Module: FGPropulsion.cpp
Author: Jon S. Berndt
Date started: 08/20/00
- Purpose: Encapsulates the set of engines, tanks, and thrusters associated
+ Purpose: Encapsulates the set of engines and tanks associated
with this aircraft
------------- Copyright (C) 2000 Jon S. Berndt (jsb@hal-pc.org) -------------
FUNCTIONAL DESCRIPTION
--------------------------------------------------------------------------------
The Propulsion class is the container for the entire propulsion system, which is
-comprised of engines, tanks, and "thrusters" (the device that transforms the
-engine power into a force that acts on the aircraft, such as a nozzle or
-propeller). Once the Propulsion class gets the config file, it reads in
-information which is specific to a type of engine. Then:
+comprised of engines and tanks. Once the Propulsion class gets the config file,
+it reads in information which is specific to a type of engine. Then:
1) The appropriate engine type instance is created
-2) A thruster object is instantiated, and is linked to the engine
-3) At least one tank object is created, and is linked to an engine.
+2) At least one tank object is created, and is linked to an engine.
-At Run time each engines Calculate() method is called to return the excess power
-generated during that iteration. The drag from the previous iteration is sub-
-tracted to give the excess power available for thrust this pass. That quantity
-is passed to the thrusters associated with a particular engine - perhaps with a
-scaling mechanism (gearing?) to allow the engine to give its associated thrust-
-ers specific distributed portions of the excess power.
+At Run time each engines Calculate() method is called.
HISTORY
--------------------------------------------------------------------------------
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
#include "FGPropulsion.h"
+#include "FGRocket.h"
+#include "FGTurbine.h"
+#include "FGPiston.h"
+#include "FGElectric.h"
#include "FGPropertyManager.h"
+#include <sstream>
+namespace JSBSim {
static const char *IdSrc = "$Id$";
static const char *IdHdr = ID_PROPULSION;
extern short debug_lvl;
-#if defined (__APPLE__)
-/* Not all systems have the gcvt function */
-inline char* gcvt (double value, int ndigits, char *buf) {
- /* note that this is not exactly what gcvt is supposed to do! */
- snprintf (buf, ndigits+1, "%f", value);
- return buf;
-}
-#endif
-
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS IMPLEMENTATION
FGPropulsion::FGPropulsion(FGFDMExec* exec) : FGModel(exec)
{
Name = "FGPropulsion";
+
numSelectedFuelTanks = numSelectedOxiTanks = 0;
- numTanks = numEngines = numThrusters = 0;
+ numTanks = numEngines = 0;
numOxiTanks = numFuelTanks = 0;
- dt = 0.0;
ActiveEngine = -1; // -1: ALL, 0: Engine 1, 1: Engine 2 ...
+ tankJ.InitMatrix();
+ refuel = false;
+ fuel_freeze = false;
+
bind();
+
Debug(0);
}
bool FGPropulsion::Run(void)
{
- double PowerAvailable;
- dt = State->Getdt();
+ unsigned int i;
+
+ if (FGModel::Run()) return true;
+
+ double dt = State->Getdt();
vForces.InitMatrix();
vMoments.InitMatrix();
- if (!FGModel::Run()) {
- for (unsigned int i=0; i<numEngines; i++) {
- Thrusters[i]->SetdeltaT(dt*rate);
- PowerAvailable = Engines[i]->Calculate(Thrusters[i]->GetPowerRequired());
- Thrusters[i]->Calculate(PowerAvailable);
- vForces += Thrusters[i]->GetBodyForces(); // sum body frame forces
