Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time.
NASA fired an RS-25 engine for 550 seconds on Oct. 17, 2023 to prepare for future Artemis moon missions with astronauts. The hotfire took place at NASA Stennis Space Fire Center in Mississippi.. Then the new hotfire series, starting Wednesday , aims to continue certifying an updated RS-25 line of engines that will start flying on the Artemis 5 mission late in the 2020s.
Each hotfire series puts a different RS-25 engine through its paces; another RS-25 was certified in June following its own set of 12 tests. in Mississippi showed smoke and fire successfully flowing out of the RS-25 for 550 seconds , which was the full planned duration of Wednesday's test. The test included bringing the power up to the level required during a normal SLS launch. The duration was slightly longer than a nominal SLS core-stage burn, which lasts 500 seconds.
The engines aren't the only thing being tested for future missions. For example, in September, engineers at NASA’s Marshall Space Flight Center in Huntsville, Alabama finished a subscale booster motor test. SLS uses twin solid-rocket boosters to provide additional thrust during liftoff. The test is examining an alternate booster design for missions after Artemis 8.
Elizabeth Howell , Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer forfor 10 years before joining full-time.
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