Cylindrical with internal threads; a moveable disc, or flap, inside, with very small diameter wire shaft projecting from middle; three equidistant J-shaped projections inside end with threads, these projections preventing the disc or flap from fall out
Created by
Smithsonian National Air and Space Museum
Date Created
11/18/2021
Source
Smithsonian National Air and Space Museum
Keywords
Engineers; Rockets; Space
Rights and Restrictions
Usage conditions apply For more information, visit the Smithsonian’s Terms of Use.