- vMoments += Thrusters[i]->GetMoments(); // sum body frame moments
- }
- return false;
- } else {
- return true;
+ for (i=0; i<numEngines; i++) {
+ Engines[i]->Calculate();
+ vForces += Engines[i]->GetBodyForces(); // sum body frame forces
+ vMoments += Engines[i]->GetMoments(); // sum body frame moments
+ }
+
+ for (i=0; i<numTanks; i++) {
+ Tanks[i]->Calculate( dt * rate );
}
+
+ if (refuel) DoRefuel( dt * rate );
+
+ return false;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
bool FGPropulsion::GetSteadyState(void)
{
- double PowerAvailable;
double currentThrust = 0, lastThrust=-1;
- dt = State->Getdt();
int steady_count,j=0;
bool steady=false;
if (!FGModel::Run()) {
for (unsigned int i=0; i<numEngines; i++) {
Engines[i]->SetTrimMode(true);
- Thrusters[i]->SetdeltaT(dt*rate);
steady=false;
steady_count=0;
while (!steady && j < 6000) {
- PowerAvailable = Engines[i]->Calculate(Thrusters[i]->GetPowerRequired());
+ Engines[i]->Calculate();
lastThrust = currentThrust;
- currentThrust = Thrusters[i]->Calculate(PowerAvailable);
+ currentThrust = Engines[i]->GetThrust();
if (fabs(lastThrust-currentThrust) < 0.0001) {
steady_count++;
if (steady_count > 120) { steady=true; }
} else {
steady_count=0;
}
- j++;
+ j++;
}
- vForces += Thrusters[i]->GetBodyForces(); // sum body frame forces
- vMoments += Thrusters[i]->GetMoments(); // sum body frame moments
+ vForces += Engines[i]->GetBodyForces(); // sum body frame forces
+ vMoments += Engines[i]->GetMoments(); // sum body frame moments
Engines[i]->SetTrimMode(false);
}
bool FGPropulsion::ICEngineStart(void)
{
- double PowerAvailable;
int j;
- dt = State->Getdt();
vForces.InitMatrix();
vMoments.InitMatrix();
-
+
for (unsigned int i=0; i<numEngines; i++) {
Engines[i]->SetTrimMode(true);
- Thrusters[i]->SetdeltaT(dt*rate);
j=0;
while (!Engines[i]->GetRunning() && j < 2000) {
- PowerAvailable = Engines[i]->Calculate(Thrusters[i]->GetPowerRequired());
- Thrusters[i]->Calculate(PowerAvailable);
- j++;
+ Engines[i]->Calculate();
+ j++;
}
- vForces += Thrusters[i]->GetBodyForces(); // sum body frame forces
- vMoments += Thrusters[i]->GetMoments(); // sum body frame moments
+ vForces += Engines[i]->GetBodyForces(); // sum body frame forces
+ vMoments += Engines[i]->GetMoments(); // sum body frame moments
Engines[i]->SetTrimMode(false);
}
return true;
bool FGPropulsion::Load(FGConfigFile* AC_cfg)
{
- string token, fullpath;
+ string token, fullpath, localpath;
string engineFileName, engType;
- string thrusterFileName, thrType;
string parameter;
string enginePath = FDMExec->GetEnginePath();
+ string aircraftPath = FDMExec->GetAircraftPath();
double xLoc, yLoc, zLoc, Pitch, Yaw;
- double P_Factor = 0, Sense = 0.0;
int Feed;
bool ThrottleAdded = false;
+ FGConfigFile* Cfg_ptr = 0;
# ifndef macintosh
fullpath = enginePath + "/";
+ localpath = aircraftPath + "/Engines/";
# else
fullpath = enginePath + ";";
+ localpath = aircraftPath + ";Engines;";
# endif
AC_cfg->GetNextConfigLine();
engineFileName = AC_cfg->GetValue("FILE");
- if (debug_lvl > 0) cout << "\n Reading engine from file: " << fullpath
- + engineFileName + ".xml"<< endl;
+ // Look in the Aircraft/Engines directory first
+ Cfg_ptr = 0;
+ FGConfigFile Local_cfg(localpath + engineFileName + ".xml");
FGConfigFile Eng_cfg(fullpath + engineFileName + ".xml");
+ if (Local_cfg.IsOpen()) {
+ Cfg_ptr = &Local_cfg;
+ if (debug_lvl > 0) cout << "\n Reading engine from file: " << localpath
