]> git.mxchange.org Git - flightgear.git/blobdiff - src/FDM/JSBSim/FGAerodynamics.cpp
First steps in a weather reorganization. Note especially that
[flightgear.git] / src / FDM / JSBSim / FGAerodynamics.cpp
index 666dca618efe6685bfcfe0da2d7c5da5bbf8dd1a..c8466f42d62febc84342351d896e62bb130ecfe9 100644 (file)
@@ -37,23 +37,18 @@ INCLUDES
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
 #include "FGAerodynamics.h"
+#include "FGFactorGroup.h"
+#include "FGCoefficient.h"
 
 static const char *IdSrc = "$Id$";
 static const char *IdHdr = ID_AERODYNAMICS;
 
-extern short debug_lvl;
-
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 CLASS IMPLEMENTATION
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
 
-FGAerodynamics::FGAerodynamics(FGFDMExec* FDMExec) : FGModel(FDMExec),
-    vMoments(3),
-    vForces(3),
-    vFs(3),
-    vLastFs(3),
-    vDXYZcg(3)
+FGAerodynamics::FGAerodynamics(FGFDMExec* FDMExec) : FGModel(FDMExec)
 {
   Name = "FGAerodynamics";
 
@@ -66,7 +61,7 @@ FGAerodynamics::FGAerodynamics(FGFDMExec* FDMExec) : FGModel(FDMExec),
 
   Coeff = new CoeffArray[6];
 
-  if (debug_lvl & 2) cout << "Instantiated: FGAerodynamics" << endl;
+  Debug(0);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -81,21 +76,17 @@ FGAerodynamics::~FGAerodynamics()
   }
   delete[] Coeff;
 
-  if (debug_lvl & 2) cout << "Destroyed:    FGAerodynamics" << endl;
+  Debug(1);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 bool FGAerodynamics::Run(void)
 {
-  float alpha, beta;
   unsigned int axis_ctr,ctr;
 
   if (!FGModel::Run()) {
 
-    alpha = Translation->Getalpha();
-    beta = Translation->Getbeta();
-
     vLastFs = vFs;
     vFs.InitMatrix();
 
@@ -104,19 +95,20 @@ bool FGAerodynamics::Run(void)
         vFs(axis_ctr+1) += Coeff[axis_ctr][ctr]->TotalValue();
       }
     }
+    //correct signs of drag and lift to wind axes convention
+    //positive forward, right, down
+    vFs(1)*=-1; vFs(3)*=-1;
+    //cout << "Aircraft::vFs: " << vFs << endl;
+    vForces = State->GetTs2b()*vFs;
 
-    vForces = State->GetTs2b(alpha, beta)*vFs;
-
-    // see http://home.earthlink.net/~apeden/jsbsim_moments_due_to_forces.txt
-    // for details on this
-
-    vDXYZcg(eX) = -(Aircraft->GetXYZrp(eX) - MassBalance->GetXYZcg(eX))/12.0;
-    vDXYZcg(eY) =  (Aircraft->GetXYZrp(eY) - MassBalance->GetXYZcg(eY))/12.0;
-    vDXYZcg(eZ) = -(Aircraft->GetXYZrp(eZ) - MassBalance->GetXYZcg(eZ))/12.0;
+    vDXYZcg(eX) = -(Aircraft->GetXYZrp(eX) 
+                      - MassBalance->GetXYZcg(eX))*inchtoft;
+    vDXYZcg(eY) =  (Aircraft->GetXYZrp(eY) 
+                      - MassBalance->GetXYZcg(eY))*inchtoft;
+    vDXYZcg(eZ) = -(Aircraft->GetXYZrp(eZ) 
+                      - MassBalance->GetXYZcg(eZ))*inchtoft;
 
-    vMoments(eL) = vForces(eZ)*vDXYZcg(eY) - vForces(eY)*vDXYZcg(eZ);
-    vMoments(eM) = vForces(eX)*vDXYZcg(eZ) - vForces(eZ)*vDXYZcg(eX);
-    vMoments(eN) = vForces(eY)*vDXYZcg(eX) - vForces(eX)*vDXYZcg(eY);
+    vMoments = vDXYZcg*vForces; // M = r X F
 
     for (axis_ctr = 0; axis_ctr < 3; axis_ctr++) {
       for (ctr = 0; ctr < Coeff[axis_ctr+3].size(); ctr++) {
@@ -137,14 +129,21 @@ bool FGAerodynamics::Load(FGConfigFile* AC_cfg)
 
   AC_cfg->GetNextConfigLine();
 
