Changes between Version 18 and Version 19 of FS Guide


Ignore:
Timestamp:
Feb 16, 2008, 4:32:00 PM (12 years ago)
Author:
Stein Tore Erdal
Comment:

Speed of a task in FS

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  • FS Guide

    v18 v19  
    117117=== Speed of a task in FS ===
    118118
    119 FS will calculate and interpolate the SS and ES times from the tracklog when the pilot cross the cylinder/line. The average speed in the reports will be calculated on the total shortest distance from the takeoff, and might then be a little too high depending on the start gate and task type. (This might be improved further in later versions) The average speed is not used for scoring, so this is only a cosmetic error.
     119FS will calculate and interpolate the SS and ES times from the tracklog when the pilot cross the cylinder/line.
     120
     121The average speed in the reports is calculated as follows: [[BR]]
     122First we find the point on each turnpoint cylinder that gives the shortest distance from first turnpoint (Start) to last turnpoint (Goal) via the other turnpoints. [[BR]]
     123Then we find the distance from the point defined on the SS cylinder to the point defined on the ES cylinder via the points defined on the turnpoint cylinders in between.
     124''(Note: this is not always the shortest distance needed to fly from SS to ES as these turnpoints often is not first and last turnpoint.)'' [[BR]]
     125Then the avg. speed is the time used from SS to ES divided on the distance (found above). The SS time of a pilot is the actual time of the crossing in the case of "Elapsed time" task, otherwise the nearest "Start gate" prior to the actual time.
    120126
    121127=== Task types ===