DD(X) scale model testing successful

The DD(X) national team, led by Northrop Grumman and in partnership with Raytheon, General Dynamics, United Defense and Lockheed Martin, has successfully completed the underwater explosion (UNDEX) testing on the DD(X) quarter scale model. This test provided a critical step in demonstrating that the revolutionary multi-mission destroyer DD(X) wave piercing tumblehome hull form fully meets the operational requirements set forth by the U.S. Navy.

The primary purpose of the testing was to determine the DD(X) hull form’s reaction to an UNDEX to demonstrate the validity of the DD(X) design. Explosive charges were placed at predetermined distances from the DD(X) Model. Intensity of the charges increased as the test series progressed. A large plume resulted from the explosions and the DD(X) wave-piercing bow, tumblehome cross-section, step deck area and rising stern responded as predicted.

“The successful completion of this event increased the overall confidence level in the DD(X) hull design and was carried out at a fraction of the cost for testing a full-size model,” said Brian Cuccias, Northrop Grumman Vice President and DD(X) Program Manager. “We are meeting Phase III exit criteria and are eager to begin detail design of this truly revolutionary ship.”

The 150 foot (46 metres) DD(X) model was built at the Northrop Grumman Ingalls Shipyard in Pascagoula and mitigates risks associated with a new design at a nominal investment. The UNDEX tests were conducted by Northrop Grumman employees with the support of US Army personnel and under the auspices of the US Navy. Data collection and analysis continue and the knowledge of the hull form response, as well as lessons learned will be applied to Phase IV of the DD(X) program.