-  while ((token = AC_cfg->GetValue()) != "/AERODYNAMICS") {
+  while ((token = AC_cfg->GetValue()) != string("/AERODYNAMICS")) {
     if (token == "AXIS") {
       CoeffArray ca;
       axis = AC_cfg->GetValue("NAME");
       AC_cfg->GetNextConfigLine();
-      while ((token = AC_cfg->GetValue()) != "/AXIS") {
-        ca.push_back(new FGCoefficient(FDMExec, AC_cfg));
-        if (debug_lvl > 0) DisplayCoeffFactors(ca.back()->Getmultipliers());
+      while ((token = AC_cfg->GetValue()) != string("/AXIS")) {
+        if( token == "COEFFICIENT" ) {
+          ca.push_back( new FGCoefficient(FDMExec) );
+          ca.back()->Load(AC_cfg);
+          cm[ca.back()->Getname()]=ca.back();
+        } else if ( token == "GROUP" ) {
+          ca.push_back( new FGFactorGroup(FDMExec) );
+          ca.back()->Load(AC_cfg);
+          cm[ca.back()->Getname()]=ca.back();
+        }
       }
       Coeff[AxisIdx[axis]] = ca;
       AC_cfg->GetNextConfigLine();
@@ -156,19 +155,6 @@ bool FGAerodynamics::Load(FGConfigFile* AC_cfg)
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGAerodynamics::DisplayCoeffFactors(vector <eParam> multipliers)
-{
-  unsigned int i;
-
-  cout << "   Non-Dimensionalized by: ";
-
-  for (i=0; i<multipliers.size();i++) cout << State->paramdef[multipliers[i]];
-
-  cout << endl;
-}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
 string FGAerodynamics::GetCoefficientStrings(void)
 {
   string CoeffStrings = "";
@@ -182,7 +168,7 @@ string FGAerodynamics::GetCoefficientStrings(void)
       } else {
         CoeffStrings += ", ";
       }
-      CoeffStrings += Coeff[axis][sd]->Getname();
+      CoeffStrings += Coeff[axis][sd]->GetCoefficientStrings();
     }
   }
   return CoeffStrings;
@@ -193,7 +179,6 @@ string FGAerodynamics::GetCoefficientStrings(void)
 string FGAerodynamics::GetCoefficientValues(void)
 {
   string SDValues = "";
-  char buffer[10];
   bool firstime = true;
 
   for (unsigned int axis = 0; axis < 6; axis++) {
@@ -203,8 +188,7 @@ string FGAerodynamics::GetCoefficientValues(void)
       } else {
         SDValues += ", ";
       }
-      sprintf(buffer, "%9.6f", Coeff[axis][sd]->GetSD());
-      SDValues += string(buffer);
+      SDValues += Coeff[axis][sd]->GetCoefficientValues();
     }
   }
 
@@ -213,29 +197,54 @@ string FGAerodynamics::GetCoefficientValues(void)
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-float FGAerodynamics::GetNlf(void)
-{
-  if (fabs(Position->GetGamma()) < 1.57) {
-    return (vFs(eZ)/(MassBalance->GetWeight()*cos(Position->GetGamma())));
-  } else {
-    return 0.0;
-  }
-}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-float FGAerodynamics::GetLoD(void)
+double FGAerodynamics::GetLoD(void)
 {
-  float LoD;
-
   if (vFs(1) != 0.00) return vFs(3)/vFs(1);
   else                return 0.00;
 }
-
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-void FGAerodynamics::Debug(void)
+//    The bitmasked value choices are as follows:
+//    unset: In this case (the default) JSBSim would only print
+//       out the normally expected messages, essentially echoing
+//       the config files as they are read. If the environment
+//       variable is not set, debug_lvl is set to 1 internally
+//    0: This requests JSBSim not to output any messages
+//       whatsoever.
+//    1: This value explicity requests the normal JSBSim
+//       startup messages
+//    2: This value asks for a message to be printed out when
+//       a class is instantiated
+//    4: When this value is set, a message is displayed when a
+//       FGModel object executes its Run() method
+//    8: When this value is set, various runtime state variables
+//       are printed out periodically
+//    16: When set various parameters are sanity checked and
+//       a message is printed out when they go out of bounds
+
+void FGAerodynamics::Debug(int from)
 {
-    //TODO: Add your source code here
+  if (debug_lvl <= 0) return;
+
+  if (debug_lvl & 1) { // Standard console startup message output
+    if (from == 0) { // Constructor
+
+    }
+  }
+  if (debug_lvl & 2 ) { // Instantiation/Destruction notification
+    if (from == 0) cout << "Instantiated: FGAerodynamics" << endl;
+    if (from == 1) cout << "Destroyed:    FGAerodynamics" << endl;
+  }
+  if (debug_lvl & 4 ) { // Run() method entry print for FGModel-derived objects
+  }
+  if (debug_lvl & 8 ) { // Runtime state variables
+  }
+  if (debug_lvl & 16) { // Sanity checking
+  }
+  if (debug_lvl & 64) {
+    if (from == 0) { // Constructor
+      cout << IdSrc << endl;
+      cout << IdHdr << endl;
+    }
+  }
 }