US missile hits millionth-inch precision to support submarine-based nuclear deterrent

Scientists in the United States have achieved a key quality control for the Trident II D5 Life Extension missile. At Naval Surface Warfare Center Corona Division (NSWC), scientists can measure parts down to millionths of an inch — the level of exactitude required to keep the Navy’s Trident nuclear missiles ready. Highly precise gages ensure missile components “Every single component from every manufacturer is built correctly thanks to these gages,” said Michael Pierce, NSWC Corona’s Weapons Interface Assessment branch manager. “The work that we do here guarantees that those weapons will work as they’re intended every single time.” Scientists also revealed that special interface gages verify the form, fit and function of missile parts down to tolerances in the millionths of an inch. These highly precise gages ensure missile components are manufactured to the exact shape and size needed, so they fit and work as designed when installed on a submarine. The team highlighted that the NSWC Corona controls and ships gages to the defense industrial base partners responsible for manufacturing and assembling the Trident missile. The mandatory use of these gages ensures that the missiles manufactured by industry meet the Navy’s requirements. “We have engineers that design these highly specialized tools,” Pierce said. “They are certified against the nation’s highest measurement standards to guarantee their precision.” Ballistic missile is launched underwater from submarines Scientists also highlighted that the Trident II D5 Life Extension ballistic missile is launched underwater from submarines, providing a critical deterrent and survivable response to aggression. The Navy’s Portfolio Acquisition Executive Strategic Systems Programs provides the highly accurate and reliable weapon system to the warfighter. “Nearly every weapon system deployed by sailors and Marines relies on Navy special interface gages to ensure peak operational readiness,” Pierce said. The team also stressed that scientists’ microscopic measurements result in a global impact. Whether supporting the Trident missile or other systems throughout the fleet, NSWC Corona’s work equips sailors with the confidence to trust their systems — empowering them to deliver peace through strength when the nation depends on them most.NSWC Corona’s Measurement Science and Technology Laboratory team also underlined that the facility plays a critical role in the Trident II D5LE missile by controlling and certifying the ultra-precision tools required for its assembly, known as special interface gages. The Trident II D5 Life Extension missile is deployed aboard U.S. ballistic-missile submarines and forms a major component of America’s sea-based strategic deterrent. Its submarine-based nature is intended to provide a survivable capability and support the nation’s ability to deter major aggression. Behind this strategic system is an extensive network of engineers, manufacturers, laboratories and military personnel. Among them are scientists at NSWC Corona’s Measurement Science and Technology Laboratory. Their role is highly specialized: ensuring that the tools used to manufacture and assemble missile components are themselves accurate enough to meet extremely demanding standards. Get the latest in engineering, tech, space & science - delivered daily to your inbox.Prabhat, an alumnus of the Indian Institute of Mass Communication, is a tech and defense journalist. While he enjoys writing on modern weapons and emerging tech, he has also reported on global politics and business. He has been previously associated with well-known media houses, including the International Business Times (Singapore Edition) and ANI.