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Fit for service: Themis reusable rocket stage demonstrator
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By NASA
With the historic first international space docking mission only six months away, preparations on the ground for the Apollo-Soyuz Test Project (ASTP) intensified. At NASA’s Kennedy Space Center (KSC) in Florida, workers in the Vehicle Assembly Building (VAB) stacked the rocket for the mission, the final Saturn rocket assembled for flight. In the nearby Manned Spacecraft Operations Building (MSOB), the Apollo prime crew of Commander Thomas Stafford, Command Module Pilot Vance Brand, and Docking Module Pilot Donald “Deke” Slayton, and their backups Alan Bean, Ronald Evans, and Jack Lousma conducted vacuum chamber tests of the Command Module (CM), the final Apollo spacecraft prepared for flight.
Inside the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida, workers attach fins to the Saturn IB’s first stage. In the VAB, workers secure the first stage of the Saturn IB rocket onto the milk stool, perched on Mobile Launcher-1. Workers lift the second stage of the Saturn IB rocket prior to mating with the first stage. Workers lower a boilerplate Apollo spacecraft onto the Saturn IB rocket. The Saturn IB rocket, serial number SA-210, used for ASTP had a lengthy history. Contractors originally built its two stages in 1967, at a time when NASA planned many more Saturn IB flights to test Apollo spacecraft components in Earth orbit in preparation for the Moon landing. By 1968, however, after four uncrewed Saturn IB launches, only one launched a crew, Apollo 7. Four more Saturn IBs remained on reserve to launch crews as part of the Apollo Applications Program, renamed Skylab in 1970. Without an immediate mission, the two stages of SA-210 entered long-term storage in 1967. Workers later modified and refurbished the stages for ASTP before shipping them to KSC. The first stage arrived in April 1974 and the second stage in November 1972.
On Jan. 13, 1975, inside the cavernous VAB, workers stacked the Saturn IB rocket’s first stage onto Mobile Launcher-1 (ML-1), modified from its use to launch Saturn V rockets during the Apollo program with the addition of the milk stool pedestal. The milk stool, a 128-foot tall platform, allowed the Saturn IB to use the same Launch Umbilical Tower as the much larger Saturn V rocket at Launch Complex 39. The next day, workers lowered the second stage onto the first, followed by the Instrument Unit two days later. Finally, on Jan. 17 workers topped off the rocket with a boilerplate Apollo spacecraft while engineers continued testing the flight article in the MSOB.
The ASTP Apollo Command and Service Modules arrive at NASA’s Kennedy Space Center (KSC) in Florida. The ASTP Command Module arrives in KSC’s Manned Spacecraft Operations Building. The Command and Service Modules – CSM-111 – arrived at KSC from the Rockwell International plant in Downey, California, on Sept. 8, 1974, by C-5A Galaxy cargo plane. Rockwell had finished building the spacecraft in March 1970 and placed it in storage until July 1972. Modifications for ASTP took place between August 1972 and August 1974, following which Rockwell shipped the spacecraft to KSC. The sign on the shipping container bore the legend “From A to Soyuz – Apollo/Soyuz – Last and the Best.” Workers at KSC towed the modules to the MSOB for inspection and checkout, joined the two modules, and placed the combined spacecraft into a vacuum chamber.
The prime Apollo crew of Thomas Stafford, left, Vance Brand, and Donald “Deke” Slayton suit up in preparation for an altitude chamber test in the Command Module (CM). The astronauts inside the CM in the altitude chamber. In the MSOB, the prime and backup ASTP crews conducted tests of their spacecraft in an altitude chamber. After both crews completed simulated runs in December 1974, the prime crew of Stafford, Brand, and Slayton suited up, entered the CM inside the chamber, closed the hatch, and conducted an actual test on Jan. 14, with the chamber simulating altitudes of up to 220,000 feet. Two days later, the backup crew of Bean, Evans, and Lousma completed a similar test.
