From: Erik Hofman Date: Mon, 11 Jan 2016 10:39:11 +0000 (+0100) Subject: Sync. again X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=508c367c5b21b9ef96b8d89174c43fb484026c93;p=flightgear.git Sync. again --- diff --git a/src/FDM/JSBSim/FGFDMExec.cpp b/src/FDM/JSBSim/FGFDMExec.cpp index 928595695..14a9b2f4f 100644 --- a/src/FDM/JSBSim/FGFDMExec.cpp +++ b/src/FDM/JSBSim/FGFDMExec.cpp @@ -72,7 +72,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGFDMExec.cpp,v 1.185 2015/12/13 08:01:50 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGFDMExec.cpp,v 1.186 2016/01/10 16:32:26 bcoconni Exp $"); IDENT(IdHdr,ID_FDMEXEC); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -399,7 +399,6 @@ void FGFDMExec::LoadInputs(unsigned int idx) Auxiliary->in.TurbPQR = Winds->GetTurbPQR(); Auxiliary->in.WindPsi = Winds->GetWindPsi(); Auxiliary->in.Vwind = Winds->GetTotalWindNED().Magnitude(); - Auxiliary->in.PitotAngle = Aircraft->GetPitotAngle(); break; case eSystems: // Dynamic inputs come into the components that FCS manages through properties @@ -542,6 +541,7 @@ void FGFDMExec::LoadModelConstants(void) Aerodynamics->in.Wingspan = Aircraft->GetWingSpan(); Auxiliary->in.Wingspan = Aircraft->GetWingSpan(); Auxiliary->in.Wingchord = Aircraft->Getcbar(); + Auxiliary->in.PitotAngle = Aircraft->GetPitotAngle(); GroundReactions->in.vXYZcg = MassBalance->GetXYZcg(); LoadPlanetConstants(); diff --git a/src/FDM/JSBSim/FGJSBBase.cpp b/src/FDM/JSBSim/FGJSBBase.cpp index d978da9cd..8a8fbc82f 100644 --- a/src/FDM/JSBSim/FGJSBBase.cpp +++ b/src/FDM/JSBSim/FGJSBBase.cpp @@ -46,7 +46,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGJSBBase.cpp,v 1.40 2015/07/12 19:34:08 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGJSBBase.cpp,v 1.41 2016/01/10 12:07:49 bcoconni Exp $"); IDENT(IdHdr,ID_JSBBASE); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -84,8 +84,8 @@ const double FGJSBBase::degtorad = 0.017453292519943295769236907684886; const double FGJSBBase::hptoftlbssec = 550.0; const double FGJSBBase::psftoinhg = 0.014138; const double FGJSBBase::psftopa = 47.88; -const double FGJSBBase::fpstokts = 0.592484; const double FGJSBBase::ktstofps = 1.68781; +const double FGJSBBase::fpstokts = 1.0/ktstofps; const double FGJSBBase::inchtoft = 0.08333333; const double FGJSBBase::in3tom3 = 1.638706E-5; const double FGJSBBase::m3toft3 = 1.0/(fttom*fttom*fttom); @@ -275,13 +275,11 @@ double FGJSBBase::GaussianRandomNumber(void) //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -double FGJSBBase::VcalibratedFromMach(double mach, double p, double psl, double rhosl) +double FGJSBBase::PitotTotalPressure(double mach, double p) { - double pt,A; - - if (mach < 0) mach=0; + if (mach < 0) return 0; if (mach < 1) //calculate total pressure assuming isentropic flow - pt=p*pow((1 + 0.2*mach*mach),3.5); + return p*pow((1 + 0.2*mach*mach),3.5); else { // shock in front of pitot tube, we'll assume its normal and use // the Rayleigh Pitot Tube Formula, i.e. the ratio of total @@ -298,10 +296,17 @@ double FGJSBBase::VcalibratedFromMach(double mach, double p, double psl, double // The denominator below is zero for Mach ~ 