When USS Anchorage (LPD 23) successfully recovered the reusable, unmanned NASA capsule Orion in the Pacific Ocean Dec. 5, it marked the culmination of nearly three years of testing, evaluating, and platform integration performed by Naval Sea Systems Command (NAVSEA).
NAVSEA's Surface Ship Program Management organization Engineering Directorate (SEA 05), together with Naval Surface Warfare Center Carderock Division's (NSWCCD) Radiation Technology, Environmental Occupational Safety and Health (EOSH), Ship Acquisition, and Systems Safety Branch, validated the at-sea testing procedures and hardware for NASA. As the Navy's lead engineering integration manager for the operation, NAVSEA's "safe and adequate" validation allowed for the successful recovery and transport of the Exploration Flight Test vehicle.
"Our role was to provide technical support to [US] Fleet Forces [Command] and NASA for the interface to the welldeck and the communication systems of the ship as they developed their test program," said Jay Stefany, Executive Director for Program Executive Office Ships. "We were an integral part from the technical support of their test program that led up to the actual successful recovery of this test vehicle."
NASA, Fleet Forces, and NAVSEA first began discussions regarding the use of a welldeck ship, specifically one from the new San Antonio-class amphibious transport dock ship, to retrieve test articles, such as Orion, in early 2012. This led to a series of Technical Interchange Meetings to address the capabilities and challenges of such a mission.
Using a "crawl, walk, run" progressive testing approach, the first simulated recovery, or crawl, took place in Norfolk in Aug. 2013 with a pier-side USS Arlington (LPD 24), thus negating any wave action. In Feb. 2014, USS San Diego (LPD 22) performed the next Underway Recovery Test (URT), which led to two additional URTs of increasing sea states using USS Anchorage in August and September, respectively, during the "walk/run" phase. The goal of the final URT "run phase" was to test the equipment and procedures up to the maximum design capabilities.
"Because of conditions experienced in the well[deck] during the recovery using LPD 22, modifications were required to the retrieval hardware and procedures to account for higher wave actions," said Bob Ramsay, LPD In-Service Ship Design Manager. "As a result of the extensive testing and modifications, everything went per design."
Launched from the Kennedy Space Center in Cape Canaveral, Fla., the Orion Multi-Purpose Crew Vehicle (MPCV) is a beyond-low-earth-orbit spacecraft being built by Lockheed Martin for NASA based on designs and tests already completed as part of the cancelled Constellation Program. Though unmanned for this most recent evolution, plans for the four-astronaut capsule include use for missions to the moon, asteroids, International Space Station and/or Mars.
The recent launch and recovery have been likened to Apollo in the 1970s, but unlike the Apollo recovery, also an ocean splashdown, Orion cannot be helicopter lifted because of its larger size, both in weight and diameter. Additionally, the extraction of astronauts to a medical facility requires a stable platform which a helicopter recovery method would not be able to support safely.
While the latest NASA test involved an unmanned capsule, an additional unmanned lunar orbit flight test (EM-1) is scheduled for 2017, to be followed by a manned lunar orbit flight test (EM-2) launch in 2021.
NAVSEA 05 is a function of Program Executive Office Ships, and is NAVSEA's engineering directorate. It works closely with the acquisition community in the technical development and support of the Navy's surface ships.
NSWC Carderock leads the Navy in hull, mechanical and electrical engineering expertise and delivers technical solutions in order to build and sustain a dominant, ready and affordable fleet.
Source: US Navy
Date: Dec 15, 2014