/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
+
Module: FGAircraft.cpp
Author: Jon S. Berndt
- Date started: 12/12/98
+ Date started: 12/12/98
Purpose: Encapsulates an aircraft
Called by: FGFDMExec
------------- 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
--------------------------------------------------------------------------------
Models the aircraft reactions and forces. This class is instantiated by the
-FGFDMExec class and scheduled as an FDM entry.
-
+FGFDMExec class and scheduled as an FDM entry.
+
HISTORY
--------------------------------------------------------------------------------
12/12/98 JSB Created
04/03/99 JSB Changed Aero() method to correct body axis force calculation
from wind vector. Fix provided by Tony Peden.
05/03/99 JSB Changed (for the better?) the way configurations are read in.
-9/17/99 TP Combined force and moment functions. Added aero reference
- point to config file. Added calculations for moments due to
+9/17/99 TP Combined force and moment functions. Added aero reference
+ point to config file. Added calculations for moments due to
difference in cg and aero reference point
-
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
COMMENTS, REFERENCES, and NOTES
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
#include "FGInertial.h"
#include "FGGroundReactions.h"
#include "FGAerodynamics.h"
-#include "FGTranslation.h"
-#include "FGRotation.h"
-#include "FGAtmosphere.h"
#include "FGState.h"
#include "FGFDMExec.h"
-#include "FGFCS.h"
-#include "FGPosition.h"
-#include "FGAuxiliary.h"
-#include "FGOutput.h"
+#include "FGPropagate.h"
#include "FGPropertyManager.h"
+namespace JSBSim {
+
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
DEFINITIONS
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
FGAircraft::FGAircraft(FGFDMExec* fdmex) : FGModel(fdmex)
{
Name = "FGAircraft";
- WingIncidence = 0.0;
- impending_stall = stall_hyst = 0.0;
- alphaclmin = alphaclmax = 0.0;
- alphahystmin = alphahystmax = 0.0;
+ WingSpan = 0.0;
HTailArea = VTailArea = 0.0;
HTailArm = VTailArm = 0.0;
lbarh = lbarv = 0.0;
vbarh = vbarv = 0.0;
- bi2vel = ci2vel = 0.0;
- alphaw = 0.0;
+ WingIncidence = 0.0;
bind();
bool FGAircraft::Run(void)
{
- double twovel;
- double alpha;
-
if (!FGModel::Run()) { // if false then execute this Run()
vForces.InitMatrix();
vForces += Aerodynamics->GetForces();
- vForces += Inertial->GetForces();
vForces += Propulsion->GetForces();
vForces += GroundReactions->GetForces();
vMoments += Aerodynamics->GetMoments();
vMoments += Propulsion->GetMoments();
vMoments += GroundReactions->GetMoments();
-
+
vBodyAccel = vForces/MassBalance->GetMass();
-
+
vNcg = vBodyAccel/Inertial->gravity();
vNwcg = State->GetTb2s() * vNcg;
vNwcg(3) = -1*vNwcg(3) + 1;
-
- twovel = 2*Translation->GetVt();
- if (twovel > 0) {
- bi2vel = WingSpan / twovel;
- ci2vel = cbar / twovel;
- }
-
- alphaw = Translation->Getalpha() + WingIncidence;
-
- alpha=Translation->Getalpha();
-
- if (alphaclmax != 0) {
- if (alpha > 0.85*alphaclmax) {
- impending_stall = 10*(alpha/alphaclmax - 0.85);
- } else {
- impending_stall = 0;
- }
-
- }
- if(alphahystmax != 0.0 && alphahystmin != 0.0) {
- if( alpha > alphahystmax ) {
- stall_hyst = 1;
- } else if(alpha < alphahystmin) {
- stall_hyst = 0;
- }
- }
-
-
return false;
} else { // skip Run() execution this time
return true;
{
string token = "";
string parameter;
- double EW, bixx, biyy, bizz, bixy, bixz;
+ double EW, bixx, biyy, bizz, bixy, bixz, biyz;
double pmWt, pmX, pmY, pmZ;
FGColumnVector3 vbaseXYZcg;