+ + engineFileName + ".xml"<< endl;
+ } else {
+ if (Eng_cfg.IsOpen()) {
+ Cfg_ptr = &Eng_cfg;
+ if (debug_lvl > 0) cout << "\n Reading engine from file: " << fullpath
+ + engineFileName + ".xml"<< endl;
+ }
+ }
- if (Eng_cfg.IsOpen()) {
- Eng_cfg.GetNextConfigLine();
- engType = Eng_cfg.GetValue();
+ if (Cfg_ptr) {
+ Cfg_ptr->GetNextConfigLine();
+ engType = Cfg_ptr->GetValue();
FCS->AddThrottle();
ThrottleAdded = true;
if (engType == "FG_ROCKET") {
- Engines.push_back(new FGRocket(FDMExec, &Eng_cfg));
+ Engines.push_back(new FGRocket(FDMExec, Cfg_ptr, numEngines));
} else if (engType == "FG_PISTON") {
- Engines.push_back(new FGPiston(FDMExec, &Eng_cfg));
- } else if (engType == "FG_TURBOJET") {
- Engines.push_back(new FGTurboJet(FDMExec, &Eng_cfg));
- } else if (engType == "FG_TURBOSHAFT") {
- Engines.push_back(new FGTurboShaft(FDMExec, &Eng_cfg));
- } else if (engType == "FG_TURBOPROP") {
- Engines.push_back(new FGTurboProp(FDMExec, &Eng_cfg));
+ Engines.push_back(new FGPiston(FDMExec, Cfg_ptr, numEngines));
+ } else if (engType == "FG_TURBINE") {
+ Engines.push_back(new FGTurbine(FDMExec, Cfg_ptr, numEngines));
+ } else if (engType == "FG_SIMTURBINE") {
+ cerr << endl;
+ cerr << "The FG_SIMTURBINE engine type has been renamed to FG_TURBINE." << endl;
+ cerr << "To fix this problem, simply replace the FG_SIMTURBINE name " << endl;
+ cerr << "in your engine file to FG_TURBINE." << endl;
+ cerr << endl;
+ Engines.push_back(new FGTurbine(FDMExec, Cfg_ptr, numEngines));
+ } else if (engType == "FG_ELECTRIC") {
+ Engines.push_back(new FGElectric(FDMExec, Cfg_ptr, numEngines));
} else {
cerr << fgred << " Unrecognized engine type: " << underon << engType
<< underoff << " found in config file." << fgdef << endl;
else if (token == "YLOC") { *AC_cfg >> yLoc; }
else if (token == "ZLOC") { *AC_cfg >> zLoc; }
else if (token == "PITCH") { *AC_cfg >> Pitch;}
- else if (token == "YAW") { *AC_cfg >> Yaw;}
+ else if (token == "YAW") { *AC_cfg >> Yaw; }
+ else if (token.find("AC_THRUSTER") != string::npos) {
+ if (debug_lvl > 0) cout << "\n Reading thruster definition" << endl;
+ Engines.back()->LoadThruster(AC_cfg);
+ AC_cfg->GetNextConfigLine();
+ }
else if (token == "FEED") {
*AC_cfg >> Feed;
Engines[numEngines]->AddFeedTank(Feed);
}
Engines[numEngines]->SetPlacement(xLoc, yLoc, zLoc, Pitch, Yaw);
- Engines[numEngines]->SetEngineNumber(numEngines);
numEngines++;
} else {
cerr << fgred << "\n Could not read engine config file: " << underon <<
- fullpath + engineFileName + ".xml" << underoff << fgdef << endl;
+ engineFileName + ".xml" << underoff << fgdef << endl;
return false;
}
} else if (token == "AC_TANK") { // ============== READING TANKS
if (debug_lvl > 0) cout << "\n Reading tank definition" << endl;
- Tanks.push_back(new FGTank(AC_cfg));
+ Tanks.push_back(new FGTank(AC_cfg, FDMExec));
switch(Tanks[numTanks]->GetType()) {
case FGTank::ttFUEL:
numSelectedFuelTanks++;
}
numTanks++;
-
- } else if (token == "AC_THRUSTER") { // ========== READING THRUSTERS
-
- thrusterFileName = AC_cfg->GetValue("FILE");
-
- if (debug_lvl > 0) cout << "\n Reading thruster from file: " <<
- fullpath + thrusterFileName + ".xml" << endl;
- FGConfigFile Thruster_cfg(fullpath + thrusterFileName + ".xml");
-
- if (Thruster_cfg.IsOpen()) {
- Thruster_cfg.GetNextConfigLine();
- thrType = Thruster_cfg.GetValue();
-
- if (thrType == "FG_PROPELLER") {
- Thrusters.push_back(new FGPropeller(FDMExec, &Thruster_cfg));
- } else if (thrType == "FG_NOZZLE") {
- Thrusters.push_back(new FGNozzle(FDMExec, &Thruster_cfg));
- }
-
- AC_cfg->GetNextConfigLine();
- while ((token = AC_cfg->GetValue()) != string("/AC_THRUSTER")) {
- *AC_cfg >> token;
- if (token == "XLOC") *AC_cfg >> xLoc;
- else if (token == "YLOC") *AC_cfg >> yLoc;
- else if (token == "ZLOC") *AC_cfg >> zLoc;
- else if (token == "PITCH") *AC_cfg >> Pitch;
- else if (token == "YAW") *AC_cfg >> Yaw;
- else if (token == "P_FACTOR") *AC_cfg >> P_Factor;
- else if (token == "SENSE") *AC_cfg >> Sense;
- else cerr << "Unknown identifier: " << token << " in engine file: "
- << engineFileName << endl;
- }
-
- Thrusters[numThrusters]->SetLocation(xLoc, yLoc, zLoc);
- Thrusters[numThrusters]->SetAnglesToBody(0, Pitch, Yaw);
- if (thrType == "FG_PROPELLER" && P_Factor > 0.001) {
- ((FGPropeller*)Thrusters[numThrusters])->SetPFactor(P_Factor);
- if (debug_lvl > 0) cout << " P-Factor: " << P_Factor << endl;
- ((FGPropeller*)Thrusters[numThrusters])->SetSense(fabs(Sense)/Sense);
- if (debug_lvl > 0) cout << " Sense: " << Sense << endl;
- }
- Thrusters[numThrusters]->SetdeltaT(dt*rate);
- Thrusters[numThrusters]->SetThrusterNumber(numThrusters);
- numThrusters++;
-
- } else {
- cerr << "Could not read thruster config file: " << fullpath
- + thrusterFileName + ".xml" << endl;
- return false;
- }
-
}
AC_cfg->GetNextConfigLine();
}
+ CalculateTankInertias();
if (!ThrottleAdded) FCS->AddThrottle(); // need to have at least one throttle
return true;
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-string FGPropulsion::GetPropulsionStrings(void)
+string FGPropulsion::GetPropulsionStrings(string delimeter)
{
+ unsigned int i;
+
string PropulsionStrings = "";
bool firstime = true;
- char buffer[5];
+ stringstream buf;
- for (unsigned int i=0;i<Engines.size();i++) {
+ for (i=0; i<Engines.size(); i++) {
if (firstime) firstime = false;
- else PropulsionStrings += ", ";
-
- sprintf(buffer, "%d", i);
-
- switch(Engines[i]->GetType()) {
- case FGEngine::etPiston:
- PropulsionStrings += (Engines[i]->GetName() + "_PwrAvail[" + buffer + "]");
- break;
- case FGEngine::etRocket:
- PropulsionStrings += (Engines[i]->GetName() + "_ChamberPress[" + buffer + "]");
- break;
- case FGEngine::etTurboJet:
- case FGEngine::etTurboProp:
- case FGEngine::etTurboShaft:
- break;
- default:
- PropulsionStrings += "INVALID ENGINE TYPE";
- break;
- }
+ else PropulsionStrings += delimeter;
- PropulsionStrings += ", ";
-
- FGPropeller* Propeller = (FGPropeller*)Thrusters[i];
- switch(Thrusters[i]->GetType()) {
- case FGThruster::ttNozzle:
- PropulsionStrings += (Thrusters[i]->GetName() + "_Thrust[" + buffer + "]");
- break;
- case FGThruster::ttRotor:
- break;
- case FGThruster::ttPropeller:
- PropulsionStrings += (Thrusters[i]->GetName() + "_Torque[" + buffer + "], ");
- PropulsionStrings += (Thrusters[i]->GetName() + "_PFactor_Roll[" + buffer + "], ");
- PropulsionStrings += (Thrusters[i]->GetName() + "_PFactor_Pitch[" + buffer + "], ");
- PropulsionStrings += (Thrusters[i]->GetName() + "_PFactor_Yaw[" + buffer + "], ");
- PropulsionStrings += (Thrusters[i]->GetName() + "_Thrust[" + buffer + "], ");
- if (Propeller->IsVPitch())
- PropulsionStrings += (Thrusters[i]->GetName() + "_Pitch[" + buffer + "], ");
- PropulsionStrings += (Thrusters[i]->GetName() + "_RPM[" + buffer + "]");
