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Magna, Utah, January 8, 2024 – Two of Northrop Grumman Corporation’s (NYSE: NOC) extended length, 63-inch-diameter Graphite Epoxy Motors (GEM 63XL) solid rocket boosters helped power the inaugural flight of United Launch Alliance’s (ULA) Vulcan Rocket and the first certification (Cert-1) mission.

The GEM 63XL boosters are the longest monolithic, single-cast solid rocket boosters ever manufactured and flown.
The launch represents the first flight of the GEM 63XL solid rocket boosters.
The boosters delivered more than 900,000 pounds of thrust, nearly two-thirds of the vehicle’s total thrust at lift-off.

The Cert-1 mission carried two payloads, one that will deliver science and technology to the lunar surface, including Astrobotic’s first Peregrine Lunar Lander, Peregrine Mission One, as part of NASA’s Commercial Lunar Payload Services program and the second was Celestis’ Memorial Spaceflights deep-space Voyager mission.

Northrop Grumman began development of the fifth-generation GEM 63XL strap-on boosters in 2015, under a cooperative agreement with ULA to provide additional lift capability for the Vulcan launch vehicle. The motor was qualified for flight in 2020 via static test firing at the company’s Promontory, Utah, test facilities. In June 2022, ULA awarded Northrop Grumman a multi-year contract worth more than $2 billon for increased production of its GEM boosters, which will support Amazon’s Project Kuiper and additional ULA customers.

Northrop Grumman has supplied rocket propulsion to ULA and its heritage companies for various launch vehicles since 1964. The GEM 63XL is an extended length variation of the GEM 63 boosters, which have supported eight Atlas V launches with 27 boosters to date.

The company’s Commerce, Calif., facility also manufactured the Vulcan launch vehicle’s hydrazine diaphragm propellant tank, which feeds the Centaur upper stage Reaction Control System to provide guidance and control during the later stages of launch. This tank is a more powerful successor to the ones previously supplied by Northrop Grumman for the Atlas V and Delta IV programs.

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CAPE CANAVERAL, Fla., March 26, 2020 (GLOBE NEWSWIRE) — The successful March 26 launch of the U.S. Space Force’s sixth and final Advanced Extremely High Frequency (AEHF) military communications satellite aboard a United Launch Alliance (ULA) Atlas V rocket marked the 500th flight of Aerojet Rocketdyne’s RL10 upper-stage engine.

The RL10, which powers the ULA Atlas V Centaur upper stage, is one of several Aerojet Rocketdyne propulsion products supporting the mission. Aerojet Rocketdyne propulsion can be found on both the rocket and the AEHF-6 satellite. Built by Lockheed Martin, the AEHF satellites provide secure, jam-proof communications, including nuclear command and control, to U.S. and allied forces.

“This launch marks an important milestone for Aerojet Rocketdyne and for the country,” said Eileen Drake, Aerojet Rocketdyne’s CEO and president. “The RL10 has supported a majority of the nation’s most important national security and scientific missions, including all of the AEHF satellites which provide communication links that are critical to our warfighters.”

The Atlas V in the 551 configuration is the most powerful vehicle in the Atlas V family, featuring five Aerojet Rocketdyne AJ-60A solid rocket strap-on motors, each generating 348,500 pounds of thrust. Designed specifically to provide extra lifting power to the Atlas V, the AJ-60A is the world’s largest monolithic solid rocket motor ever flown.

The AEHF-6 satellite, meanwhile, is outfitted with three different types of Aerojet Rocketdyne thrusters for attitude control, orbital station keeping and maneuvering. These include 12 MR-103G and six MR-106E monopropellant thrusters; and four, 5-kilowatt-class XR-5 Hall-effect electric thrusters and associated power processing systems.

The Atlas V also uses Aerojet Rocketdyne reaction control thrusters on the Centaur upper stage, as well as pressure vessels provided by ARDÉ, an Aerojet Rocketdyne subsidiary. The rocket launched from Cape Canaveral Air Force Station, Florida, and the AEHF-6 satellite is on its way to its operating location in geostationary orbit.

In addition to the Atlas V, the RL10 also powers the upper stage of ULA’s Delta IV Heavy rocket. The RL10 has helped place hundreds of military, civil and commercial satellites into Earth orbit and has sent spacecraft to explore every planet in our solar system. The RL10’s proven reliability over more than five decades of service has made it the upper-stage engine of choice for three new rockets under development, including ULA’s Vulcan Centaur, Northrop Grumman’s OmegA, and NASA’s Space Launch System.

About Aerojet Rocketdyne: Aerojet Rocketdyne, a subsidiary of Aerojet Rocketdyne Holdings, Inc. (AJRD), is a world-recognized aerospace and defense leader that provides propulsion systems and energetics to the space, missile defense and strategic systems, and tactical systems areas, in support of domestic and international customers.

Tag: ULA

Northrop Grumman Solid Rocket Boosters aid first ULA Vulcan Rocket launch

Aerojet Rocketdyne RL10 Engine Marks 500th Flight with AEHF-6 Launch

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