operator, announces the successful launch of HYLAS 2 from the European Spaceport in Kourou, French Guiana on Ariane Flight VA208 at 5.54pm local time (9.54pm UK time). The Ariane 5 launch was perfect, injecting HYLAS 2 into the correct orbit precisely on schedule. HYLAS 2 separated from the Ariane 5 on time and telemetry was received at the control ... read more


LAUNCH PAD
Ariane 5 performs 50th successful launch in a row

Boeing Delivers 2nd Intelsat 702MP Satellite to Sea Launch Home Port

The Indian GSAT-10 satellite is prepared for Arianespace's fifth Ariane 5 flight of 2012

Arianespace: 50 successful Ariane 5 launches in a row!

LAUNCH PAD
Mars Science Lab Curiosity Lands On Mars: First Photos

Mars Express marks the spot for Curiosity landing

Opportunity Prepares for Curiosity's Arrival

What to Expect When Curiosity Starts Snapping Pictures

LAUNCH PAD
US flags still on the moon, except one: NASA

Another Small Step for Mankind

Russia starts building Moon spaceship, eyes Lunar base

Plans to revisit Moon impeded by financial difficulties

LAUNCH PAD
Fly New Horizons through the Kuiper Belt

Hubble Discovers a Fifth Moon Orbiting Pluto

Hubble telescope spots fifth moon near Pluto

New Horizons Doing Science in Its Sleep

LAUNCH PAD
RIT Leads Development of Next-generation Infrared Detectors

UCF Discovers Exoplanet Neighbor

Can Astronomers Detect Exoplanet Oceans

The Mysterious Case of the Disappearing Dust

LAUNCH PAD
NASA cash boosts efforts for shuttle successor

NASA's Space Launch System Passes Major Agency Review, Moves to Preliminary Design

A Summer of Records for Engine Testing

NASA Tests Hypersonic Inflatable Heat Shield

LAUNCH PAD
China's Long March-5 carrier rocket engine undergoes testing

China to land first moon probe next year

China launches Third satellite in its global data relay network

Looking Forward to Shenzhou 10

LAUNCH PAD
Dawn Completes Intensive Phase Of Vesta Exploration

Planetary Resources Announces Agreement with Virgin Galactic for Payload Services

Explained: Near-miss asteroids

The B612 Foundation Announces The First Privately Funded Deep Space Mission




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement