]> git.mxchange.org Git - flightgear.git/blobdiff - src/FDM/JSBSim/FGState.cpp
Fix stall widths for the "auxilliary" (reverse flow) stalls so they
[flightgear.git] / src / FDM / JSBSim / FGState.cpp
index 06284619512d368fc44aa0d029391900b1478d5d..1802205b30db0a4f6fb71a548f732afcc01d61c0 100644 (file)
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-                                                                       
+
  Module:       FGState.cpp
  Author:       Jon Berndt
  Date started: 11/17/98
  Called by:    FGFDMExec and accessed by all models.
+
  ------------- Copyright (C) 1999  Jon S. Berndt (jsb@hal-pc.org) -------------
+
  This program is free software; you can redistribute it and/or modify it under
  the terms of the GNU General Public License as published by the Free Software
  Foundation; either version 2 of the License, or (at your option) any later
  version.
+
  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  details.
+
  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  Place - Suite 330, Boston, MA  02111-1307, USA.
+
  Further information about the GNU General Public License can also be found on
  the world wide web at http://www.gnu.org.
+
 FUNCTIONAL DESCRIPTION
 --------------------------------------------------------------------------------
 See header file.
+
 HISTORY
 --------------------------------------------------------------------------------
 11/17/98   JSB   Created
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 INCLUDES
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
 #ifdef FGFS
 #  include <simgear/compiler.h>
-#  ifdef SG_HAVE_STD_INCLUDES
-#    include <cmath>
-#  else
+#  include <math.h>
+#else
+#  if defined(sgi) && !defined(__GNUC__)
 #    include <math.h>
+#  else
+#    include <cmath>
 #  endif
-#else
-#  include <cmath>
 #endif
 
-#ifndef M_PI 
-#  include <simgear/constants.h>
-#  define M_PI SG_PI
+#ifdef _WIN32
+//#define snprintf _snprintf
 #endif
 
 #include "FGState.h"
-#include "FGFDMExec.h"
-#include "FGAtmosphere.h"
-#include "FGFCS.h"
-#include "FGAircraft.h"
-#include "FGTranslation.h"
-#include "FGRotation.h"
-#include "FGPosition.h"
-#include "FGAuxiliary.h"
-#include "FGOutput.h"
-
-static const char *IdSrc = "$Header$";
+
+namespace JSBSim {
+
+static const char *IdSrc = "$Id$";
 static const char *IdHdr = ID_STATE;
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 MACROS
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
-#define RegisterVariable(ID,DEF) coeffdef[#ID] = ID; paramdef[ID] = DEF
-
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 CLASS IMPLEMENTATION
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-//
-// For every term registered here there must be a corresponding handler in
-// GetParameter() below that retrieves that parameter. Also, there must be an
-// entry in the enum eParam definition in FGDefs.h. The ID is what must be used
-// in any config file entry which references that item.
-
-FGState::FGState(FGFDMExec* fdex) : mTb2l(3,3),
-    mTl2b(3,3),
-    mTs2b(3,3),
-    vQtrn(4)
+FGState::FGState(FGFDMExec* fdex)
 {
   FDMExec = fdex;
 
-  a = 1000.0;
   sim_time = 0.0;
   dt = 1.0/120.0;
 
