US Navy Designs and 3D Prints Replacement Radar Part in Just Hours


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Back in June, the US Navy announced that additive manufacturing (AM) specialists at the Southeast Regional Maintenance Center (SERMC) in Mayport, Florida had invented a new tool for the MK 15 Phalanx Close-in Weapon System (CIWS). AM Coordinator Chief Machinist’s Mate, Nicholas Heinrich, worked with civilian CIWS Technician, Terry Henderson, to 3D print an aluminum device used for replacing motors on the CIWS.

Now, the SERMC has announced the use of 3D printing for a replacement part — the original was made with injection molding — on the USS Farragut (DDG-99). Maintenance on the Farragut at SERMC was almost done when lieutenant junior grade (LTJG) Anton Tyree, USS Farragut Electronics Material Officer, and other personnel on the ship spotted a malfunctioning part on the ship’s radar system.

Heinrich reverse-engineered the injection molded part “in about 40 minutes”, and within a few hours of that, the new part was printed. Heinrich printed an additional part as well, to equip the Farragut with a spare while it’s at sea. The new part has now been in-service for several weeks without issue.

Image courtesy of the US Navy, via SERMC

Regarding the new 3D printed part for the USS Farragut’s radar system, Heinrich said, “…the 3D printed version was made with more rigidity than the original [injection molded part]. If any ship on the waterfront needs the same part, we can manufacture a new one in about two hours.”

SERMC’s commanding officer, Captain Justin Dowd, said, “This accomplishment is another historical first for our 3D Lab here. Today we demonstrated that if a customer on the waterfront needs something quickly, they can rely on SERMC’s talented workforce and new printers to deliver a high-quality solution to the warfighter in a short period of time.”

Image courtesy of Mass Communication Specialist 3rd Class Austin Collins/US Navy, via The Defense Post

It is important to stand back and recognize the many different elements comprising developments like this one, as well as the earlier development with the CIWS:

  • A US Navy vessel was able to complete its maintenance on time, in a scenario where that may not have otherwise been the case
  • A new part was designed and produced within a matter of hours, providing everyone involved with a successful workforce experience surrounding 3D printing
  • The new part was not only able to be designed and produced right at the point of need, but also may prove to outperform the injection molded part it replaced

All three of these advantages were able to be delivered simultaneously because of AM.

Thus, while there are certainly headwinds being faced by the AM sector at-large, there is also, simultaneously, a huge success story bubbling under the surface, embodying all the features of the long-term vision for AM’s potential. Moreover, the main character of that success story is the quintessential early adopter of new technologies, the US military.

The buildup to this has been years in the making, and it is truly just the beginning, as is detailed in the report that Tali Rosman and I co-wrote, published last month, “Additive Manufacturing for Military and Defense”. No one knows precisely what the AM sector will look like in 2024, but one thing that is certain is that the US military will continue ramping up its AM use-cases, driving the technology towards greater maturity at an even faster rate. When the military discovers something that it likes, its tendency is to keep doubling down in the same direction.

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