A Study of Techniques for Real-Time,On-Line Optimum Flight Path Control. Algorithms for Three-Dimensional,Minimum-Time Flight Paths with Two State Variables.

摘要

Study of three-dimensional,minimum-time turning maneuvers for supersonic fighter aircraft is described. An optimization algorithm is developed for computing the minimum-time paths for specified initial energy,final energy,and heading change. For turns which do not specify the final position,the optimum maneuvers comprise a one-parameter family of flight paths. All the optimum turns and their associated control variables can be presented in simple graphical form for a specified aircraft configuration. A feedback control diagram can be easily implemented in the airborne computer to provide real-time,on-line optimal flight path control. The numerical optimization required can be simplified to such an extent that the feedback charts could be updated on-board for aircraft configuration changes and atmospheric variations. Flow charts of the optimization algorithm are presented along with numerical results for an early model of the F-4fighter.