-  RegisterVariable(FG_QBAR,           " qbar "           );
-  RegisterVariable(FG_WINGAREA,       " wing_area "      );
-  RegisterVariable(FG_WINGSPAN,       " wingspan "       );
-  RegisterVariable(FG_CBAR,           " cbar "           );
-  RegisterVariable(FG_ALPHA,          " alpha "          );
-  RegisterVariable(FG_ALPHADOT,       " alphadot "       );
-  RegisterVariable(FG_BETA,           " beta "           );
-  RegisterVariable(FG_BETADOT,        " betadot "        );
-  RegisterVariable(SG_PITCHRATE,      " pitch_rate "     );
-  RegisterVariable(FG_ROLLRATE,       " roll_rate "      );
-  RegisterVariable(FG_YAWRATE,        " yaw_rate "       );
-  RegisterVariable(FG_MACH,           " mach "           );
-  RegisterVariable(FG_ALTITUDE,       " altitude "       );
-  RegisterVariable(FG_BI2VEL,         " BI2Vel "         );
-  RegisterVariable(FG_CI2VEL,         " CI2Vel "         );
-  RegisterVariable(FG_ELEVATOR_POS,   " elevator_pos "   );
-  RegisterVariable(FG_AILERON_POS,    " aileron_pos "    );
-  RegisterVariable(FG_RUDDER_POS,     " rudder_pos "     );
-  RegisterVariable(FG_SPDBRAKE_POS,   " speedbrake_pos " );
-  RegisterVariable(FG_SPOILERS_POS,   " spoiler_pos "    );
-  RegisterVariable(FG_FLAPS_POS,      " flaps_pos "      );
-  RegisterVariable(FG_ELEVATOR_CMD,   " elevator_cmd "   );
-  RegisterVariable(FG_AILERON_CMD,    " aileron_cmd "    );
-  RegisterVariable(FG_RUDDER_CMD,     " rudder_cmd "     );
-  RegisterVariable(FG_SPDBRAKE_CMD,   " speedbrake_cmd " );
-  RegisterVariable(FG_SPOILERS_CMD,   " spoiler_cmd "    );
-  RegisterVariable(FG_FLAPS_CMD,      " flaps_cmd "      );
-  RegisterVariable(FG_THROTTLE_CMD,   " throttle_cmd "   );
-  RegisterVariable(FG_THROTTLE_POS,   " throttle_pos "   );
-  RegisterVariable(FG_HOVERB,         " height/span "    );
-  RegisterVariable(SG_PITCH_TRIM_CMD, " pitch_trim_cmd " );
-}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-FGState::~FGState(void) {}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-float FGState::GetParameter(eParam val_idx) {
-  switch(val_idx) {
-  case FG_QBAR:
-    return FDMExec->GetTranslation()->Getqbar();
-  case FG_WINGAREA:
-    return FDMExec->GetAircraft()->GetWingArea();
-  case FG_WINGSPAN:
-    return FDMExec->GetAircraft()->GetWingSpan();
-  case FG_CBAR:
-    return FDMExec->GetAircraft()->Getcbar();
-  case FG_ALPHA:
-    return FDMExec->GetTranslation()->Getalpha();
-  case FG_ALPHADOT:
-    return FDMExec->GetTranslation()->Getadot();
-  case FG_BETA:
-    return FDMExec->GetTranslation()->Getbeta();
-  case FG_BETADOT:
-    return FDMExec->GetTranslation()->Getbdot();
-  case SG_PITCHRATE:
-    return (FDMExec->GetRotation()->GetPQR())(2);
-  case FG_ROLLRATE:
-    return (FDMExec->GetRotation()->GetPQR())(1);
-  case FG_YAWRATE:
-    return (FDMExec->GetRotation()->GetPQR())(3);
-  case FG_ELEVATOR_POS:
-    return FDMExec->GetFCS()->GetDePos();
-  case FG_AILERON_POS:
-    return FDMExec->GetFCS()->GetDaPos();
-  case FG_RUDDER_POS:
-    return FDMExec->GetFCS()->GetDrPos();
-  case FG_SPDBRAKE_POS:
-    return FDMExec->GetFCS()->GetDsbPos();
-  case FG_SPOILERS_POS:
-    return FDMExec->GetFCS()->GetDspPos();
-  case FG_FLAPS_POS:
-    return FDMExec->GetFCS()->GetDfPos();
-  case FG_ELEVATOR_CMD:
-    return FDMExec->GetFCS()->GetDeCmd();
-  case FG_AILERON_CMD:
-    return FDMExec->GetFCS()->GetDaCmd();
-  case FG_RUDDER_CMD:
-    return FDMExec->GetFCS()->GetDrCmd();
-  case FG_SPDBRAKE_CMD:
-    return FDMExec->GetFCS()->GetDsbCmd();
-  case FG_SPOILERS_CMD:
-    return FDMExec->GetFCS()->GetDspCmd();
-  case FG_FLAPS_CMD:
-    return FDMExec->GetFCS()->GetDfCmd();
-  case FG_MACH:
-    return FDMExec->GetTranslation()->GetMach();
-  case FG_ALTITUDE:
-    return FDMExec->GetPosition()->Geth();
-  case FG_BI2VEL:
-    if(FDMExec->GetTranslation()->GetVt() > 0)
-        return FDMExec->GetAircraft()->GetWingSpan()/(2.0 * FDMExec->GetTranslation()->GetVt());
-    else
-        return 0;
-  case FG_CI2VEL:
-    if(FDMExec->GetTranslation()->GetVt() > 0)
-        return FDMExec->GetAircraft()->Getcbar()/(2.0 * FDMExec->GetTranslation()->GetVt());
-    else
-        return 0;
-  case FG_THROTTLE_CMD:
-    return FDMExec->GetFCS()->GetThrottleCmd(0);
-  case FG_THROTTLE_POS:
-    return FDMExec->GetFCS()->GetThrottlePos(0);
-  case FG_HOVERB:
-    return FDMExec->GetPosition()->GetHOverB();
-  case SG_PITCH_TRIM_CMD:
-    return FDMExec->GetFCS()->GetPitchTrimCmd();
-  default:
-    cerr << "FGState::GetParameter() - No handler for parameter " << val_idx << endl;
-    return 0.0;
-  }
-  return 0;
-}
+  Aircraft     = FDMExec->GetAircraft();
+  Propagate    = FDMExec->GetPropagate();
+  Auxiliary    = FDMExec->GetAuxiliary();
+  FCS          = FDMExec->GetFCS();
+  Output       = FDMExec->GetOutput();
+  Atmosphere   = FDMExec->GetAtmosphere();
+  Aerodynamics = FDMExec->GetAerodynamics();
+  GroundReactions = FDMExec->GetGroundReactions();
+  Propulsion      = FDMExec->GetPropulsion();
+  PropertyManager = FDMExec->GetPropertyManager();
 
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+  bind();
 
-float FGState::GetParameter(string val_string) {
-  return GetParameter(coeffdef[val_string]);
+  Debug(0);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-eParam FGState::GetParameterIndex(string val_string) {
-  return coeffdef[val_string];
+FGState::~FGState()
+{
+  unbind();
+  Debug(1);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGState::SetParameter(eParam val_idx, float val) {
-  switch(val_idx) {
-  case FG_ELEVATOR_POS:
-    FDMExec->GetFCS()->SetDePos(val);
-    break;
-  case FG_AILERON_POS:
-    FDMExec->GetFCS()->SetDaPos(val);
-    break;
-  case FG_RUDDER_POS:
-    FDMExec->GetFCS()->SetDrPos(val);
-    break;
-  case FG_SPDBRAKE_POS:
-    FDMExec->GetFCS()->SetDsbPos(val);
-    break;
-  case FG_SPOILERS_POS:
-    FDMExec->GetFCS()->SetDspPos(val);
-    break;
-  case FG_FLAPS_POS:
-    FDMExec->GetFCS()->SetDfPos(val);
-    break;
-  case FG_THROTTLE_POS:
-    FDMExec->GetFCS()->SetThrottlePos(-1,val);
-  }
-}
-
-//***************************************************************************
-//
-// Reset: Assume all angles READ FROM FILE IN DEGREES !!
-//
-
-bool FGState::Reset(string path, string acname, string fname) {
-  string resetDef;
-  float U, V, W;
-  float phi, tht, psi;
-  float latitude, longitude, h;
-
-  resetDef = path + "/" + acname + "/" + fname + ".xml";
-
-  ifstream resetfile(resetDef.c_str());
-
-  if (resetfile) {
-    resetfile >> U;
-    resetfile >> V;
-    resetfile >> W;
-    resetfile >> latitude;
-    resetfile >> longitude;
-    resetfile >> phi;
-    resetfile >> tht;
-    resetfile >> psi;
-    resetfile >> h;
-    resetfile.close();
-
-    FDMExec->GetPosition()->SetLatitude(latitude*DEGTORAD);
-    FDMExec->GetPosition()->SetLongitude(longitude*DEGTORAD);
-    FDMExec->GetPosition()->Seth(h);
-
-    Initialize(U, V, W, phi*DEGTORAD, tht*DEGTORAD, psi*DEGTORAD,
-               latitude*DEGTORAD, longitude*DEGTORAD, h);
-
-    return true;
-  } else {
-    cerr << "Unable to load reset file " << fname << endl;
-    return false;
-  }
-}
-
-//***************************************************************************
-//
-// Initialize: Assume all angles GIVEN IN RADIANS !!
-//
+void FGState::Initialize(FGInitialCondition *FGIC)
+{
+  sim_time = 0.0;
 
-void FGState::Initialize(float U, float V, float W,
-                         float phi, float tht, float psi,
-                         float Latitude, float Longitude, float H) {
-  FGColumnVector vUVW(3);
-  FGColumnVector vLocalVelNED(3);
-  FGColumnVector vEuler(3);
-  float alpha, beta;
-  float qbar, Vt;
+  Propagate->SetInitialState( FGIC );
 
-  FDMExec->GetPosition()->SetLatitude(Latitude);
-  FDMExec->GetPosition()->SetLongitude(Longitude);
-  FDMExec->GetPosition()->Seth(H);
+  Atmosphere->Run();
+  Atmosphere->SetWindNED( FGIC->GetWindNFpsIC(),
+                          FGIC->GetWindEFpsIC(),
+                          FGIC->GetWindDFpsIC() );
 
-  FDMExec->GetAtmosphere()->Run();
+  FGColumnVector3 vAeroUVW;
+  vAeroUVW = Propagate->GetUVW() + Propagate->GetTl2b()*Atmosphere->GetWindNED();
 
-  if (W != 0.0)
-    alpha = U*U > 0.0 ? atan2(W, U) : 0.0;
+  double alpha, beta;
+  if (vAeroUVW(eW) != 0.0)
+    alpha = vAeroUVW(eU)*vAeroUVW(eU) > 0.0 ? atan2(vAeroUVW(eW), vAeroUVW(eU)) : 0.0;
   else
     alpha = 0.0;
-  if (V != 0.0)
-    beta = U*U+W*W > 0.0 ? atan2(V, (fabs(U)/U)*sqrt(U*U + W*W)) : 0.0;
+  if (vAeroUVW(eV) != 0.0)
+    beta = vAeroUVW(eU)*vAeroUVW(eU)+vAeroUVW(eW)*vAeroUVW(eW) > 0.0 ? atan2(vAeroUVW(eV), (fabs(vAeroUVW(eU))/vAeroUVW(eU))*sqrt(vAeroUVW(eU)*vAeroUVW(eU) + vAeroUVW(eW)*vAeroUVW(eW))) : 0.0;
   else
     beta = 0.0;
 
-  vUVW << U << V << W;
-  FDMExec->GetTranslation()->SetUVW(vUVW);
+  Auxiliary->SetAB(alpha, beta);
 
-  vEuler << phi << tht << psi;
-  FDMExec->GetRotation()->SetEuler(vEuler);
+  double Vt = vAeroUVW.Magnitude();
+  Auxiliary->SetVt(Vt);
 
-  FDMExec->GetTranslation()->SetAB(alpha, beta);
+  Auxiliary->SetMach(Vt/Atmosphere->GetSoundSpeed());
 
-  Vt = sqrt(U*U + V*V + W*W);
-  FDMExec->GetTranslation()->SetVt(Vt);
-
-  FDMExec->GetTranslation()->SetMach(Vt/FDMExec->GetAtmosphere()->GetSoundSpeed());
-
-  qbar = 0.5*(U*U + V*V + W*W)*FDMExec->GetAtmosphere()->GetDensity();
-  FDMExec->GetTranslation()->Setqbar(qbar);
-
-  InitMatrices(phi, tht, psi);
-
-  vLocalVelNED = mTb2l*vUVW;
-  FDMExec->GetPosition()->SetvVel(vLocalVelNED);
+  double qbar = 0.5*Vt*Vt*Atmosphere->GetDensity();
+  Auxiliary->Setqbar(qbar);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGState::Initialize(FGInitialCondition *FGIC) {
+FGMatrix33& FGState::GetTs2b(void)
+{
+  double ca, cb, sa, sb;
 
-  float tht,psi,phi;
-  float U, V, W, h;
-  float latitude, longitude;
+  double alpha = Auxiliary->Getalpha();
+  double beta  = Auxiliary->Getbeta();
 
-  latitude = FGIC->GetLatitudeRadIC();
-  longitude = FGIC->GetLongitudeRadIC();
-  h = FGIC->GetAltitudeFtIC();
-  U = FGIC->GetUBodyFpsIC();
-  V = FGIC->GetVBodyFpsIC();
-  W = FGIC->GetWBodyFpsIC();
-  tht = FGIC->GetThetaRadIC();
-  phi = FGIC->GetPhiRadIC();
-  psi = FGIC->GetPsiRadIC();
+  ca = cos(alpha);
+  sa = sin(alpha);
+  cb = cos(beta);
+  sb = sin(beta);
 
