Aerojet Completes Successful Space Launch System Rocket Engine Test Series

The RS-25 engine fires up for a 500-second test Jan. 9 at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. (Credit: NASA)

STENNIS SPACE CENTER, Miss., Sept. 30, 2021 (Aerojet Rocketdyne PR) – Today’s RS-25 engine test at NASA’s Stennis Space Center completed the Retrofit-2 test series, which validated modernized, lower-cost components for new RS-25 engines to be used on the Space Launch System (SLS) heavy-lift rocket.

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Virgin Orbit Conducts Propulsion Tests at NASA’s Stennis Space Center

Virgin Orbit, a satellite-launch company, conducts a Thrust Chamber Assembly test on the E-1 Test Stand at Stennis Space Center. The company partnered with Stennis to conduct a recently completed series of hot fire tests totaling a cumulative 974.391 seconds. (Credits: NASA/SSC)

BAY ST. LOUIS, Miss. (NASA PR) — When Virgin Orbit, a satellite-launch company based in California, sought to expand its horizons, it was only natural for the company to think about NASA’s largest rocket engine test site – Stennis Space Center near Bay St. Louis, Mississippi.

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Artemis I Core Stage Transported to Its New Home

Artemis I core stage in the Vehicle Assembly Building at NASA’s Kennedy Space Center. (Credit: NASA/Kim Shiflett)

NASA’s Space Launch System (SLS) core stage for the Artemis I mission arrived on April 27, 2021, at the agency’s Kennedy Space Center in Florida. The core stage arrived aboard the Pegasus barge from NASA’s Stennis Space Center in Mississippi to Kennedy’s Launch Complex 39 turn basin wharf.

The core stage is shown being transported into the iconic Vehicle Assembly Building on a self-propelled module transporter on April 29, 2021. Teams from the center’s Exploration Ground Systems and contractor Jacobs will perform checkouts ahead of integrating the massive rocket stage with the twin solid rocket boostersOrion spacecraft, and additional flight hardware ahead of the Artemis I launch.

Artemis I will be the first integrated test of SLS and Orion and will pave the way for landing the first woman and first person of color on the lunar surface. It will be a proving ground for deep space exploration, leading the agency’s efforts under the Artemis program for a sustainable presence on the Moon and preparing for human missions to Mars.

NASA’s Space Launch System Core Stage Heads to Kennedy Space Center

Artemis I core stage leaves Stennis Space Center on the Pegasus barge. (Credit: NASA)

BAY ST. LOUIS, Miss. (NASA PR) — The first core stage of NASA’s Space Launch System (SLS) rocket departs Stennis Space Center near Bay St. Louis, Mississippi, following completion of the Green Run series of tests of its design and systems. The stage now is in route to the agency’s Kennedy Space Center in Florida, its final stop prior to NASA’s launch of the Artemis I mission around the Moon. At Kennedy, the core stage will be integrated with the rest of the SLS rocket and the Orion spacecraft in preparation for launch. Through the Artemis program, NASA will return humans, including the first woman and first person of color, to the Moon and prepare for eventual journeys to Mars.

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Boeing’s 1st Core Stage for NASA’s Space Launch System is Ready for Journey to Launch Site

SLS Core stage for Artemis I mission removed from the test stand at Stennis. (Credit: NASA)
  • Stennis refurbishment complete following flawless test fire
  • NASA to accept delivery of rocket stage to prepare for transport to Kennedy Space Center for integration and launch

STENNIS SPACE CENTER, Mississippi, April 21, 2021 (Boeing PR) — Boeing [NYSE: BA]  begins delivery of the Space Launch System (SLS) rocket cryogenic core stage to NASA today in preparation for launch of the Artemis I mission, the first moon mission in nearly 50 years.

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Final RS-68A Engine for Delta IV Heavy Completes Hot-fire Acceptance Test

Aerojet Rocketdyne’s RS-68A rocket engine successfully completed its final acceptance test April 12, 2021, on the B-1 test stand at NASA’s Stennis Space Center in Mississippi. The RS-68A powers the United Launch Alliance Delta IV Heavy rocket to send critical spacecraft into orbit. (Credit: NASA Stennis)

STENNIS SPACE CENTER, Miss. (Aerojet Rocketdyne PR) — Today (April 12), the world’s most powerful hydrogen-fueled rocket engine built by Aerojet Rocketdyne, the RS-68A, completed its final hot-fire acceptance test for use on the United Launch Alliance (ULA) Delta IV Heavy launch vehicle on the B-1 Test Stand at NASA’s Stennis Space Center in Mississippi.