0.38, for which // we'll never be here, so we're safe - pt = p*166.92158*pow(mach,7.0)/pow(7*mach*mach-1,2.5); + return p*166.92158*pow(mach,7.0)/pow(7*mach*mach-1,2.5); } +} + +//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +double FGJSBBase::VcalibratedFromMach(double mach, double p, double psl, double rhosl) +{ + double pt = PitotTotalPressure(mach, p); + double A = pow(((pt-p)/psl+1), 1./3.5); - A = pow(((pt-p)/psl+1),0.28571); return sqrt(7*psl/rhosl*(A-1)); } @@ -312,7 +317,7 @@ double FGJSBBase::MachFromVcalibrated(double vcas, double p, double psl, double double pt = p + psl*(pow(1+vcas*vcas*rhosl/(7.0*psl),3.5)-1); if (pt/p < 1.89293) - return sqrt(5.0*(pow(pt/p, 0.2857143) -1)); // Mach < 1 + return sqrt(5.0*(pow(pt/p, 1./3.5) -1)); // Mach < 1 else { // Mach >= 1 double mach = sqrt(0.77666*pt/p); // Initial guess is based on a quadratic approximation of the Rayleigh formula diff --git a/src/FDM/JSBSim/FGJSBBase.h b/src/FDM/JSBSim/FGJSBBase.h index b3a5cf21a..8fec460c4 100644 --- a/src/FDM/JSBSim/FGJSBBase.h +++ b/src/FDM/JSBSim/FGJSBBase.h @@ -54,7 +54,7 @@ INCLUDES DEFINITIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ -#define ID_JSBBASE "$Id: FGJSBBase.h,v 1.44 2015/09/17 19:44:13 bcoconni Exp $" +#define ID_JSBBASE "$Id: FGJSBBase.h,v 1.45 2016/01/10 12:07:49 bcoconni Exp $" /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FORWARD DECLARATIONS @@ -70,7 +70,7 @@ CLASS DOCUMENTATION * This class provides universal constants, utility functions, messaging * functions, and enumerated constants to JSBSim. @author Jon S. Berndt - @version $Id: FGJSBBase.h,v 1.44 2015/09/17 19:44:13 bcoconni Exp $ + @version $Id: FGJSBBase.h,v 1.45 2016/01/10 12:07:49 bcoconni Exp $ */ /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -261,6 +261,15 @@ public: return measure*0.3048; } + /** Compute the total pressure in front of the Pitot tube. It uses the + * Rayleigh formula for supersonic speeds (See "Introduction to Aerodynamics + * of a Compressible Fluid - H.W. Liepmann, A.E. Puckett - Wiley & sons + * (1947)" §5.4 pp 75-80) + * @param mach The Mach number + * @param p Pressure in psf + * @return The total pressure in front of the Pitot tube in psf */ + static double PitotTotalPressure(double mach, double p); + /** Calculate the calibrated airspeed from the Mach number. It uses the * Rayleigh formula for supersonic speeds (See "Introduction to Aerodynamics * of a Compressible Fluid - H.W. Liepmann, A.E. Puckett - Wiley & sons diff --git a/src/FDM/JSBSim/initialization/FGInitialCondition.cpp b/src/FDM/JSBSim/initialization/FGInitialCondition.cpp index d285dd2b7..262ef8ada 100644 --- a/src/FDM/JSBSim/initialization/FGInitialCondition.cpp +++ b/src/FDM/JSBSim/initialization/FGInitialCondition.cpp @@ -50,6 +50,7 @@ INCLUDES #include "FGFDMExec.h" #include "models/FGInertial.h" #include "models/FGAtmosphere.h" +#include "models/FGAircraft.h" #include "models/FGAccelerations.h" #include "input_output/FGXMLFileRead.h" @@ -57,7 +58,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGInitialCondition.cpp,v 1.102 2015/12/13 08:16:00 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGInitialCondition.cpp,v 