-  Initialize(U, V, W, phi, tht, psi, latitude, longitude, h);
-  
-  FDMExec->GetPosition()->SetSeaLevelRadius( FGIC->GetSeaLevelRadiusFtIC() );
-  FDMExec->GetPosition()->SetRunwayRadius( FGIC->GetSeaLevelRadiusFtIC() + 
-                                             FGIC->GetTerrainAltitudeFtIC() );
+  mTs2b(1,1) = ca*cb;
+  mTs2b(1,2) = -ca*sb;
+  mTs2b(1,3) = -sa;
+  mTs2b(2,1) = sb;
+  mTs2b(2,2) = cb;
+  mTs2b(2,3) = 0.0;
+  mTs2b(3,1) = sa*cb;
+  mTs2b(3,2) = -sa*sb;
+  mTs2b(3,3) = ca;
 
+  return mTs2b;
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-bool FGState::StoreData(string fname) {
-  ofstream datafile(fname.c_str());
-
-  if (datafile) {
-    datafile << (FDMExec->GetTranslation()->GetUVW())(1);
-    datafile << (FDMExec->GetTranslation()->GetUVW())(2);
-    datafile << (FDMExec->GetTranslation()->GetUVW())(3);
-    datafile << FDMExec->GetPosition()->GetLatitude();
-    datafile << FDMExec->GetPosition()->GetLongitude();
-    datafile << (FDMExec->GetRotation()->GetEuler())(1);
-    datafile << (FDMExec->GetRotation()->GetEuler())(2);
-    datafile << (FDMExec->GetRotation()->GetEuler())(3);
-    datafile << FDMExec->GetPosition()->Geth();
-    datafile.close();
-    return true;
-  } else {
-    cerr << "Could not open dump file " << fname << endl;
-    return false;
-  }
-}
+FGMatrix33& FGState::GetTb2s(void)
+{
+  double alpha,beta;
+  double ca, cb, sa, sb;
 
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+  alpha = Auxiliary->Getalpha();
+  beta  = Auxiliary->Getbeta();
 
-void FGState::InitMatrices(float phi, float tht, float psi) {
-  float thtd2, psid2, phid2;
-  float Sthtd2, Spsid2, Sphid2;
-  float Cthtd2, Cpsid2, Cphid2;
-  float Cphid2Cthtd2;
-  float Cphid2Sthtd2;
-  float Sphid2Sthtd2;
-  float Sphid2Cthtd2;
-
-  thtd2 = tht/2.0;
-  psid2 = psi/2.0;
-  phid2 = phi/2.0;
-
-  Sthtd2 = sin(thtd2);
-  Spsid2 = sin(psid2);
-  Sphid2 = sin(phid2);
-
-  Cthtd2 = cos(thtd2);
-  Cpsid2 = cos(psid2);
-  Cphid2 = cos(phid2);
-
-  Cphid2Cthtd2 = Cphid2*Cthtd2;
-  Cphid2Sthtd2 = Cphid2*Sthtd2;
-  Sphid2Sthtd2 = Sphid2*Sthtd2;
-  Sphid2Cthtd2 = Sphid2*Cthtd2;
-
-  vQtrn(1) = Cphid2Cthtd2*Cpsid2 + Sphid2Sthtd2*Spsid2;
-  vQtrn(2) = Sphid2Cthtd2*Cpsid2 - Cphid2Sthtd2*Spsid2;
-  vQtrn(3) = Cphid2Sthtd2*Cpsid2 + Sphid2Cthtd2*Spsid2;
-  vQtrn(4) = Cphid2Cthtd2*Spsid2 - Sphid2Sthtd2*Cpsid2;
-
-  CalcMatrices();
-}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+  ca = cos(alpha);
+  sa = sin(alpha);
+  cb = cos(beta);
+  sb = sin(beta);
 
