Operational prototype for an instructor/operator station

This paper describes the implementation process for technology insertion into a real-time, human-in-theloop, flight simulator of the Space Shuttle used for astronaut training. The InstructorIOperator Station (10s) is a twelve year old, highly tailored subsystem that was not designed to easily accommodate changes in hardware and software technology. Since the Shuttle program is anticipated to run another 15 years, the objectives of the project were to identify and evaluate commercial off-the-shelf (COTS) hardware and software that meet defined requirements for the upgrade of the IOS in the training facility. The rationale for conducting the prototype was to find the best possible way to upgrade the IOS and minimize the life cycle costs for continuing operations. The paper illustrates the prototype architecture that was successfully used to establish the confidence of NASA management in the concept and to refine the technical requirements for the IOS upgrade. The paper also discusses the lessons learned in implementing an operational prototype in a complex real-time simulator as well as the plans for the future of the IOS.