Orion Spacecraft Ticking Off Milestones-Navy divers rehearse

In June,the Orion spacecraft crew module,or capsule,reached a milestone when it was sucessfully stacked on the service module at the Neil Armstrong Operations and Checkout Building at Kennedy Space Center.The three Orion components-the third component being the launch abort system that is attached to the top of the capsule-are being readied in the facility for December's Exploration Flight Test-1.
The stacked modules are in the Final Assembly and System Testing(FAST) cell,where they undergo final systems tests before being rolled out for mating with the Delta IV Heavy rocket.Power connections are made,and bolts and fluid connector are placed during this phase of mission preparation.There are also electrical,avionic and radio frequency tests.*
The unmanned EFT-1 will see Orion launched to 3600 miles above Earth for a two-orbit,4.5 hour test flight.During the flight,systems critical for manned deep space missions will be evaluated.Finally,the Orion capsule will reenter the atmosphere at nearly 20,000 miles an hour before parachute system deployment and splashdown in the Pacific,where a US Navy amphibious warfare vessel will retrieve it.Engineers will scrutinise the performance of Orion's heat shield,which is the largest ever built,and the adapter linking the spacecraft to its rocket.*
Early in June,US Navy divers trained for recovering the capsule at the NASA Neutral Bouyancy Lab in Houston.They got an overview of Orion's thermal protection system hardware;worked out procedures for installing the back-up horse collar fixture for a well deck recovery and the contingency basket lifting straps.They also rehearsed the baseline attachment approach using upgraded hardware and a forward bay cover flip operation so the capsule can be recovered and placed right side up on the ship.*
At the end of June,a rigorous parachute system test was conducted over the Arizona desert of the US Army's Yuma Proving Ground.An Orion crew module mock-up was pulled out of a C-17 aircraft at 35,000 feet.In the final complete parachute system sequence test before December's inaugural Orion spaceflight,engineers applied various stresses to the system,which it in fact breezed through.*
In 2017,Exploration Mission-1 will integrate Orion with the new Space Launch System rocket,the most powerful rocket in the history of spaceflight.Its booster is manufactured by Alliant Techsystems,while its first stage engine is by Pratt&Whitney Rocketdyne.Lockheed Martin builds the Orion spacecraft,designing it for missions to an asteroid and Mars.*
Lockheed Martin(LMT),United Technologies(UTX),Alliant Techsystems(ATK)