The Missile Defense Agency (MDA) in late May successfully tested in a pair of flight tests its enhanced MK 136 Third Stage Rocket Motor nozzle on the Raytheon [RTN] Standard Missile-3 (SM-3) Block IB in controlled test vehicles 01a/02, according to an Orbital ATK [OA] statement.

The missiles were launched from a Navy Aegis destroyer off the coast of Kauai, Hawaii. The primary objective of the flight tests was to demonstrate Orbital ATK’s enhanced nozzle, which improves performance of the SM-3 Block IB missile in a range of flight scenarios. The new nozzle features improvements to increase the robustness of the design across the operating environment.

A SM-3 1B launching off a Navy cruiser in Oct. 2013. Photo: Missile Defense Agency.
A SM-3 1B launching off a Navy cruiser in Oct. 2013. Photo: Missile Defense Agency.

Orbital ATK said the two tests provided additional validation of the improved nozzle and confirmed results seen in successful full-scale tests at the company’s facility in Elkton, Md., and the Air Force Rocket Laboratory test facility at Edwards AFB, Calif.

Orbital ATK supplies the enhanced nozzle to SM-3 prime contractor Raytheon.