- break;
- default:
- PropulsionStrings += "INVALID THRUSTER TYPE";
- break;
- }
+ PropulsionStrings += Engines[i]->GetEngineLabels(delimeter);
+ }
+ for (i=0; i<Tanks.size(); i++) {
+ if (Tanks[i]->GetType() == FGTank::ttFUEL) buf << delimeter << "Fuel Tank " << i;
+ else if (Tanks[i]->GetType() == FGTank::ttOXIDIZER) buf << delimeter << "Oxidizer Tank " << i;
}
return PropulsionStrings;
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-string FGPropulsion::GetPropulsionValues(void)
+string FGPropulsion::GetPropulsionValues(string delimeter)
{
- char buff[20];
+ unsigned int i;
+
string PropulsionValues = "";
bool firstime = true;
+ stringstream buf;
- for (unsigned int i=0;i<Engines.size();i++) {
+ for (i=0; i<Engines.size(); i++) {
if (firstime) firstime = false;
- else PropulsionValues += ", ";
-
- switch(Engines[i]->GetType()) {
- case FGEngine::etPiston:
- PropulsionValues += (string(gcvt(((FGPiston*)Engines[i])->GetPowerAvailable(), 10, buff)));
- break;
- case FGEngine::etRocket:
- PropulsionValues += (string(gcvt(((FGRocket*)Engines[i])->GetChamberPressure(), 10, buff)));
- break;
- case FGEngine::etTurboJet:
- case FGEngine::etTurboProp:
- case FGEngine::etTurboShaft:
- break;
- }
+ else PropulsionValues += delimeter;
- PropulsionValues += ", ";
-
- switch(Thrusters[i]->GetType()) {
- case FGThruster::ttNozzle:
- PropulsionValues += (string(gcvt(((FGNozzle*)Thrusters[i])->GetThrust(), 10, buff)));
- break;
- case FGThruster::ttRotor:
- break;
- case FGThruster::ttPropeller:
- FGPropeller* Propeller = (FGPropeller*)Thrusters[i];
- FGColumnVector3 vPFactor = Propeller->GetPFactor();
- PropulsionValues += string(gcvt(Propeller->GetTorque(), 10, buff)) + ", ";
- PropulsionValues += string(gcvt(vPFactor(eRoll), 10, buff)) + ", ";
- PropulsionValues += string(gcvt(vPFactor(ePitch), 10, buff)) + ", ";
- PropulsionValues += string(gcvt(vPFactor(eYaw), 10, buff)) + ", ";
- PropulsionValues += string(gcvt(Propeller->GetThrust(), 10, buff)) + ", ";
- if (Propeller->IsVPitch())
- PropulsionValues += string(gcvt(Propeller->GetPitch(), 10, buff)) + ", ";
- PropulsionValues += string(gcvt(Propeller->GetRPM(), 10, buff));
- break;
- }
+ PropulsionValues += Engines[i]->GetEngineValues(delimeter);
+ }
+ for (i=0; i<Tanks.size(); i++) {
+ buf << delimeter;
+ buf << Tanks[i]->GetContents();
}
return PropulsionValues;
FGColumnVector3& FGPropulsion::GetTanksMoment(void)
{
iTank = Tanks.begin();
- vXYZtank.InitMatrix();
+ vXYZtank_arm.InitMatrix();
while (iTank < Tanks.end()) {
- vXYZtank(eX) += (*iTank)->GetX()*(*iTank)->GetContents();
- vXYZtank(eY) += (*iTank)->GetY()*(*iTank)->GetContents();
- vXYZtank(eZ) += (*iTank)->GetZ()*(*iTank)->GetContents();
+ vXYZtank_arm(eX) += (*iTank)->GetXYZ(eX)*(*iTank)->GetContents();
+ vXYZtank_arm(eY) += (*iTank)->GetXYZ(eY)*(*iTank)->GetContents();
+ vXYZtank_arm(eZ) += (*iTank)->GetXYZ(eZ)*(*iTank)->GetContents();
iTank++;
}
- return vXYZtank;
+ return vXYZtank_arm;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGPropulsion::GetTanksIxx(const FGColumnVector3& vXYZcg)
+FGMatrix33& FGPropulsion::CalculateTankInertias(void)
{
- double I = 0.0;
- iTank = Tanks.begin();
- while (iTank < Tanks.end()) {
- I += ((*iTank)->GetX() - vXYZcg(eX))*((*iTank)->GetX() - vXYZcg(eX)) * (*iTank)->GetContents()/(144.0*Inertial->gravity());
- iTank++;
- }
- return I;
+ unsigned int size;
+
+ size = Tanks.size();
