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Trajectory Algorithm to Support En Route and Terminal Area Self-Spacing Concepts: Fifth Revision.
| 题名： | Trajectory Algorithm to Support En Route and Terminal Area Self-Spacing Concepts: Fifth Revision. |
| 作者： | Abbott, T. S. |
| 摘要： | This document describes an algorithm for the generation of a four dimensional trajectory. Input data for this algorithm are similar to an augmented Standard Terminal Arrival (STAR) with the augmentation in the form of altitude or speed crossing restrictions at waypoints on the route. The algorithm calculates the altitude, speed, along path distance, and along path time for each of these waypoints. Wind data at each of these waypoints are also used for the calculation of ground speed and turn radius. This revision of the algorithm now accommodates linear decelerations between two speed-constrained waypoints. While this modification may appear trivial, the calculation of the deceleration rate cannot be accomplished using a closed-form solution. An iterative solution was developed that allowed for the variability of path distance due to speed influence on turn radii, Mach-CAS transition altitude, and the impact of wind on ground speed in calculating an accurate deceleration value. |
| 总页数： | 136 pages |
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