1.104 2016/01/10 16:35:28 bcoconni Exp $"); IDENT(IdHdr,ID_INITIALCONDITION); //****************************************************************************** @@ -68,6 +69,7 @@ FGInitialCondition::FGInitialCondition(FGFDMExec *FDMExec) : fdmex(FDMExec) if(FDMExec != NULL ) { Atmosphere=fdmex->GetAtmosphere(); + Aircraft=fdmex->GetAircraft(); } else { cout << "FGInitialCondition: This class requires a pointer to a valid FGFDMExec object" << endl; } @@ -161,8 +163,7 @@ void FGInitialCondition::SetVequivalentKtsIC(double ve) void FGInitialCondition::SetMachIC(double mach) { double altitudeASL = position.GetAltitudeASL(); - double temperature = Atmosphere->GetTemperature(altitudeASL); - double soundSpeed = sqrt(SHRatio*Reng*temperature); + double soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); SetVtrueFpsIC(mach*soundSpeed); lastSpeedSet = setmach; } @@ -176,10 +177,10 @@ void FGInitialCondition::SetVcalibratedKtsIC(double vcas) double pressureSL = Atmosphere->GetPressureSL(); double rhoSL = Atmosphere->GetDensitySL(); double mach = MachFromVcalibrated(fabs(vcas)*ktstofps, pressure, pressureSL, rhoSL); - double temperature = Atmosphere->GetTemperature(altitudeASL); - double soundSpeed = sqrt(SHRatio*Reng*temperature); + double soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); + double PitotAngle = Aircraft->GetPitotAngle(); - SetVtrueFpsIC(mach*soundSpeed); + SetVtrueFpsIC(mach * soundSpeed / (cos(alpha+PitotAngle) * cos(beta))); lastSpeedSet = setvc; } @@ -206,8 +207,8 @@ void FGInitialCondition::calcAeroAngles(const FGColumnVector3& _vt_NED) alpha = atan2( wa, ua ); // alpha cannot be constrained without updating other informations like the - // true speed or the Euler angles. Otherwise we might end up with an inconsistent - // state of the aircraft. + // true speed or the Euler angles. Otherwise we might end up with an + // inconsistent state of the aircraft. /*alpha = Constrain(fdmex->GetAerodynamics()->GetAlphaCLMin(), alpha, fdmex->GetAerodynamics()->GetAlphaCLMax());*/ @@ -686,10 +687,9 @@ void FGInitialCondition::SetAltitudeAGLFtIC(double agl) void FGInitialCondition::SetAltitudeASLFtIC(double alt) { double altitudeASL = position.GetAltitudeASL(); - double temperature = Atmosphere->GetTemperature(altitudeASL); double pressure = Atmosphere->GetPressure(altitudeASL); double pressureSL = Atmosphere->GetPressureSL(); - double soundSpeed = sqrt(SHRatio*Reng*temperature); + double soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); double rho = Atmosphere->GetDensity(altitudeASL); double rhoSL = Atmosphere->GetDensitySL(); @@ -700,8 +700,7 @@ void FGInitialCondition::SetAltitudeASLFtIC(double alt) altitudeASL=alt; position.SetAltitudeASL(alt); - temperature = Atmosphere->GetTemperature(altitudeASL); - soundSpeed = sqrt(SHRatio*Reng*temperature); + soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); rho = Atmosphere->GetDensity(altitudeASL); pressure = Atmosphere->GetPressure(altitudeASL); @@ -813,12 +812,13 @@ double FGInitialCondition::GetBodyWindFpsIC(int idx) const double FGInitialCondition::GetVcalibratedKtsIC(void) const { double