KC-135 Crew Reduction Feasibility Demonstration Simulation Study. Volume 3. Test and Evaluation

Abstract : In support of the KC-135 Avionics Modernization Program, a two-person (no-nav) conceptual cockpit design (Vol. 2) was evaluated using man-in-the-loop simulation. This report is Volume 3 of a 3-volume technical report. The objectives of the study were twofold: (1) To demonstrate the feasibility of the design and (2) Given the feasibility, to generate the functional requirements necessary to make such a design work. These requirements could later be used by SPO engineers as an aid in developing specific specifications. The simulation used 10 KC-135 crews and 2 KC-10 crews to demonstrate the feasibility of the design. Each crew was required to fly several missions over a period of 1 week. Subjective and objective measures of performance and workload were taken during and after each flight. The subjective workload measures (Subjective Workload Assessment Technique - SWAT, Subjective Workload Dominance (SWORD) technique and the Modified Cooper-Harper scale - MCH) and the various performance measures (i. e., airspeed, altitude, time control, etc.) provided convergent results supporting the feasibility of the conceptual design. Questionnaire data provided an additional analysis for determining those functions/subsystems deemed necessary for mission success. Recommendations of the functional requirements are discussed. Electronic Attitude Director Indicator (EADI), Electronic Heading Situation Indicator (EHSI), Control Display Unit (CDU).