he backup Apollo crew of Alan Bean, left, Ronald Evans, and Jack Lousma suit up in preparation for an altitude chamber test in the Command Module (CM). Workers assist backup crewmember Lousma into the CM. To solve the problem of the Apollo and Soyuz spacecraft operating at different atmospheric pressures and compositions and using incompatible docking mechanisms, engineers designed a Docking Module (DM) that acted as both an airlock and a transfer tunnel and a Docking System (DS) that allowed the two nations’ spacecraft to physically join in space. NASA contracted with Rockwell International to build the DM. Engineers equipped one end of the DM with the standard Apollo probe-and-drogue docking mechanism and the other end with the androgynous system that linked up with its opposite half installed on the modified Soyuz spacecraft. During launch, the DM rested inside the Spacecraft Lunar Module (LM) Adaptor (SLA) atop the rocket’s upper stage, much like the LM during Apollo flights. Once in orbit, the astronauts separated the CSM from the upper stage, turned the spacecraft around, docked with the DM and pulled it free.
Workers lower the DM into Chamber B in the Space Environment Simulation Laboratory at NASA’s Johnson Space Center in Houston. Workers lower the DM into Chamber B in the Space Environment Simulation Laboratory at NASA’s Johnson Space Center in Houston. After extensive vacuum testing in Chamber B of the Space Environment Simulation Laboratory at NASA’s Johnson Space Center in Houston, the flight DM arrived at KSC on Oct. 29, 1974, and workers prepared it for more testing in a vacuum chamber in the MSOB. The flight DS arrived at KSC on Jan. 3, 1975, and two weeks later workers installed it on the DM. On Jan. 27, engineers lowered the DM onto the CM in the altitude chamber to conduct a mechanical docking test. Engineers conducted 10 days of joint tests of television and audio equipment to ensure systems compatibility.
Workers conduct a docking test of the Docking Module with the Command Module at NASA’s Kennedy Space Center in Florida. NASA support astronaut Robert Overmyer, right, works with engineers during compatibility testing. To be continued…
Major events around the world in January 1975:
January 5 – Musical The Wiz opens on Broadway, runs for 1,672 performances.
January 6 – The game show Wheel of Fortune debuts on NBC.
January 8 – Ella Grasso of Connecticut becomes the first elected female governor in the U.S.
January 11 – The S-II second stage of the Saturn V rocket that launched Skylab reenters the Earth’s atmosphere over the Indian Ocean.
January 12 – The Pittsburg Steelers beat the Minnesota Vikings in Super Bowl IX, played in Tulane Stadium in New Orleans.
January 15 – Space Mountain opens at Disney World in Orlando.
January 18 – The Jeffersons premieres on CBS.
January 22 – Launch of the Landsat-2 Earth resources monitoring satellite.
January 30 – Ernő Rubik applies for a patent in Hungary for his Magic Cube, later known as Rubik’s Cube.
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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This September 2024 aerial photograph shows the coastal launch range at NASA’s Wallops Flight Facility on Virginia’s Eastern Shore. Wallops is the agency’s only owned-and-operated launch range.Courtesy Patrick J. Hendrickson; used with permission A suborbital rocket is scheduled to launch from NASA’s Wallops Flight Facility in Virginia during a window extending from Monday, Jan. 13, through Thursday, Jan. 16. This launch supports the Missile Defense Agency, Naval Surface Warfare Center, Port Hueneme Division’s White Sands Detachment, and other Department of Defense organizations.
No real-time launch status updates will be available. The launch will not be livestreamed, and updates will not be provided during the countdown. The rocket launch may be visible from the Chesapeake Bay region.
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Last Updated Jan 10, 2025 EditorAmy BarraLocationWallops Flight Facility Related Terms
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By Space Force
The inclusion of these C2 centers was a deliberate effort to add a layer of realism and enhance the exercise's effectiveness in preparing joint space forces for the challenges of the Great Power Competition.
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By NASA
NASA has taken a big step forward in how engineers will assemble and stack future SLS (Space Launch System) rockets for Artemis Moon missions inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida.
The VAB’s High Bay 2 has been outfitted with new tooling to facilitate the vertical integration of the SLS core stage. That progress was on full display in mid-December when teams suspended the fully assembled core stage 225 feet in the air inside the high bay to complete vertical work before it is stacked on mobile launcher 1, allowing teams to continue solid rocket booster stacking simultaneously inside High Bay 3 for Artemis II.
