Getting Closer! See Page 3 Page 2 LAGNIAPPE September 2019
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Volume 15 Issue 8 www.nasa.gov/centers/stennis September 2019 Getting closer! See page 3 Page 2 LAGNIAPPE September 2019 hings are heating up around here – and I am The test crews at Stennis remind me of the story of talking about more than the leather seats of my Ben Hogan, the great golf legend. Hogan was unlike Tgreen ’63 Plymouth convertible after sitting in many other golfing greats – by his own admission, he the sun all afternoon. Ark! did not possess an innate gift for the game. Instead, he practiced and practiced and practiced. Then, he With NASA committed to Green Run testing of the practiced even more. Space Launch System (SLS) core stage, work crews at the B-2 Test Stand have kicked it into high gear. Stories tell of him hitting hundreds of golf balls a day, During the recent lift and installation of the core stage working his way through each club in his bag. Along pathfinder simulator (a size and weight replica of the the way, he studied the golf swing and, in the eyes of actual core stage), teams worked two shifts around the many, perfected it to a level of consistency and purity clock. They will resume that same schedule later this that has never been equaled. year as the SLS flight core stage arrives for testing. When it comes to propulsion testing, the Stennis teams Two lifts of the pathfinder simulator originally were are much the same. They have studied and performed planned in preparation for handling the actual core and honed their skills to an incredible level, just as stage when it arrives later this year. However, only Hogan did with his golf swing. No matter the pressure, one was conducted before the pathfinder was removed hogan knew his swing could perform. In that same from the stand for transport to Kennedy Space Center. manner, Stennis test teams have responded – and met – every challenge set before them. There were several reasons for the decision to forgo an additional lift, including the fact that the Stennis team Green Run core stage testing is their newest challenge, performed the first exercise so well. Of course, when and if the pathfinder exercises are any indication, it you think about it, what else would anyone expect from will be met as well. After all, folks around here know the experienced folk around here. a thing or two about dealing with all kinds of heat. Ark! Lagniappe is published monthly by the Office of Communications at NASA’s John C. Stennis Space Center. Access monthly copies at: www.nasa.gov/centers/stennis/news/publications/index.html Contact info – (phone) 228-688-3749; (email) [email protected]; (mail) NASA OFFICE OF COMMUNICATIONS, Attn: LAGNIAPPE, Mail code IA00, Building 1100 Room 304, Stennis Space Center, MS 39529 Managing Editor – Valerie Buckingham Editor – Lacy Thompson Staff Photographer – Danny Nowlin Page 3 LAGNIAPPE September 2019 NASA’s MOON to MARS MISSION NASA clears milestone in preparation for Green Run testing ASA cleared a milestone area and system of the test stand, as in preparation for Green well as the high-pressure industrial NRun testing of its Space water system and high-pressure gas Launch System (SLS) core stage facility that support test operations. with an Aug. 23/24 lift and instal- lation of the core stage pathfinder NASA is building the SLS flight simulator onto the B-2 Test Stand at core stage at its Michoud Assem- Stennis Space Center. bly Facility in New Orleans and is scheduled for transport to Stennis The lift and installation of the core by the end of the year. The stage stage pathfinder – a size and weight recently completed a critical review replica of the SLS core stage – is in preparation for adding the last helping teams at Stennis prepare for piece of the core stage structure: the Green Run test series. For this the engine section. After this piece test of the new core stage, Sten- is added, the four RS-25 engines can nis will lift the flight core stage for be connected to the stage. Artemis 1, the first SLS mission into the stand. SLS and the new When the stage is completely as- Orion spacecraft being built are the sembled, NASA’s Pegasus barge will foundation for NASA’s Artemis deliver it to Stennis. For the Green Program, which will send the first Run test, the core stage flight unit woman and next man to walk on will be lifted and installed onto the the Moon by 2024. B-2 stand, using procedures de- veloped and practiced during the Stennis modified the B-2 Test Stand recent core stage pathfinder lift. for the core stage Green Run test- ing. The procedure involved lifting NASA then will conduct a series of the core