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 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 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

Prototype satellite payload built at the University of Iowa designed to provide refined data on the Earth's Van Allen radiation belts over an extended period of time measuring electron and proton fluxes. The payload illustrates manufacturing techniques and standards prevalent in about 1960 in one of the leading university space research departments. From this prototype a flight model eventually became Explorer S-46 (NASM Catalogue #A19740876000), built by the Jet Propulsion Laboratory. This small octahedral-shaped spacecraft is equipped with solar cells on four of its faces. Explorer 46 was launched from Cape Canaveral on March 23, 1960 atop a Juno 2 vehicle. It failed to achieve orbit because the upper stage of the vehicle did not ignite. Elements of the S-46 payload have subsequently been donated to the collection by George Ludwig, the designer of the payload (NASM Catalogue numbers A20060086 - 012; 013; 014). The object was donated to NASM in March 1993 by James A. Van Allen who directed Ludwig's PhD work at Iowa.

Display Status

This object is on display in Space Science at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Space Science
Object Details
Country of Origin United States of America Type SPACECRAFT-Uncrewed-Parts & Structural Components Manufacturer University of Iowa
Dimensions 3-D (L x W x H) (with wood base): 32.4 × 32.4 × 61.6cm, 5.9kg (1 ft. 3/4 in. × 1 ft. 3/4 in. × 2 ft. 1/4 in., 13lb.)
Materials Overall - aluminum, phenolic parts, silicon panels
Inventory Number A19940232000 Credit Line Gift of James A. Van Allen and the University of Iowa Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.