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NASA Conducts 2nd RS-25 Test in Latest Series for Artemis Moon Missions

RS-25 engine test. (Credit; NASA)

BAY ST. LOUIS, Miss. (NASA PR) — NASA conducted a second RS-25 single engine hot fire test April 6 as part of a new series to support the development and production of engines for the agency’s Space Launch System (SLS) rocket on future missions to the Moon.

The full-duration hot fire of more than eight minutes (500 seconds) was conducted on the A-1 Test Stand at NASA’s Stennis Space Center near Bay St. Louis. It is part of a scheduled seven-test series designed to provide valuable data for Aerojet Rocketdyne, lead contractor for the SLS engines, as it begins production of new RS-25 engines for use after the first four SLS flights.

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Boeing Statement on SLS Core Hot Fire

Acting NASA Administrator Steve Jurczyk, left, and Rick Gilbrech, director of NASA’s Stennis Space Center, right, watch as the core stage for the first flight of NASA’s Space Launch System rocket undergoes a second hot fire test in the B-2 Test Stand, Thursday, March 18, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The four RS-25 engines fired for the full-duration of 8 minutes during the test and generated 1.6 million pounds of thrust. The hot fire test is the final stage of the Green Run test series, a comprehensive assessment of the Space Launch System’s core stage prior to launching the Artemis I mission to the Moon. (Credit: NASA/Robert Markowitz)

STENNIS SPACE CENTER, Mississippi, March 18, 2021 (Boeing PR) — Deep space exploration took an important step forward today. The cryogenic core stage for NASA’s Space Launch System (SLS) rocket completed hot fire testing at NASA’s Stennis Space Center as part of the SLS rocket’s Green Run test campaign on the B-2 test stand. The test, which included a full-duration, eight-minute engine burn, demonstrated successful core stage operation and will be used to help certify the stage for flight.

“I want to thank the extraordinary individuals who make up the NASA, Aerojet Rocketdyne and Boeing teams who designed, developed, produced and tested the all-new SLS core stage to enable sustainable human exploration of deep space,” said John Shannon, Boeing SLS vice president and program manager.

NASA Mega Moon Rocket Passes Key Test, Readies for Launch

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a second hot fire test, Thursday, March 18, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The four RS-25 engines fired for the full-duration of 8 minutes during the test and generated 1.6 million pounds of thrust. The hot fire test is the final stage of the Green Run test series, a comprehensive assessment of the Space Launch System’s core stage prior to launching the Artemis I mission to the Moon. (Credits: NASA/Robert Markowitz)

BAY ST. LOUIS, Miss. (NASA PR) — The largest rocket element NASA has ever built, the core stage of NASA’s Space Launch System (SLS) rocket, fired its four RS-25 engines for 8 minutes and 19 seconds Thursday at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The successful test, known as a hot fire, is a critical milestone ahead of the agency’s Artemis I mission, which will send an uncrewed Orion spacecraft on a test flight around the Moon and back to Earth, paving the way for future Artemis missions with astronauts.

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NASA Completes Full Duration Hot Fire of Space Launch System Core

BAY ST. LOUIS, Miss. (NASA PR) — Teams from NASA’s Space Launch System (SLS) Program conducted a successful full-duration 8 minute (499.6 seconds) hot fire of the Artemis I core stage on Thursday, Mar. 18 at NASA’s Stennis Space Center near Bay St. Louis, Mississippi on the historic B-2 Test Stand.

The hot fire got underway at around 4:40 p.m. EDT with all four RS-25 engines ignited successfully and produced 1.6 million pounds of thrust, as they will to launch the Artemis I mission to the Moon. During the test the engines consumed more than 700,000 gallons of liquid oxygen and liquid hydrogen propellant. The test was conducted with the core stage that will launch that first Artemis mission. Engineers collect data on how the stage behaved during critical operations, such as throttling the engines up and down and moving the engines dynamically in a variety of patterns. In coming days, engineers will scrutinize the data and determine if the stage is ready to be delivered to NASA’s Kennedy Space Center in Florida where it will be integrated with the twin solid rocket boosters already stacked in the Vehicle Assembly Building.

