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ULA Atlas V launch to feature full complement of Aerojet Rocketdyne solid rocket boosters
by Staff Writers
Sacramento CA (SPX) Apr 17, 2018

illustration only

The upcoming launch of the U.S. Air Force Space Command (AFSPC)-11 satellite aboard a United Launch Alliance Atlas V rocket from Cape Canaveral Air Force Station, Florida, will benefit from just over 1.74 million pounds of added thrust from five AJ-60A solid rocket boosters supplied by Aerojet Rocketdyne. The mission marks the eighth flight of the Atlas V 551 configuration, the most powerful Atlas V variant that has flown to date.

The Atlas V 551 configuration features a 5-meter payload fairing, five AJ-60As and a Centaur upper stage powered by a single Aerojet Rocket RL10C-1 engine. This configuration of the U.S. government workhorse launch vehicle is capable of delivering 8,900 kilograms of payload to geostationary transfer orbit (GTO), and also has been used to send scientific probes to explore Jupiter and Pluto.

The Centaur upper stage also uses smaller Aerojet Rocketdyne thrusters for pitch, yaw and roll control, while both stages of the Atlas V employ pressurization vessels built by Aerojet Rocketdyne's ARDE subsidiary.

"The Atlas V is able to perform a wide variety of missions for both government and commercial customers, and the AJ-60A is a major factor in that versatility," said Aerojet Rocketdyne CEO and President Eileen Drake.

"Aerojet Rocketdyne developed the AJ-60A specifically for the Atlas V, delivering the first booster just 42 months after the contract award, which underscores our team's ability to design and deliver large solid rocket motors in support of our nation's strategic goals and efforts to explore our solar system."

The flight of the 100th AJ-60A, the largest monolithically wound solid rocket booster ever flown, took place recently as part of a complement of four that helped an Atlas V 541 place the nation's newest weather satellite into GTO.

Anywhere from one to five AJ-60As, each generating 348,500 pounds of thrust, can be used to augment the lift capability of the Atlas V, which has flown 76 missions to date in all of its configurations.

AFSPC-11 is a multi-manifested mission. The forward spacecraft is referred to as CBAS (Continuous Broadcast Augmenting SATCOM) and the aft spacecraft is EAGLE (ESPA Augmented GEO Laboratory Experiment).


Related Links
Aerojet Rocketdyne
Rocket Science News at Space-Travel.Com


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ROCKET SCIENCE
Alaska Aerospace Clarifies Commercial Aerospace Plans For Kodiak
Anchorage, AK (SPX) Apr 16, 2018
Alaska Aerospace has clarified details pertaining to commercial launch activities and development plans at the Pacific Spaceport Complex - Alaska (PSCA), located on Kodiak Island, following misinformation across social media channels. Alaska Aerospace is responsible for any and all infrastructure development at PSCA, limiting air travel near PSCA, impact to public lands near PSCA and notifying the community of these plans. While Vector Launch Inc. will be conducting an orbital launch at PSCA ... read more

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