Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer

This is the RL-10, the world's first operational liquid-hydrogen/liquid oxygen high energy rocket engine and was re-startable in space. Two RL-10s, each of 15,000 pounds of thrust, made up the Centaur upper stage of Atlas and Titan launch vehicles. A cluster of six RL-10s also powered the second stage of the Saturn 1, a precursor to the Saturn V manned Project Apollo lunar launch vehicle.

The Atlas-Centaur first successfully flew in 1966 and was the first full-thrust re-start in space. Atlas-Centaur missions included Surveyor lunar probes, Mariner planetry probes, and Pioneers 10-11 to Jupiter and Saturn. This RL-10 was transffered in 1966 by NASA to the NASM.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date 1962 Country of Origin United States of America Type PROPULSION-Rocket Engines Manufacturer Pratt & Whitney
 Dimensions Overall: 70 in. long x 39 in. diameter (177.8 x 99.06cm)
 Materials Chamber, 347 stainless steel brazed with silver; piping, polished stainless steel; aluminum casting pump; heat exchanger of nickel alloy; pump, aluminum casting
 Inventory Number A19680011000 Credit Line Transferred from NASA, Marshall Space Flight Center Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.