2. ASSEMBLE THE SPACECRAFT BUS.

• From sheet A, release the long, 10-section SPACECRAFT BUS. Bend so it becomes roughly circular, the silver and gold squares outside. Pinch a crease into each of the nine hinges between the bays.

• Position the tab at one end of the BUS between the ears at the other end. Bend the tab over so that it's flush with the front. Secure with glue.

• Notice that two of the tabs on one side of the BUS have arrows. One at a time, bend over each of the ten tabs on that side, going inward toward the center.

• Release the BUS SUPPORT from sheet A. Trim off any remaining rough edges. Smear a film of glue around the outside 1/4 inch on the blank white side, and position it up inside the SPACECRAFT BUS, to hold its shape. Bring it up into contact with the bent-over tabs. Place upside-down on a flat surface and press down the BUS SUPPORT so the ten tabs will flatten squarely and adhere to it.

  

• From sheet A, release the two halves of the PROPELLANT TANK. Join at right angles, and set its flat edge on the black + in the middle of the BUS SUPPORT, inside bus. Glue.

• Bend up the ten bottom sections of the SPACECRAFT BUS toward the center, forming a shelf at right angles to the walls of the bus.

  NOTE: the image shows the assembled Spacecraft Bus with the Propellant Tank (it also shows some trusswork which is to be added later).