The passive deployer mechanism will fly on Virginia Tech’s ThinSat mission, VT ThickSat, scheduled to launch along with the resupply mission to the ISS, NG-15. This mission is a proof-of-concept that could lead to similar deployable structures in future missions, e.g., solar sails and solar panel deployments. The mission-critical objective is to demonstrate a passive deployment mechanism in space. The boom is required to release itself from the coiled state using only its stored elastic energy. Furthermore, the mechanism takes advantage of a scalable chassis, built for the same mission, restricting it to fit within the space of a 5 x 1T ThinSat form factor. This poster showcases the design progression of the deployer