The second Ariane 5 flight of 2011 enters its final countdown

The final countdown for today’s Ariane 5 flight with the Yahsat Y1A and Intelsat New Dawn telecommunications satellites is underway at Europe’s Spaceport. Liftoff of the heavy-lift vehicle is scheduled at the start of a launch window that opens at 6:45 p.m., local time in French Guiana.

Ariane 5’s payload lift performance for this mission is nearly 10,065 kg., which includes a mass of 8,965 kg. for its two satellite passengers, along with the associated integration hardware and the launcher’s SYLDA multi-payload dispenser system.

Launch countdown interrupted for Ariane 5’s launch with Yahsat Y1A and Intelsat New Dawn

Data analysis is underway to determine the cause of an anomaly that interrupted the Ariane 5’s launch prior to liftoff with its Yahsat Y1A and Intelsat New Dawn satellites. The Ariane 5 and its two payloads switched to a safe mode on the launch pad.

While analyses are being performed to determine the anomaly – which was detected after startup of the cryogenic main engine, but before ignition of the two solid boosters – the Ariane 5 will be rolled back to the Spaceport’s Final Assembly Building, where it is to be returned to a flight-ready condition.

Ariane 5 is authorized for its dual-payload flight on March 30

The green light has been given for Wednesday’s Ariane 5 mission with the Yahsat Y1A and Intelsat New Dawn spacecraft. Its go-ahead followed today’s successful launch readiness review, which validated the status of Ariane 5 and its dual satellite payload, the launch infrastructure at Europe’s Spaceport, and the network of downrange tracking stations.

This authorization clears the way for Ariane 5’s rollout from its Final Assembly Building to the ELA-3 launch zone, which will take place tomorrow. Liftoff of the Ariane 5 is planned during a launch window that opens on March 30 at 6:45 p.m. local time in French Guiana.

ARIANE 5 RECEIVES THE SECOND OF ITS TWO SATELLITE PASSENGERS

The Ariane 5 for launch on March 30 is now complete following the integration of its Yahsat Y1A and Intelsat New Dawn satellite payloads.

This mission will be Arianespace’s second Ariane 5 flight of 2011.

Intelsat New Dawn is to provide supply critical communications infrastructure for African customers, while Yahsat Y1A will deliver customized relay services for the government and commercial sectors in the Middle East, Africa, Europe and Southwest Asia.

INTELSAT NEW DAWN IS INTEGRATED ON ARIANE 5 FOR NEXT WEEK’S LAUNCH

The Intelsat New Dawn relay platform – which is the first-ever African private sector communications satellite – has been positioned atop Ariane 5’s core cryogenic stage, placing it as the lower passenger for Arianespace’s mission on March 30.
Intelsat New Dawn was developed to provide supply critical communications infrastructure for African customers, and will be launched along with Yahsat Y1A on another of Ariane 5’s dual-payload flights.

AFRICA’S FIRST PRIVATE SECTOR TELECOM SATELLITE IS READIED FOR LAUNCH

Pre-launch checkout is continuing at the Spaceport in French Guiana for Intelsat New Dawn, which is one of two spacecraft passengers to be orbited on Arianespace’s next Ariane 5 mission, scheduled for March 29. Produced by Orbital Sciences Corporation in Dulles, Virginia, Intelsat New Dawn is equipped with 28 C-band and 24 Ku-band 36 MHz transponders designed specifically to supply critical communications infrastructure for African customers. After its deployment by Ariane 5, the satellite will be positioned at a geostationary orbital slot at 32.8° East for its Africa area coverage.

ARGENTINA’S ARSAT-2 SPACECRAFT TO BE ORBITED BY ARIANESPACE

ARSAT has selected Arianespace to launch its second satellite, Arsat-2. With a liftoff mass of about 2,900 kg., this spacecraft will be placed into geostationary transfer orbit by an Ariane 5 or Soyuz launcher operated from the Spaceport in French Guiana. To be fitted with 26 Ku-band (2 beams) and 10 C-band (hemi beam) equivalent transponders, Arsat-2 will offer a wide range of telecommunications, data transmission, Internet and television services – primarily across the Americas from Argentina to Canada.