-void FGState::CalcMatrices(void) {
-  float Q0Q0, Q1Q1, Q2Q2, Q3Q3;
-  float Q0Q1, Q0Q2, Q0Q3, Q1Q2;
-  float Q1Q3, Q2Q3;
-
-  Q0Q0 = vQtrn(1)*vQtrn(1);
-  Q1Q1 = vQtrn(2)*vQtrn(2);
-  Q2Q2 = vQtrn(3)*vQtrn(3);
-  Q3Q3 = vQtrn(4)*vQtrn(4);
-  Q0Q1 = vQtrn(1)*vQtrn(2);
-  Q0Q2 = vQtrn(1)*vQtrn(3);
-  Q0Q3 = vQtrn(1)*vQtrn(4);
-  Q1Q2 = vQtrn(2)*vQtrn(3);
-  Q1Q3 = vQtrn(2)*vQtrn(4);
-  Q2Q3 = vQtrn(3)*vQtrn(4);
-
-  mTl2b(1,1) = Q0Q0 + Q1Q1 - Q2Q2 - Q3Q3;
-  mTl2b(1,2) = 2*(Q1Q2 + Q0Q3);
-  mTl2b(1,3) = 2*(Q1Q3 - Q0Q2);
-  mTl2b(2,1) = 2*(Q1Q2 - Q0Q3);
-  mTl2b(2,2) = Q0Q0 - Q1Q1 + Q2Q2 - Q3Q3;
-  mTl2b(2,3) = 2*(Q2Q3 + Q0Q1);
-  mTl2b(3,1) = 2*(Q1Q3 + Q0Q2);
-  mTl2b(3,2) = 2*(Q2Q3 - Q0Q1);
-  mTl2b(3,3) = Q0Q0 - Q1Q1 - Q2Q2 + Q3Q3;
-
-  mTb2l = mTl2b;
-  mTb2l.T();
+  mTb2s(1,1) = ca*cb;
+  mTb2s(1,2) = sb;
+  mTb2s(1,3) = sa*cb;
+  mTb2s(2,1) = -ca*sb;
+  mTb2s(2,2) = cb;
+  mTb2s(2,3) = -sa*sb;
+  mTb2s(3,1) = -sa;
+  mTb2s(3,2) = 0.0;
+  mTb2s(3,3) = ca;
+
+  return mTb2s;
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGState::IntegrateQuat(FGColumnVector vPQR, int rate) {
-  static FGColumnVector vlastQdot(4);
-  static FGColumnVector vQdot(4);
-
-  vQdot(1) = -0.5*(vQtrn(2)*vPQR(eP) + vQtrn(3)*vPQR(eQ) + vQtrn(4)*vPQR(eR));
-  vQdot(2) =  0.5*(vQtrn(1)*vPQR(eP) + vQtrn(3)*vPQR(eR) - vQtrn(4)*vPQR(eQ));
-  vQdot(3) =  0.5*(vQtrn(1)*vPQR(eQ) + vQtrn(4)*vPQR(eP) - vQtrn(2)*vPQR(eR));
-  vQdot(4) =  0.5*(vQtrn(1)*vPQR(eR) + vQtrn(2)*vPQR(eQ) - vQtrn(3)*vPQR(eP));
-
-  vQtrn += 0.5*dt*rate*(vlastQdot + vQdot);
-
-  vQtrn.Normalize();
+void FGState::ReportState(void)
+{
+#if 0
+#if !defined(__BORLANDCPP__)
+  char out[80], flap[10], gear[12];
+
+  cout << endl << "  JSBSim State" << endl;
+  snprintf(out,80,"    Weight: %7.0f lbs.  CG: %5.1f, %5.1f, %5.1f inches\n",
+                   FDMExec->GetMassBalance()->GetWeight(),
+                   FDMExec->GetMassBalance()->GetXYZcg(1),
+                   FDMExec->GetMassBalance()->GetXYZcg(2),
+                   FDMExec->GetMassBalance()->GetXYZcg(3));
+  cout << out;
+  if ( FCS->GetDfPos() <= 0.01)
+    snprintf(flap,10,"Up");
+  else
+    snprintf(flap,10,"%2.0f",FCS->GetDfPos());
 
