Consists of five basic components as follows: (1) Main cylinder, 2 1/8 in. in outside diameter, 13 in. long, with fine threads throughout length; hollow, with 1 2/8 in. hole in top and bottom; threads discolored in some areas (darker on bottom); cylinder also has three rings of diagonal swirl grooves, one around the top periphery, one around the middle, and one around the lower periphery; below lower ring is a separate copper-colored groove, or channel, also around the periphery of this groove are drilled multiple equidistant holes; larger diameter retaining ring, 3 2/8 in. diameter, beneath copper-colored groove and also serving as end plate for main cylinder; six equidistant holes drilled vertically through retaining ring, with six corresponding chrome-plated rods thrust through them, all the rods encircling the main cylinder, nuts on ends of rods, and threads on opposite end of each rod; hexagonal nut fixed to bottom middle of main cylinder short, curved, chrome-plated propellant inlet pipe jutting from one of the six sides of the hexagonal nut, this pipe with loose-fitting brass-colored B-nut. Weight of this component, 2 lbs. (2) Separate outer cooling jacket, cylinder, or tube, hollow, 5 2/8 in. long,; 2 3/8 in. outside diameter; overall gray metal color, with very light surface rust. Weight of this component, .6 lbs. (3) Bottom motor unit [See, however, NOTES in MARKS], disc, chrome-plated, with six equidistant holes drilled vertically through base for accommodating retaining ring rods of main cylinder [component (1)]; chrome-plated short upright shaft projecting from middle of disc, with light, dull-aluminum colored hexagonal ring; short (2.25 in.) long propellant inlet jutting out horizontally from one side of upright shaft, with loose-fitting, brass-colored B-nut; diameter, outside, overall, 3 3/8 in.; with, with jutting propellant outlet, 5 in.; height, 1 6/8 in.; diameter, outside, hole in center of hexagonal ring, 1 2/8 in. Weight of this component, .6 lbs. (4) Two brass-colored halves of nozzle, or sleeves or collars, each 1 1/8 in. diameter; height, each, 1 in. (5) Nozzle, conical-shaped, with larger diameter to and bottom lips; copper-colored exterior of entire length of nozzle, between the lips; fine groves throughout the length of this section; chrome-plated top and lower lips; diameter, outside, of bottom lip, 1.5 in.; diameter, outside, top lip, 1 in. Weight, components 4 and 5, .2 lbs. Created by Smithsonian National Air and Space Museum Date Created Source Smithsonian National Air and Space Museum Keywords Exploration; Rockets; Space Rights and Restrictions Not determined
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