The fully assembled SLS (Space Launch System) core stage for the Artemis II test flight is suspended 225 feet in the air inside the newly renovated High Bay 2 at Kennedy’s Vehicle Assembly Building. The core stage was lifted to enable engineers to complete work before it is stacked on mobile launcher 1 with other rocket elements. With the move to High Bay 2, technicians now have 360-degree tip to tail access to the core stage, both internally and externally.NASA With the move to High Bay 2, technicians with NASA and Boeing now have 360-degree tip to tail access to the core stage, both internally and externally. Michigan-based supplier Futuramic Tool and Engineering led the design and build of the Core Stage Vertical Integration Center tool that will hold the core stage in a vertical position.
“High Bay 2 tooling was originally scheduled to be complete for Artemis III. We had an opportunity to get it done earlier and that will put us in a good posture to complete work earlier than planned prior to moving the core stage for Artemis II into the full integrated stack over into in High Bay 3,” said Chad Bryant, deputy manager of the NASA SLS Stages Office. “This gives us an opportunity to go in and learn how to rotate, lift, and move the core stage into the high bay.”
This move also doubles the footprint of useable space within the VAB, giving engineers access to both High Bay 2 and High Bay 3 simultaneously, while also freeing up space at NASA’s Michoud Assembly Facility in New Orleans to continue work on the individual elements for future SLS core stages.
High Bay 2 has a long history of supporting NASA exploration programs: during Apollo, High Bay 2, one of four high bays inside the VAB, was used to stack the Saturn V rocket. During the Space Shuttle Program, the high bay was used for external tank checkout and storage and as an extra storage area for the shuttle.
Under the new assembly model beginning with Artemis III, all the major structures for the SLS core stage will continue to be fully produced and manufactured at NASA Michoud. Upon completion of manufacturing and thermal protection system application, the engine section will be shipped to Kennedy for final outfitting.
The 212-foot-tall SLS (Space Launch System) core stage for NASA Artemis II is seen being moved from a horizontal position to a vertical position in High Bay 2 at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. With the move to High Bay 2, NASA and Boeing technicians now have 360-degree access to the core stage both internally and externally. (NASA) “Core stage 3 marks a significant change in the way we build core stages,” said Steve Wofford, manager of the SLS Stages Office. “The vertical capability in High Bay 2 allows us to perform parallel processing from the top to bottom of the stage. It’s a much more efficient way to build core stages. This new capability will streamline final production efforts, allowing our team to have 360-degree access to the stage, both internally and externally.”
The fully assembled core stage for Artemis II arrived July 23, 2024, at Kennedy, where it remained horizontal inside the VAB transfer aisle until its recent lift into the newly outfitted high bay.
Teams at NASA Michoud are outfitting the remaining core stage elements for Artemis III and preparing to horizontally join them. The four RS-25 engines for the Artemis III mission are complete at NASA’s Stennis Space Center in Bay St. Louis, Mississippi, and will be transported to NASA Kennedy in 2025. Major core stage and exploration upper stage structures are in work at NASA Michoud for Artemis IV and beyond.
NASA is working to land the first woman, first person of color, and its first international partner astronaut on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with the Orion spacecraft, supporting ground systems, advanced spacesuits and rovers, the Gateway in orbit around the Moon, and commercial human landing systems. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single launch.
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Jonathan Deal
Marshall Space Flight Center
Huntsville, Ala.
256-544-0034
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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Christopher PestakCredit: NASA Christopher Pestak, program manager of the Glenn Engineering and Research Support (GEARS) contract at NASA’s Glenn Research Center in Cleveland, has received the 2025 Sustained Service Award from the American Institute of Aeronautics and Astronautics (AIAA). This award recognizes AIAA members who have given their time, dedication, and efforts in service to AIAA, the aerospace community, and the engineering profession.
Pestak oversees and coordinates the efforts of 350 contractor employees performing a wide range of scientific, engineering, and technical support work for NASA Glenn on the GEARS contract. He joined NASA in 1983 as an engineering contractor supporting the Atlas/Centaur and Shuttle/Centaur projects.
A Fellow of AIAA, Pestak serves as the deputy director for Educational Programs in AIAA Region III, which encompasses Ohio, Indiana, Michigan, Wisconsin, Kentucky, and Illinois. He will be recognized for his service during an AIAA awards ceremony in January.
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