stage pathfinder from its tests to check out stage systems and horizontal position on the B-2 Test make sure all are working as needed. Stand tarmac with the facility boom Once systems are checked, NASA crane line attached to the forward will conduct a full hot fire test of end and a ground crane line at- the stage, firing its four RS-25 en- tached to the aft end. gines simultaneously, just as during an actual launch. The pathfinder then was “broken over” into a vertical position. Once The hot fire test will generate more the ground crane line was discon- than 2 million pounds of combined nected, the core stage pathfinder thrust and provide critical perfor- was lifted into place by the stand mance data needed to demonstrate boom crane. This “fit test” validated the core stage design is flightworthy auxiliary lift equipment, procedures, and ready for launch. and verified that stand modifica- tions and preparations are in place Following necessary refurbishment and prepared for delivery and of the stage, it will be transported testing of the SLS core stage flight by barge to Kennedy Space Center B-2 Test Stand operators perform a lift and installation of the Space Launch System (SLS) core stage pathfinder through the in Florida. At Kennedy, the stage night of Aug.23-24. The procedure marked yet another milestone as Stennis prepares to install and test the actual core stage hardware. that will help power the maiden SLS flight – Artemis I. As photos on this and the following page show, operators used two will be mated with other SLS major cranes to lift the pathfinder from its horizontal position, “break” it over into a vertical position and hoist it up and into place on To prepare for the test, Stennis elements and prepared for launch the stand. The exercise allowed operators to practice the procedure and helped confirm the test facility is ready to receive the modified or upgraded every major of the Artemis 1 mission. core stage when it is delivered later this year. Page 4 LAGNIAPPE September 2019 NASA’s MOON to MARS MISSION Page 5 LAGNIAPPE September 2019 Learning to track water using NASA satellite data Students use real data from NASA’s GRACE satellites to track water mass activities related to tracking water mass changes include estimating water changes in the U.S. With schools resuming across the country the last sev- resources using heat-map data, creating a line graph for a specific location, eral weeks, NASA has STEM activities to keep students motivated. Student assessing trends and discussing implications. NASA in the News NASA looks to understand space weather Goddard visualizer creates CGI Moon kit For the first time, researchers have detected water vapor A new NASA out-of-this-world animation allows human- signatures in the atmosphere of a planet beyond our solar ity to experience their closest galactic neighbor as never system that resides in the “habitable zone,” the region before through an online “CGI (computer-generated around a star in which liquid water could potentially pool imagery) Moon kit.” The new resources uses data from on the surface of a rocky planet.Astronomers at the Cen- NASA’s Lunar Reconnaissance Orbiter (LRO), which has ter for Space Exochemistry Data at the University College been orbiting the Moon for 10 years. One of the primary London used data from NASA’s Hubble Space Telescope goals for the LRO is to accurately map the topography of to find water vapor in the atmosphere of K2-18b, an exo- the Moon to prepare for safer landing to sights of interest planet around a small red dwarf star about 110 light-years for NASA’s Artemis Program. Using data and imagery away. If confirmed, this will be the only exoplanet known from the reconnaissance orbiter, Ernie Wright brings the to have both water in its atmosphere and temperatures Moon to life in unprecedented detail. Wright is a science that could sustain liquid water on a rocky surface. Liquid visualizer who works at the Scientific Visualization Studio water would only be possible if the planet turns out to be at NASA’s Goddard Space Flight Center in Greenbelt, terrestrial in nature, rather than resembling a small version Maryland. He created the online CGI Moon kit in order of Neptune. Given the high activity of its red dwarf star, to make NASA’s data more accessible to 3-D artists. How- K2-18b may be more hostile to life as we know it than ever, as NASA prepares for Artemis flights, including one Earth, as it is likely to be exposed to more high-energy that will carry the first woman and the next man to the radiation. It surface gravity would be significantly higher Moon by 2024, Wright’s animations will assist in planning than on our planet.