| Popis: |
This paper describes a control scheme used to quickly define a complicated trajectory for analysis of aircraft and spacecraft operations for which closed-form equations are not suitable. A “Trajectory Script” is a sequence of event-driven flight control commands that define a trajectory and “fly” the vehicle during simulation. A Trajectory Script can be developed in less than a minute, and can be changed and rerun in seconds. The method is implemented in the ROAST trajectory module of the RDS win aircraft design software, but could be applied to any time-dependent trajectory analysis. The paper describes the creation and operation of Trajectory Scripts, and discusses specific coded algorithms essential to implementing the concept in a time-domain trajectory simulation program. |
