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  1. GMAT
  2. GMT-5993

Thrust History File Accuracy Question

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      I ran the same regression test, THF_ThrustMass_ECI_None_None_3minutes_UnitZ, on two different GMAT builds.

      (1) 3/3/17 Build

      (2) Low thrust build DJC delivered 9/22/16.

      The accuracy of both builds was quite good. However, the second build had better accuracy as shown below. Is this to be expected?

      Build 1 Results below:

      SC.X                      SC.Y                      SC.Z                      SC.VX                     SC.VY                     SC.VZ                     SC.ChemicalTank1.FuelMass   
      0                         0                         10000                     0                         0                         0                         85                          
      SC.X                      SC.Y                      SC.Z                      SC.VX                     SC.VY                     SC.VZ                     SC.ChemicalTank1.FuelMass   
      0                         0                         10000.16209728734         0                         0                         0.001801621945254559      84.82000000013711           
      Xerror                    Yerror                    Zerror                    VXerror                   VYerror                   VZerror                   MassError                 
      0                         0                         2.637534635141492e-10     0                         0                         1.373630592951813e-12     1.371205371469841e-10     
      

      Build 2 Results below:

      SC.X                      SC.Y                      SC.Z                      SC.VX                     SC.VY                     SC.VZ                     SC.ChemicalTank1.FuelMass   
      0                         0                         10000                     0                         0                         0                         85                          
      SC.X                      SC.Y                      SC.Z                      SC.VX                     SC.VY                     SC.VZ                     SC.ChemicalTank1.FuelMass   
      0                         0                         10000.16209728758         0                         0                         0.001801621946628185      84.81999999999999           
      Xerror                    Yerror                    Zerror                    VXerror                   VYerror                   VZerror                   MassError                 
      0                         0                         2.364686224609613e-11     0                         0                         4.98732999343332e-18      0                         
      

      The same thing happened on about 6 other regression tests as well.

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