Redesigned field joint protection system installations were performed between 7 and 15 Nov 1989 at the Thiokol Corporation Static Test Bay T-18. The purpose of the installations was to develop procedures for two field joint protection system redesign concepts (Concepts 1 and 3), and to evaluate the processing capability of each concept. The Concept 1 (Double Cork Band Design) configuration consists of two cork bands with K5NA ablation compound applied between them and to the bottom edge of the aft cork band. The Concept 3 (K5NA Design) configuration consists of a single layer of K5NA over the joint/heater/sensor/pin retainer band area.
United States, National Aeronautics and Space Administration, "Thiokol/Wasatch Installation Evaluation of the Redesigned Field Joint Protection System (Concepts 1 and 3) Final Test Report" (1989). Miscellaney. Paper 2.