Gallery: Discovery getting her replica engines

In preparation for displaying the space shuttle Discovery at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center, technicians began installing replica main engines on Monday.

Using previously-flown nozzles from old-generation engines, the replicas don't include the internal turbopumps, controllers or other parts. NASA is keeping its current-generation engines in protective storage for use aboard the future Space Launch System heavy-lift rocket

Monday's installation saw the Pratt & Whitney Rocketdyne-made engine get hauled from the prep shop over to Orbiter Processing Facility bay 1 and get inserted into Discovery's center-engine position.

See our coverage from Discovery's final mission.

Photo credit: NASA-KSC

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