altitudeASL = position.GetAltitudeASL(); - double temperature = Atmosphere->GetTemperature(altitudeASL); double pressure = Atmosphere->GetPressure(altitudeASL); double pressureSL = Atmosphere->GetPressureSL(); double rhoSL = Atmosphere->GetDensitySL(); - double soundSpeed = sqrt(SHRatio*Reng*temperature); - double mach = vt / soundSpeed; + double soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); + double PitotAngle = Aircraft->GetPitotAngle(); + double mach = vt * cos(alpha+PitotAngle) * cos(beta) / soundSpeed; + return fpstokts * VcalibratedFromMach(mach, pressure, pressureSL, rhoSL); } @@ -837,8 +837,7 @@ double FGInitialCondition::GetVequivalentKtsIC(void) const double FGInitialCondition::GetMachIC(void) const { double altitudeASL = position.GetAltitudeASL(); - double temperature = Atmosphere->GetTemperature(altitudeASL); - double soundSpeed = sqrt(SHRatio*Reng*temperature); + double soundSpeed = Atmosphere->GetSoundSpeed(altitudeASL); return vt / soundSpeed; } diff --git a/src/FDM/JSBSim/initialization/FGInitialCondition.h b/src/FDM/JSBSim/initialization/FGInitialCondition.h index 1a11bf5d2..488d37add 100644 --- a/src/FDM/JSBSim/initialization/FGInitialCondition.h +++ b/src/FDM/JSBSim/initialization/FGInitialCondition.h @@ -54,7 +54,7 @@ INCLUDES DEFINITIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ -#define ID_INITIALCONDITION "$Id: FGInitialCondition.h,v 1.43 2015/03/28 14:49:01 bcoconni Exp $" +#define ID_INITIALCONDITION "$Id: FGInitialCondition.h,v 1.44 2016/01/10 16:35:28 bcoconni Exp $" /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FORWARD DECLARATIONS @@ -66,6 +66,7 @@ class FGFDMExec; class FGMatrix33; class FGColumnVector3; class FGAtmosphere; +class FGAircraft; class FGPropertyManager; class Element; @@ -218,7 +219,7 @@ CLASS DOCUMENTATION @property ic/r-rad_sec (read/write) Yaw rate initial condition in radians/second @author Tony Peden - @version "$Id: FGInitialCondition.h,v 1.43 2015/03/28 14:49:01 bcoconni Exp $" + @version "$Id: FGInitialCondition.h,v 1.44 2016/01/10 16:35:28 bcoconni Exp $" */ /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -684,6 +685,7 @@ private: FGFDMExec *fdmex; FGAtmosphere* Atmosphere; + FGAircraft* Aircraft; bool Load_v1(Element* document); bool Load_v2(Element* document); @@ -701,4 +703,3 @@ private: }; } #endif - diff --git a/src/FDM/JSBSim/input_output/FGXMLElement.cpp b/src/FDM/JSBSim/input_output/FGXMLElement.cpp old mode 100644 new mode 100755 index 1aebb93e4..ac9fb7094 --- a/src/FDM/JSBSim/input_output/FGXMLElement.cpp +++ b/src/FDM/JSBSim/input_output/FGXMLElement.cpp @@ -45,7 +45,7 @@ FORWARD DECLARATIONS namespace JSBSim { -IDENT(IdSrc,"$Id: FGXMLElement.cpp,v 1.54 2015/09/27 15:39:45 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGXMLElement.cpp,v 1.55 2016/01/02 15:23:50 bcoconni Exp $"); IDENT(IdHdr,ID_XMLELEMENT); bool Element::converterIsInitialized = false; @@ -698,7 +698,7 @@ void Element::MergeAttributes(Element* el) if (attributes.find(it->first) == attributes.end()) attributes[it->first] = it->second; else { - if (FGJSBBase::debug_lvl > 0) + if (FGJSBBase::debug_lvl > 0 && (attributes[it->first] != it->second)) cout << el->ReadFrom() << " Attribute '" << it->first << "' is overridden in file " << GetFileName() << ": line " << GetLineNumber() << endl << " The value '" << attributes[it->first] << "' will be used instead of '" diff --git a/src/FDM/JSBSim/models/FGAtmosphere.cpp b/src/FDM/JSBSim/models/FGAtmosphere.cpp index d3576d115..672c0f93c 100644 --- a/src/FDM/JSBSim/models/FGAtmosphere.cpp +++ b/src/FDM/JSBSim/models/FGAtmosphere.cpp @@ -50,7 +50,7 @@ INCLUDES namespace JSBSim { -IDENT(IdSrc,"$Id: FGAtmosphere.cpp,v 1.59 2014/05/07 19:51:43 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGAtmosphere.cpp,v 1.61 2016/01/10 19:22:12 bcoconni Exp $"); IDENT(IdHdr,ID_ATMOSPHERE); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -153,6 +153,13 @@ double FGAtmosphere::GetDensity(double altitude) const { return GetPressure(altitude)/(Reng * GetTemperature(altitude)); } +//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +// Get the sound speed at a specified altitude + +double FGAtmosphere::GetSoundSpeed(double altitude) const +{ + return sqrt(SHRatio * Reng * GetTemperature(altitude)); +} //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% // This function sets the sea level temperature. @@ -244,7 +251,7 @@ double FGAtmosphere::ConvertFromPSF(double p, ePressure unit) const void FGAtmosphere::bind(void) { -// typedef double (FGAtmosphere::*PMFi)(int) const; + typedef double (FGAtmosphere::*PMFi)(int) const; // typedef void (FGAtmosphere::*PMF)(int, double); PropertyManager->Tie("atmosphere/T-R", this, &FGAtmosphere::GetTemperature); PropertyManager->Tie("atmosphere/rho-slugs_ft3", this, &FGAtmosphere::GetDensity); @@ -252,8 +259,8 @@ void FGAtmosphere::bind(void) PropertyManager->Tie("atmosphere/a-fps", this, &FGAtmosphere::GetSoundSpeed); PropertyManager->Tie("atmosphere/T-sl-R", this, &FGAtmosphere::GetTemperatureSL); PropertyManager->Tie("atmosphere/rho-sl-slugs_ft3", this, &FGAtmosphere::GetDensitySL); -// PropertyManager->Tie("atmosphere/P-sl-psf", this, ePSF, -// (PMFi)&FGAtmosphere::GetPressureSL, + PropertyManager->Tie("atmosphere/P-sl-psf", this, ePSF, + (PMFi)&FGAtmosphere::GetPressureSL); // (PMF)&FGAtmosphere::SetPressureSL); PropertyManager->Tie("atmosphere/a-sl-fps", this, &FGAtmosphere::GetSoundSpeedSL); PropertyManager->Tie("atmosphere/theta", this, &FGAtmosphere::GetTemperatureRatio); diff --git a/src/FDM/JSBSim/models/FGAtmosphere.h b/src/FDM/JSBSim/models/FGAtmosphere.h index b1789a334..4a603bdc7 100644 --- a/src/FDM/JSBSim/models/FGAtmosphere.h +++ b/src/FDM/JSBSim/models/FGAtmosphere.h @@ -45,7 +45,7 @@ INCLUDES DEFINITIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ -#define ID_ATMOSPHERE "$Id: FGAtmosphere.h,v 1.31 2012/08/20 12:28:50 jberndt Exp $" +#define ID_ATMOSPHERE "$Id: FGAtmosphere.h,v 1.32 2016/01/10 15:56:30 bcoconni Exp $" /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FORWARD DECLARATIONS @@ -74,7 +74,7 @@ CLASS DOCUMENTATION @property atmosphere/a-ratio @author Jon Berndt - @version $Id: FGAtmosphere.h,v 1.31 2012/08/20 12:28:50 jberndt Exp $ + @version $Id: FGAtmosphere.h,v 1.32 2016/01/10 15:56:30 bcoconni