AMC-21 Launch Updates

Sebadoh – Tue, 2008 – 08 – 12 09:51

This Thursday, August 14, 2008, an Ariane 5 rocket is scheduled to lift the SES Americom AMC-21 communications satellite into orbit from the European Spaceport in Kourou, French Guiana.

The satellite will operate from the 125 degrees West orbital position after it is launched by Arianespace.

From the press release

Thales Alenia Space served as the prime contractor and communications payload supplier of the Star-2 spacecraft that was designed, built, integrated and tested by Orbital Sciences Corporation (NYSE: ORB). 

AMC-21 was designed and built for advanced telecommunications, mobile applications and TV broadcasting with coverage of the 50 U.S. states, as well as Southern Canada, Mexico, Central America and the Caribbean.  Featuring 24 active 36 MHz transponders, the 2500 kg spacecraft has a 15-year design life.

The launch window for AMC-21 is from 5:44 p.m. to 6:35 p.m., local time in Kourou, French Guiana (4:44 p.m. to 5:35 p.m. in New York; or 8:44 p.m. to 9:35 p.m. GMT; or 10:44 p.m. to 11:35 p.m. in Paris; or 5:44 a.m. to 6:35 a.m. in Tokyo, etc.). You'll also be able to watch the launch on the web here

Going along for the ride with AMC-21 will be the Superbird-7 satellite for Space Communications Corporation of Japan. 

Thursday's launch is just one of many for the satcom industry over the coming months, though the Orbital spacecraft set to launch on August 21st has been delayed, as Measat-3 is being sent back to the United States for repairs, which is a true bummer for the 25 kids who were getting set to watch the launch.

We'll bring you updates on the launches as they happen. 

Score: 8.0, votes: 1

Comments

Oh, Zenit

 

Aviation Week & Space Technology and SpaceFlightNow confimed the rumor: it was an accident involving a crane:

A Malaysian communications satellite being prepared for launch next week could be grounded for at least several months after a crane struck the fuel-laden spacecraft at the Baikonur Cosmodrome in Kazakhstan.

The MEASAT 3a communications satellite was damaged Saturday after the craft was attached to the Block DM-SLB upper stage of the Zenit rocket, according to officials with Sea Launch Co., a parent company of the launch provider.

An overhead crane operated by a processing technician impacted the 5,181-pound satellite, which was already fueled with toxic propellant for its maneuvering thrusters, officials said.

MEASAT 3a will probably be flown back to an Orbital Sciences Corp. factory in Dulles, Va., for repairs and testing, a company spokesperson said.

"The satellite is likely to be coming back to Dulles," said Barry Beneski, an Orbital spokesperson.

The spacecraft is based on Orbital's Star 2 communications satellite platform.

MEASAT 3a is designed to beam Ku-band direct-to-home television programming to customers in Malaysia and Indonesia. C-band transponders will provide fixed satellite services to a wider swath of Asia, Australia, the Middle East and Africa, according to MEASAT Satellite Systems, the craft's owner and operator.

Engineers are assessing damage to the satellite before making a final decision on whether to transport the spacecraft back to the United States.

"We're here to help the customer," Beneski said. "We weren't running the crane and didn't have anything to do with the accident, but we're going to do everything we can to help MEASAT."

MEASAT 3a was on track for launch next week before the crane collision, but the mission will likely be postponed for several months if the spacecraft returns to the United States.

Despite the caustic fuel inside the satellite's propellant tanks, officials said no one was ever in any danger during the accident.

"No hazardous gases were released and no personnel were injured as a result of the incident," said Paula Korn, a Sea Launch spokesperson.

Sea Launch and Space International Services Ltd., a Russian aerospace company, formed Land Launch in 2003 to reach the markets for medium-class communications satellites and large spacecraft bound for low Earth orbit.

Land Launch is managing launch services for MEASAT 3a, the initiative's second mission after it began operations earlier this year.

SIS is in charge of ground processing at Baikonur, and Korn said SIS officials have plenty of experience preparing satellites for launch.

"Clearly, there's a lot of sorting out to do as to what happened and why," Korn said. "All the folks involved were very experienced. Somewhere along the way, human error came into play."

SIS is establishing a commission to investigate the accident, according to Sea Launch.

Korn said company leaders may be able to move forward with another Land Launch mission before the end of the year, pending the results of the investigation into Saturday's accident.

Rocco Fanucci – Wed, 2008 – 08 – 13 10:19

Ariane 5 Launches AMC-21

Another excellent launch by Arianespace:

41ème lancement d’Ariane 5, 27ème succès d’affilée, 9ème lancement en 12 mois. Ce nouveau succès du lanceur Ariane 5, le cinquième en 2008, confirme que l’offre de Service & Solutions d’Arianespace reste pour tous les grands opérateurs et constructeurs du secteur des télécommunications spatiales la référence internationale sur le marché des  services de lancement.

Aujourd’hui, Ariane 5 est le seul lanceur lourd opérationnel et disponible sur le marché commercial, capable de lancer simultanément deux charges utiles.
 
Ce lancement était le 41ème lancement d’Ariane 5, le 27ème succès d’affilée et le 9ème lancement effectué en 12 mois, ce qui démontre amplement la réalité de l’augmentation de la cadence.

Rocco Fanucci – Thu, 2008 – 08 – 14 23:28