Anduril's Mississippi Rocket Motor Test Site Damaged in Explosion
Original: An Explosion Knocked Out Anduril’s Rocket Motor Test Site in Mississippi
Why This Matters
Pentagon strategy to diversify solid rocket motor suppliers faces setback; production delays affect U.S. defense missile capability.
A rocket motor exploded during testing at Anduril's Mississippi facility on Friday, damaging the testing stand and halting prototype work. No injuries reported. Rebuilding could take weeks to months, marking another setback for the defense startup's missile propulsion business.
Anduril Industries confirmed a rocket motor explosion at its McHenry, Mississippi testing facility last Friday. Chief Operating Officer Matt Grimm announced the incident on social media Tuesday after WIRED inquiry, stating no injuries occurred and that the damaged testing stand would be rebuilt for resumption of testing within weeks. Three people familiar with Anduril's operations told WIRED they could not recall a similar test explosion in recent years and were unaware of the cause. The incident halted prototype testing work that generates revenue for Anduril's rocket motor unit, with one source estimating rebuilding could take up to two months. However, Anduril's statement that production remains on schedule contradicts accounts from four people familiar with the program, who note the company missed its July 1, 2025 mass production deadline by one year. The McHenry facility has faced repeated challenges, including safety issues reported in March such as employee injury from igniter contact and underperforming equipment purchases. Anduril, valued at $61 billion, has successfully delivered billions in government contracts for drones and surveillance systems but struggles with the complex rocket motor production. U.S. solid rocket motor production is dominated by only a few companies, prompting Pentagon support for startups like Anduril to overcome supply shortages.