In a recent milestone for the Manta Ray program, the Defense Advanced Research Projects Agency (DARPA) conducted the initial tests of an unmanned underwater vehicle (UUV) designed for long-term operations. The purpose of the experiment was to assess the capabilities of the sea drone, with each prototype UUV being developed by Pacmar Technologies and Northrop Grumman.
DARPA emphasized the significance of these tests, noting that they provided essential data for future large-scale trials in open waters and validated prior assumptions and models. This stage, which involved the UUV being submerged in water, marks a crucial milestone for the underwater program.
During the testing phase, the UUV performed various essential checks in the harbor of Hawaii’s Ohahu island. These checks included engine activation and buoyancy measurements, distinguishing this drone from previous unmanned underwater vehicles limited by short battery life due to energy constraints.
The Manta Ray program was initiated by DARPA four years ago to develop an underwater vehicle that can operate autonomously for extended periods without requiring human logistical support or maintenance.
The objectives of the Manta Ray project encompass the advancement of energy management technologies to enable the drone to harness energy from the marine environment, the creation of autonomous control and navigation systems, the development of novel methods for detecting and classifying underwater threats, and the implementation of measures to combat biofouling and corrosion for prolonged missions. The Manta Ray UUV is envisioned to support military and scientific endeavors, performing tasks such as intelligence operations, monitoring oceanic conditions, and gathering data.
A major area of focus lies in the development of energy management technologies that enable the drone to harvest energy at significant depths. DARPA has outlined several potential methods for energy generation, including capturing ocean waves, currents, and temperature gradients.
It is important to note that while Northrop Grumman plans to conduct water tests of its UUV prototype next year, DARPA anticipates conducting full-scale tests within the next 1.5 years.