Abstract
Inflight simulations of new aircraft and/or flight control systems often require considerable preparation time and expense. Our objective was to develop a new inflight simulator with a quick response capability. The Calspan Learjet 25 inflight simulator has been upgraded to meet this objective through implementation of a graphical block diagram programming system with autorqatic code generation. The simulation code is targetexto a set of floating point digital signal processors (DSP) wh\ch operate in parallel. The system is designed to be capa%le of full flight-envelope partial modelfollowing and employs new features to reduce checkout and calibration time. These include computer-flown test input sequences and on-line parameter identification. This paper describes the aircraft, its software development system, real-time computer hardware, user interface, and advanced inflight simulation and calibration methods. A quick response inflight simulation capability is now available to the aerospace industry which may be used as a tool in the development of new aircraft and flight control systems.
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