Payload section and Electronics bay- A 6"x12" coupler is secured in the upper 6"x48" payload bay with six 8-32 blind nuts and screws. Four bulkheads (two coupler BH's, and two body tube BH's) were glued into two 'caps' that seal off the electronics bay. Kevlar was wraped inside the coupler to strengthen it. A 7/16"threaded rod runs through the whole length of the coupler with forged eyebolts at the ends to hold the 'caps' together and serve as recovery connection points. The other end of the recovery harness will be connected to two large u-bolts mounted in the top centering ring of the booster section.

Inside of coupler reinforced with two layers of Kevalr and one layer of fiberglass.