Exp $ */ /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -190,6 +190,9 @@ public: /// Returns the speed of sound in ft/sec. virtual double GetSoundSpeed(void) const {return Soundspeed;} + /// Returns the speed of sound in ft/sec at a given altitude in ft. + virtual double GetSoundSpeed(double altitude) const; + /// Returns the sea level speed of sound in ft/sec. virtual double GetSoundSpeedSL(void) const { return SLsoundspeed; } diff --git a/src/FDM/JSBSim/models/FGAuxiliary.cpp b/src/FDM/JSBSim/models/FGAuxiliary.cpp old mode 100644 new mode 100755 index 3492deac4..3a51c046d --- a/src/FDM/JSBSim/models/FGAuxiliary.cpp +++ b/src/FDM/JSBSim/models/FGAuxiliary.cpp @@ -51,7 +51,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGAuxiliary.cpp,v 1.70 2015/09/20 20:53:13 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGAuxiliary.cpp,v 1.71 2016/01/10 12:12:59 bcoconni Exp $"); IDENT(IdHdr,ID_AUXILIARY); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -139,8 +139,6 @@ FGAuxiliary::~FGAuxiliary() bool FGAuxiliary::Run(bool Holding) { - double A,B,D; - if (FGModel::Run(Holding)) return true; // return true if error returned from base class if (Holding) return false; @@ -215,20 +213,10 @@ bool FGAuxiliary::Run(bool Holding) Vpitot = vPitotUVW(eU); if (Vpitot < 0.0) Vpitot = 0.0; MachPitot = Vpitot / in.SoundSpeed; - double MachP2 = MachPitot * MachPitot; - - if (MachPitot < 1) { // Calculate total pressure assuming isentropic flow - pt = in.Pressure*pow((1 + 0.2*MachP2),3.5); - } else { - // Use Rayleigh pitot tube formula for normal shock in front of pitot tube - B = 5.76 * MachP2 / (5.6*MachP2 - 0.8); - D = (2.8 * MachP2 - 0.4) * 0.4167; - pt = in.Pressure*pow(B,3.5)*D; - } + pt = PitotTotalPressure(MachPitot, in.Pressure); - A = pow(((pt-in.Pressure)/in.PressureSL + 1),0.28571); if (abs(MachPitot) > 0.0) { - vcas = sqrt(7 * in.PressureSL / in.DensitySL * (A-1)); + vcas = VcalibratedFromMach(MachPitot, in.Pressure, in.PressureSL, in.DensitySL); veas = sqrt(2 * qbar / in.DensitySL); vtrue = 1116.43559 * Mach * sqrt(in.Temperature / 518.67); } else { diff --git a/src/FDM/JSBSim/models/FGPropulsion.cpp b/src/FDM/JSBSim/models/FGPropulsion.cpp index 9cbce745c..31d3b7380 100644 --- a/src/FDM/JSBSim/models/FGPropulsion.cpp +++ b/src/FDM/JSBSim/models/FGPropulsion.cpp @@ -65,7 +65,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGPropulsion.cpp,v 1.84 2015/03/28 14:49:02 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGPropulsion.cpp,v 1.85 2016/01/02 17:42:53 bcoconni Exp $"); IDENT(IdHdr,ID_PROPULSION); extern short debug_lvl; @@ -281,12 +281,18 @@ bool FGPropulsion::GetSteadyState(void) int steady_count = 0, j = 0; bool steady = false; bool TrimMode = FDMExec->GetTrimStatus(); + bool suspended = FDMExec->IntegrationSuspended(); vForces.InitMatrix(); vMoments.InitMatrix(); if (!FGModel::Run(false)) { FDMExec->SetTrimStatus(true); + if (suspended) + FDMExec->ResumeIntegration(); + // This is a time marching algorithm so it needs a non-zero time step to + // reach a steady state. + in.TotalDeltaT = 0.5; for (unsigned int i=0; iSetTrimStatus(TrimMode); + if (suspended) { + FDMExec->SuspendIntegration(); + in.TotalDeltaT = 0.0; + } + else + in.TotalDeltaT = FDMExec->GetDeltaT() * rate; return false; } else { diff --git a/src/FDM/JSBSim/models/propulsion/FGPiston.cpp b/src/FDM/JSBSim/models/propulsion/FGPiston.cpp index 5880881e7..e16e49c89 100644 --- a/src/FDM/JSBSim/models/propulsion/FGPiston.cpp +++ b/src/FDM/JSBSim/models/propulsion/FGPiston.cpp @@ -51,7 +51,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGPiston.cpp,v 1.81 2015/09/27 09:54:21 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGPiston.cpp,v 1.82 2016/01/02 17:42:53 bcoconni Exp $"); IDENT(IdHdr,ID_PISTON); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -470,8 +470,6 @@ void FGPiston::Calculate(void) RunPreFunctions(); - TotalDeltaT = ( in.TotalDeltaT < 1e-9 ) ? 1.0 : in.TotalDeltaT; - /* The thruster controls the engine RPM because it encapsulates the gear ratio and other transmission variables */ RPM = Thruster->GetEngineRPM(); @@ -644,7 +642,7 @@ void FGPiston::doMAP(void) // Add a variable lag to manifold pressure changes double dMAP=(TMAP - p_ram * map_coefficient); - if (ManifoldPressureLag > TotalDeltaT) dMAP *= TotalDeltaT/ManifoldPressureLag; + if (ManifoldPressureLag > in.TotalDeltaT) dMAP *= in.TotalDeltaT/ManifoldPressureLag; TMAP -=dMAP; @@ -833,7 +831,7 @@ void FGPiston::doEGT(void) } else { // Drop towards ambient - guess an appropriate time constant for now combustion_efficiency = 0; dEGTdt = (RankineToKelvin(in.Temperature) - ExhaustGasTemp_degK) / 100.0; - delta_T_exhaust = dEGTdt * TotalDeltaT; + delta_T_exhaust = dEGTdt * in.TotalDeltaT; ExhaustGasTemp_degK += delta_T_exhaust; } @@ -873,7 +871,7 @@ void FGPiston::doCHT(void) double HeatCapacityCylinderHead = CpCylinderHead * MassCylinderHead; CylinderHeadTemp_degK += - (dqdt_cylinder_head / HeatCapacityCylinderHead) * TotalDeltaT; + (dqdt_cylinder_head / HeatCapacityCylinderHead) * in.TotalDeltaT; } @@ -908,7 +906,7 @@ void FGPiston::doOilTemperature(void) double dOilTempdt = (target_oil_temp - OilTemp_degK) / time_constant; - OilTemp_degK += (dOilTempdt * TotalDeltaT); + OilTemp_degK += (dOilTempdt * in.TotalDeltaT); } //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% diff --git a/src/FDM/JSBSim/models/propulsion/FGPiston.h b/src/FDM/JSBSim/models/propulsion/FGPiston.h index b23a51c29..1934f221e 100644 --- a/src/FDM/JSBSim/models/propulsion/FGPiston.h +++ b/src/FDM/JSBSim/models/propulsion/FGPiston.h @@ -46,7 +46,7 @@ INCLUDES DEFINITIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ -#define ID_PISTON "$Id: FGPiston.h,v 1.37 2015/02/27 20:36:47 bcoconni Exp $" +#define ID_PISTON "$Id: FGPiston.h,v 1.38 2016/01/02 17:42:53 bcoconni Exp $" #define FG_MAX_BOOST_SPEEDS 3 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -211,7 +211,7 @@ boostspeed they refer to: @author David Megginson (initial porting and additional code) @author Ron Jensen (additional engine code) @see Taylor, Charles Fayette, "The Internal Combustion Engine in Theory and Practice" - @version $Id: FGPiston.h,v 1.37 2015/02/27 20:36:47 bcoconni Exp $ + @version $Id: FGPiston.h,v 1.38 2016/01/02 17:42:53 bcoconni Exp $ */ /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -351,7 +351,6 @@ private: // // Inputs (in addition to those in FGEngine). // - double TotalDeltaT; // Time in seconds between calls. double p_amb; // Pascals double p_ram; // Pascals double T_amb; // degrees Kelvin diff --git a/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp b/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp index 81ea5b08a..f8a4d345c 100644 --- a/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp +++ b/src/FDM/JSBSim/models/propulsion/FGPropeller.cpp @@ -45,7 +45,7 @@ using namespace std; namespace JSBSim { -IDENT(IdSrc,"$Id: FGPropeller.cpp,v 1.56 2015/12/13 08:56:06 bcoconni Exp $"); +IDENT(IdSrc,"$Id: FGPropeller.cpp,v 1.57 2016/01/02 17:42:53 bcoconni Exp $"); IDENT(IdHdr,ID_PROPELLER); /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -205,9 +205,6 @@ double FGPropeller::Calculate(double EnginePower) double Vel = localAeroVel(eU) + Vinduced; double rho = in.Density; double RPS = RPM/60.0; - // The time step should not be 0 for the propeller RPM to reach a steady - // value during trimming. - deltaT = ( in.TotalDeltaT > 0.0 ) ? in.TotalDeltaT : 0.01; // Calculate helical tip Mach double Area = 0.25*Diameter*Diameter*M_PI; @@ -288,7 +285,7 @@ double FGPropeller::Calculate(double EnginePower) if (omega > 0.0) ExcessTorque = PowerAvailable / omega; else ExcessTorque = PowerAvailable / 1.0; - RPM = (RPS + ((ExcessTorque / Ixx) / (2.0 * M_PI)) * deltaT) * 60.0; + RPM = (RPS + ((ExcessTorque / Ixx) / (2.0 * M_PI)) * in.TotalDeltaT) * 60.0; if (RPM < 0.0) RPM = 0.0; // Engine won't turn backwards @@ -329,7 +326,7 @@ double FGPropeller::GetPowerRequired(void) double dRPM = rpmReq - RPM; // The pitch of a variable propeller cannot be changed when the RPMs are // too low - the oil pump does not work. - if (RPM > 200) Pitch -= dRPM * deltaT; + if (RPM > 200) Pitch -= dRPM * in.TotalDeltaT; if (Pitch < MinPitch) Pitch = MinPitch; else if (Pitch > MaxPitch) Pitch = MaxPitch; diff --git a/src/FDM/JSBSim/models/propulsion/FGPropeller.h b/src/FDM/JSBSim/models/propulsion/FGPropeller.h index 490f87b80..b5cf0111c 100644 --- a/src/FDM/JSBSim/models/propulsion/FGPropeller.h +++ b/src/FDM/JSBSim/models/propulsion/FGPropeller.h @@ -45,7 +45,7 @@ INCLUDES DEFINITIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ -#define ID_PROPELLER "$Id: FGPropeller.h,v 1.25 2015/12/13 08:56:06 bcoconni Exp $" +#define ID_PROPELLER "$Id: FGPropeller.h,v 1.26 2016/01/02 17:42:53 bcoconni Exp $" /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FORWARD DECLARATIONS @@ -142,7 +142,7 @@ CLASS DOCUMENTATION
  • Various NACA Technical Notes and Reports
    • @author Jon S. Berndt - @version $Id: FGPropeller.h,v 1.25 2015/12/13 08:56:06 bcoconni Exp $ + @version $Id: FGPropeller.h,v 1.26 2016/01/02 17:42:53 bcoconni Exp $ @see FGEngine @see FGThruster */ @@ -303,7 +303,6 @@ private: bool Reversed; // true, when propeller is reversed double Reverse_coef; // 0 - 1 defines AdvancePitch (0=MIN_PITCH 1=REVERSE_PITCH) bool Feathered; // true, if feather command - double deltaT; // Time step }; } //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%