Manta Ray underwater vehicle passes first military test

Northrop Grumman's Manta Ray project represents a significant leap forward in uncrewed underwater vehicle (UUV) technology, earning recognition for its potential to redefine undersea operations. Building upon 50 years of undersea expertise, Manta Ray delivers a new class of long-duration, long-range, payload-capable UUVs designed for persistent operations in dynamic maritime environments.

Northrop Grumman developed Manta Ray to directly address critical needs identified by the U.S. Defense Advanced Research Projects Agency (DARPA).

The vehicle is designed to be autonomous, eliminating the need for on-site human logistics and enabling missions in previously inaccessible ocean environments. It includes energy-saving techniques, including the ability to anchor to the seafloor and hibernate in a low-power state, as well as advanced buoyancy-driven gliding for efficient movement. The West Falls Church, Va.-based company said this demonstrates its focus on novel energy management and potential undersea energy harvesting.

Manta Ray’s modular design facilitates shipment in five standard shipping containers and in-field assembly, enabling rapid expeditionary deployment worldwide. Multiple payload bays of varying sizes and types support a wide range of naval mission sets, enhancing operational flexibility. Northrop Grumman completed full-scale, in-water testing off the coast of Southern California in February and March 2024.

Manta Ray incorporates innovations in low-power, high-efficiency undersea propulsion systems and low-power underwater detection and classification of hazards. It also includes mission management for extended durations in dynamic environments, using maritime data for efficient navigation and communication. The UUV has features mitigating biofouling, corrosion, and material degradation for long-duration missions.

The project aligns with DARPA's mission of creating strategic superiority through groundbreaking technology, and it is being transitioned to the U.S. Navy. Manta Ray's long-range capabilities have the potential to transform naval operations, scientific research, and commercial applications, solidifying Northrop Grumman's position as a leader in undersea innovation.

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