+ if (size == 0) return tankJ;
+
+ tankJ = FGMatrix33();
+
+ for (unsigned int i=0; i<size; i++)
+ tankJ += MassBalance->GetPointmassInertia( lbtoslug * Tanks[i]->GetContents(),
+ Tanks[i]->GetXYZ() );
+
+ return tankJ;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGPropulsion::GetTanksIyy(const FGColumnVector3& vXYZcg)
+void FGPropulsion::SetMagnetos(int setting)
{
- double I = 0.0;
- iTank = Tanks.begin();
- while (iTank < Tanks.end()) {
- I += ((*iTank)->GetY() - vXYZcg(eY))*((*iTank)->GetY() - vXYZcg(eY)) * (*iTank)->GetContents()/(144.0*Inertial->gravity());
- iTank++;
+ if (ActiveEngine < 0) {
+ for (unsigned i=0; i<Engines.size(); i++) {
+ ((FGPiston*)Engines[i])->SetMagnetos(setting);
+ }
+ } else {
+ ((FGPiston*)Engines[ActiveEngine])->SetMagnetos(setting);
}
- return I;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGPropulsion::GetTanksIzz(const FGColumnVector3& vXYZcg)
+void FGPropulsion::SetStarter(int setting)
{
- double I = 0.0;
- iTank = Tanks.begin();
- while (iTank < Tanks.end()) {
- I += ((*iTank)->GetZ() - vXYZcg(eZ))*((*iTank)->GetZ() - vXYZcg(eZ)) * (*iTank)->GetContents()/(144.0*Inertial->gravity());
- iTank++;
+ if (ActiveEngine < 0) {
+ for (unsigned i=0; i<Engines.size(); i++) {
+ if (setting == 0)
+ Engines[i]->SetStarter(false);
+ else
+ Engines[i]->SetStarter(true);
+ }
+ } else {
+ if (setting == 0)
+ Engines[ActiveEngine]->SetStarter(false);
+ else
+ Engines[ActiveEngine]->SetStarter(true);
}
- return I;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGPropulsion::GetTanksIxz(const FGColumnVector3& vXYZcg)
+void FGPropulsion::SetCutoff(int setting)
{
- double I = 0.0;
- iTank = Tanks.begin();
- while (iTank < Tanks.end()) {
- I += ((*iTank)->GetX() - vXYZcg(eX))*((*iTank)->GetZ() - vXYZcg(eZ)) * (*iTank)->GetContents()/(144.0*Inertial->gravity());
- iTank++;
+ if (ActiveEngine < 0) {
+ for (unsigned i=0; i<Engines.size(); i++) {
+ if (setting == 0)
+ ((FGTurbine*)Engines[i])->SetCutoff(false);
+ else
+ ((FGTurbine*)Engines[i])->SetCutoff(true);
+ }
+ } else {
+ if (setting == 0)
+ ((FGTurbine*)Engines[ActiveEngine])->SetCutoff(false);
+ else
+ ((FGTurbine*)Engines[ActiveEngine])->SetCutoff(true);
}
- return I;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGPropulsion::GetTanksIxy(const FGColumnVector3& vXYZcg)
+void FGPropulsion::SetActiveEngine(int engine)
{
- double I = 0.0;
- iTank = Tanks.begin();
- while (iTank != Tanks.end()) {
- I += ((*iTank)->GetX() - vXYZcg(eX))*((*iTank)->GetY() - vXYZcg(eY)) * (*iTank)->GetContents()/(144.0*Inertial->gravity());
- iTank++;
- }
- return I;
+ if (engine >= Engines.size() || engine < 0)
+ ActiveEngine = -1;
+ else
+ ActiveEngine = engine;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGPropulsion::SetMagnetos(int setting)
+double FGPropulsion::Transfer(int source, int target, double amount)
{
- if (ActiveEngine == -1) {
- for (unsigned i=0; i<Engines.size(); i++) {
- Engines[i]->SetMagnetos(setting);
- }
+ double shortage, overage;
+
+ if (source == -1) {
+ shortage = 0.0;
+ } else {
+ shortage = Tanks[source]->Drain(amount);
+ }
+ if (target == -1) {
+ overage = 0.0;
} else {
- Engines[ActiveEngine]->SetMagnetos(setting);
+ overage = Tanks[target]->Fill(amount - shortage);
}
+ return overage;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGPropulsion::SetStarter(int setting)
+void FGPropulsion::DoRefuel(double time_slice)
{