-  vlastQdot = vQdot;
+  if (FCS->GetGearPos() < 0.01)
+    snprintf(gear,12,"Up");
+  else if (FCS->GetGearPos() > 0.99)
+    snprintf(gear,12,"Down");
+  else
+    snprintf(gear,12,"In Transit");
+
+  snprintf(out,80, "    Flaps: %3s  Gear: %12s\n",flap,gear);
+  cout << out;
+  snprintf(out,80, "    Speed: %4.0f KCAS  Mach: %5.2f\n",
+                    Auxiliary->GetVcalibratedKTS(),
+                    Auxiliary->GetMach() );
+  cout << out;
+  snprintf(out,80, "    Altitude: %7.0f ft.  AGL Altitude: %7.0f ft.\n",
+                    Propagate->Geth(),
+                    Propagate->GetDistanceAGL() );
+  cout << out;
+  snprintf(out,80, "    Angle of Attack: %6.2f deg  Pitch Angle: %6.2f deg\n",
+                    Auxiliary->Getalpha()*radtodeg,
+                    Propagate->Gettht()*radtodeg );
+  cout << out;
+  snprintf(out,80, "    Flight Path Angle: %6.2f deg  Climb Rate: %5.0f ft/min\n",
+                    Auxiliary->GetGamma()*radtodeg,
+                    Propagate->Gethdot()*60 );
+  cout << out;
+  snprintf(out,80, "    Normal Load Factor: %4.2f g's  Pitch Rate: %5.2f deg/s\n",
+                    Aircraft->GetNlf(),
+                    Propagate->GetPQR(2)*radtodeg );
+  cout << out;
+  snprintf(out,80, "    Heading: %3.0f deg true  Sideslip: %5.2f deg  Yaw Rate: %5.2f deg/s\n",
+                    Propagate->Getpsi()*radtodeg,
+                    Auxiliary->Getbeta()*radtodeg,
+                    Propagate->GetPQR(3)*radtodeg  );
+  cout << out;
+  snprintf(out,80, "    Bank Angle: %5.2f deg  Roll Rate: %5.2f deg/s\n",
+                    Propagate->Getphi()*radtodeg,
+                    Propagate->GetPQR(1)*radtodeg );
+  cout << out;
+  snprintf(out,80, "    Elevator: %5.2f deg  Left Aileron: %5.2f deg  Rudder: %5.2f deg\n",
+                    FCS->GetDePos(ofRad)*radtodeg,
+                    FCS->GetDaLPos(ofRad)*radtodeg,
+                    FCS->GetDrPos(ofRad)*radtodeg );
+  cout << out;
+  snprintf(out,80, "    Throttle: %5.2f%c\n",
+                    FCS->GetThrottlePos(0)*100,'%' );
+  cout << out;
+
+  snprintf(out,80, "    Wind Components: %5.2f kts head wind, %5.2f kts cross wind\n",
+                    Auxiliary->GetHeadWind()*fpstokts,
+                    Auxiliary->GetCrossWind()*fpstokts );
+  cout << out;
+
+  snprintf(out,80, "    Ground Speed: %4.0f knots , Ground Track: %3.0f deg true\n",
+                    Auxiliary->GetVground()*fpstokts,
+                    Auxiliary->GetGroundTrack()*radtodeg );
+  cout << out;
+#endif
+#endif
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-FGColumnVector FGState::CalcEuler(void) {
-  static FGColumnVector vEuler(3);
-
-  if (mTl2b(3,3) == 0.0) mTl2b(3,3) = 0.0000001;
-  if (mTl2b(1,1) == 0.0) mTl2b(1,1) = 0.0000001;
-
-  vEuler(ePhi) = atan2(mTl2b(2,3), mTl2b(3,3));
-  vEuler(eTht) = asin(-mTl2b(1,3));
-  vEuler(ePsi) = atan2(mTl2b(1,2), mTl2b(1,1));
-
-  if (vEuler(ePsi) < 0.0) vEuler(ePsi) += 2*M_PI;
-
-  return vEuler;
+void FGState::bind(void)
+{
+  PropertyManager->Tie("sim-time-sec",this,
+                        &FGState::Getsim_time);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-FGMatrix FGState::GetTs2b(float alpha, float beta) {
-  float ca, cb, sa, sb;
-
-  ca = cos(alpha);
-  sa = sin(alpha);
-  cb = cos(beta);
-  sb = sin(beta);
-
-  mTs2b(1,1) = -ca*cb;
-  mTs2b(1,2) = -ca*sb;
-  mTs2b(1,3) = sa;
-  mTs2b(2,1) = -sb;
-  mTs2b(2,2) = cb;
-  mTs2b(2,3) = 0.0;
-  mTs2b(3,1) = -sa*cb;
-  mTs2b(3,2) = -sa*sb;
-  mTs2b(3,3) = -ca;
-
-  return mTs2b;
+void FGState::unbind(void)
+{
+  PropertyManager->Untie("sim-time-sec");
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+//    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 FGState::Debug(int from)
+{
+  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: FGState" << endl;
+    if (from == 1) cout << "Destroyed:    FGState" << 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;
+    }
+  }
+}
+}