To learn more, tune in to NASA TV for a post-test briefing at about 7 p.m. EDT.

Learn more about Green Run, and check back at this blog for updates on the SLS core stage hot fire test. Watch a replay of the test on NASA Television or NASA’s YouTube channel. For all the photos and videos related to the test, visit, the Green Run Album on NASA Images.org.

NASA Green Run Hot Fire Set for Later Today

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a scheduled eight minute duration hot fire test, Saturday, Jan. 16, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The four RS-25 engines fired for a little more than one minute. The hot fire test is the final stage of the Green Run test series, a comprehensive assessment of the Space Launch System’s core stage prior to launching the Artemis I mission to the Moon. (Credit: NASA/Robert Markowitz)

BAY ST. LOUIS, Miss. (NASA PR) — NASA is targeting a two-hour test window that opens at 3 p.m. EDT Thursday, March 18, for the second hot fire test of the core stage for the agency’s Space Launch System (SLS) rocket at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.

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Reports Say Biden Will Nominate Former Florida Senator Bill Nelson to Lead NASA

Florida Senator Bill Nelson

There are reports this morning that former Florida Senator Bill Nelson to be the next administrator of NASA. I don’t see anything official on the White House website, but it seems likely.

The same reports say that former NASA astronaut Pam Melroy will be nominated to serve as deputy administrator. The retired U.S. Air Force colonel served as pilot for two space shuttle missions before commanding the STS-120 mission in 2007. She was a member of the Biden Admimistration’s agency review team for NASA during the transition.

Nelson, 79, served three terms in the U.S. Senate from 2001-2019, where he was a strong backer of NASA and the U.S. space program. He served in the U.S. House of Representatives from 1979-2001. Nelson is considered to be a moderate Democrat.

Rumors of Nelson’s nomination to NASA’s top job have caused considerable consternation among NewSpace supporters. They blame him for helping saddle NASA with the perpetually over budget and behind schedule Space Launch System (SLS) that has been the biggest barrier to sending astronauts back to the moon.

The core stage of SLS is due for a hot fire at the NASA Stennis Space Center in Mississippi. An announcement of Nelson’s appointment today would be interesting if it actually happens.

One action that some hold against Nelson is his flight aboard the space shuttle Columbia while serving in the House. Nelson flew as a payload specialist on the STS-61-C in January 1986. This was the flight immediately prior to the loss of the space shuttle Challenger later that month.

Nelson is one of only two sitting members of Congress to fly into space. Utah Sen. Jake Garn, a Republican, flew as a payload specialist aboard the space shuttle Discovery in April 1985.

NASA TV to Air Second Rocket Test for Artemis Moon Missions

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a scheduled eight minute duration hot fire test, Saturday, Jan. 16, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The four RS-25 engines fired for a little more than one minute. The hot fire test is the final stage of the Green Run test series, a comprehensive assessment of the Space Launch System’s core stage prior to launching the Artemis I mission to the Moon. (Credit: NASA/Robert Markowitz)

BAY ST. LOUIS, Miss. (NASA PR) — NASA is targeting a two-hour test window that opens at 3 p.m. EDT Thursday, March 18, for the second hot fire test of the core stage for the agency’s Space Launch System (SLS) rocket at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.

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Green Run Update: NASA Targets March 18 for SLS Hot Fire Test

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a scheduled eight minute duration hot fire test, Saturday, Jan. 16, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. (Credit: NASA/Robert Markowitz)

BAY ST. LOUIS, Miss. (NASA PR) — NASA is targeting Thursday, March 18 for the second hot fire of the Space Launch System (SLS) rocket’s core stage at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.

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Green Run Update: NASA Investigating Valve Performance Before Second Hot Fire

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a scheduled eight minute duration hot fire test, Saturday, Jan. 16, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The four RS-25 engines fired for a little more than one minute. The hot fire test is the final stage of the Green Run test series, a comprehensive assessment of the Space Launch System’s core stage prior to launching the Artemis I mission to the Moon. (Credit: NASA/Robert Markowitz)

BAY ST. LOUIS, Miss. (NASA PR) — NASA’s is reviewing the performance of a valve on the core stage of the Space Launch System rocket before proceeding with a second hot fire test at the agency’s Stennis Space Center near Bay St. Louis, Mississippi.

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