- if (ActiveEngine == -1) {
- for (unsigned i=0; i<Engines.size(); i++) {
- Engines[i]->SetStarter(setting);
+ double fillrate = 100 * time_slice; // 100 lbs/sec = 6000 lbs/min
+ int TanksNotFull = 0;
+
+ for (unsigned int i=0; i<numTanks; i++) {
+ if (Tanks[i]->GetPctFull() < 99.99) ++TanksNotFull;
+ }
+
+ if (TanksNotFull) {
+ for (unsigned int i=0; i<numTanks; i++) {
+ if (Tanks[i]->GetPctFull() < 99.99)
+ Transfer(-1, i, fillrate/TanksNotFull);
}
- } else {
- if (setting == 0)
- Engines[ActiveEngine]->SetStarter(false);
- else
- Engines[ActiveEngine]->SetStarter(true);
}
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGPropulsion::SetActiveEngine(int engine)
+void FGPropulsion::SetFuelFreeze(bool f)
{
- if ( unsigned(engine) > Engines.size())
- ActiveEngine = -1;
- else
- ActiveEngine = engine;
-}
-
+ fuel_freeze = f;
+ for (unsigned int i=0; i<numEngines; i++) {
+ Engines[i]->SetFuelFreeze(f);
+ }
+}
+
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void FGPropulsion::bind(void)
{
typedef double (FGPropulsion::*PMF)(int) const;
typedef int (FGPropulsion::*iPMF)(void) const;
- /* PropertyManager->Tie("propulsion/num-engines", this,
- &FGPropulsion::GetNumEngines);
- PropertyManager->Tie("propulsion/num-tanks", this,
- &FGPropulsion::GetNumTanks); */
PropertyManager->Tie("propulsion/magneto_cmd", this,
- (iPMF)0,
- &FGPropulsion::SetMagnetos,
- true);
+ (iPMF)0, &FGPropulsion::SetMagnetos, true);
PropertyManager->Tie("propulsion/starter_cmd", this,
- (iPMF)0,
- &FGPropulsion::SetStarter,
- true);
- PropertyManager->Tie("propulsion/active_engine", this,
- (iPMF)0,
- &FGPropulsion::SetActiveEngine,
- true);
-
- PropertyManager->Tie("propulsion/num-sel-fuel-tanks", this,
- &FGPropulsion::GetnumSelectedFuelTanks);
- PropertyManager->Tie("propulsion/num-sel-ox-tanks", this,
- &FGPropulsion::GetnumSelectedOxiTanks);
+ (iPMF)0, &FGPropulsion::SetStarter, true);
+ PropertyManager->Tie("propulsion/cutoff_cmd", this,
+ (iPMF)0, &FGPropulsion::SetCutoff, true);
+
PropertyManager->Tie("forces/fbx-prop-lbs", this,1,
(PMF)&FGPropulsion::GetForces);
PropertyManager->Tie("forces/fby-prop-lbs", this,2,
(PMF)&FGPropulsion::GetMoments);
PropertyManager->Tie("moments/n-prop-lbsft", this,3,
(PMF)&FGPropulsion::GetMoments);
- //PropertyManager->Tie("propulsion/tanks-weight-lbs", this,
- // &FGPropulsion::GetTanksWeight);
+
+ PropertyManager->Tie("propulsion/active_engine", this,
+ (iPMF)&FGPropulsion::GetActiveEngine, &FGPropulsion::SetActiveEngine, true);
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void FGPropulsion::unbind(void)
{
- /* PropertyManager->Untie("propulsion/num-engines");
- PropertyManager->Untie("propulsion/num-tanks"); */
- PropertyManager->Untie("propulsion/num-sel-fuel-tanks");
- PropertyManager->Untie("propulsion/num-sel-ox-tanks");
PropertyManager->Untie("propulsion/magneto_cmd");
PropertyManager->Untie("propulsion/starter_cmd");
+ PropertyManager->Untie("propulsion/cutoff_cmd");
PropertyManager->Untie("propulsion/active_engine");
PropertyManager->Untie("forces/fbx-prop-lbs");
PropertyManager->Untie("forces/fby-prop-lbs");
PropertyManager->Untie("moments/l-prop-lbsft");
PropertyManager->Untie("moments/m-prop-lbsft");
PropertyManager->Untie("moments/n-prop-lbsft");
- //PropertyManager->Untie("propulsion/tanks-weight-lbs");
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
}
}
}
-
+}
projects / flightgear.git / blobdiff