+ bixx = biyy = bizz = bixy = bixz = biyz = 0.0;
+
AC_cfg->GetNextConfigLine();
while ((token = AC_cfg->GetValue()) != string("/METRICS")) {
if (debug_lvl > 0) cout << " WingSpan: " << WingSpan << endl;
} else if (parameter == "AC_WINGINCIDENCE") {
*AC_cfg >> WingIncidence;
- if (debug_lvl > 0) cout << " Chord: " << cbar << endl;
+ if (debug_lvl > 0) cout << " Incidence: " << WingIncidence << endl;
} else if (parameter == "AC_CHORD") {
*AC_cfg >> cbar;
if (debug_lvl > 0) cout << " Chord: " << cbar << endl;
if (debug_lvl > 0) cout << " V. Tail Arm: " << VTailArm << endl;
} else if (parameter == "AC_IXX") {
*AC_cfg >> bixx;
- if (debug_lvl > 0) cout << " baseIxx: " << bixx << endl;
- MassBalance->SetBaseIxx(bixx);
+ if (debug_lvl > 0) cout << " baseIxx: " << bixx << " slug-ft2" << endl;
} else if (parameter == "AC_IYY") {
*AC_cfg >> biyy;
- if (debug_lvl > 0) cout << " baseIyy: " << biyy << endl;
- MassBalance->SetBaseIyy(biyy);
+ if (debug_lvl > 0) cout << " baseIyy: " << biyy << " slug-ft2" << endl;
} else if (parameter == "AC_IZZ") {
*AC_cfg >> bizz;
- if (debug_lvl > 0) cout << " baseIzz: " << bizz << endl;
- MassBalance->SetBaseIzz(bizz);
+ if (debug_lvl > 0) cout << " baseIzz: " << bizz << " slug-ft2" << endl;
} else if (parameter == "AC_IXY") {
*AC_cfg >> bixy;
- if (debug_lvl > 0) cout << " baseIxy: " << bixy << endl;
- MassBalance->SetBaseIxy(bixy);
+ if (debug_lvl > 0) cout << " baseIxy: " << bixy << " slug-ft2" << endl;
} else if (parameter == "AC_IXZ") {
*AC_cfg >> bixz;
- if (debug_lvl > 0) cout << " baseIxz: " << bixz << endl;
- MassBalance->SetBaseIxz(bixz);
+ if (debug_lvl > 0) cout << " baseIxz: " << bixz << " slug-ft2" << endl;
+ } else if (parameter == "AC_IYZ") {
+ *AC_cfg >> biyz;
+ if (debug_lvl > 0) cout << " baseIyz: " << biyz << " slug-ft2" << endl;
} else if (parameter == "AC_EMPTYWT") {
*AC_cfg >> EW;
MassBalance->SetEmptyWeight(EW);
- if (debug_lvl > 0) cout << " EmptyWeight: " << EW << endl;
+ if (debug_lvl > 0) cout << " EmptyWeight: " << EW << " lbm" << endl;
} else if (parameter == "AC_CGLOC") {
*AC_cfg >> vbaseXYZcg(eX) >> vbaseXYZcg(eY) >> vbaseXYZcg(eZ);
MassBalance->SetBaseCG(vbaseXYZcg);
} else if (parameter == "AC_AERORP") {
*AC_cfg >> vXYZrp(eX) >> vXYZrp(eY) >> vXYZrp(eZ);
if (debug_lvl > 0) cout << " Ref Pt (x, y, z): " << vXYZrp << endl;
- } else if (parameter == "AC_ALPHALIMITS") {
- *AC_cfg >> alphaclmin >> alphaclmax;
- if (debug_lvl > 0) cout << " Maximum Alpha: " << alphaclmax
- << " Minimum Alpha: " << alphaclmin
- << endl;
- } else if (parameter == "AC_HYSTLIMITS") {
- *AC_cfg >> alphahystmin >> alphahystmax;
- if (debug_lvl > 0) cout << " Hysteresis Start: " << alphahystmax
- << " Hysteresis End: " << alphahystmin
- << endl;
+ } else if (parameter == "AC_VRP") {
+ *AC_cfg >> vXYZvrp(eX) >> vXYZvrp(eY) >> vXYZvrp(eZ);
+ if (debug_lvl > 0) cout << " Visual Ref Pt (x, y, z): " << vXYZvrp << endl;
} else if (parameter == "AC_POINTMASS") {
*AC_cfg >> pmWt >> pmX >> pmY >> pmZ;
MassBalance->AddPointMass(pmWt, pmX, pmY, pmZ);
<< endl;
}
}
-
+
+ MassBalance->SetAircraftBaseInertias(FGMatrix33( bixx, -bixy, -bixz,
+ -bixy, biyy, -biyz,
+ -bixz, -biyz, bizz ));
+
// calculate some derived parameters
if (cbar != 0.0) {
lbarh = HTailArm/cbar;
vbarh = HTailArm*HTailArea / (cbar*WingArea);
vbarv = VTailArm*VTailArea / (cbar*WingArea);
}
- }
+ }
return true;
}
(PMF)&FGAircraft::GetForces);
PropertyManager->Tie("forces/fbz-total-lbs", this,3,
(PMF)&FGAircraft::GetForces);
- PropertyManager->Tie("metrics/aero-rp-x-ft", this,1,
+ PropertyManager->Tie("metrics/aero-rp-x-in", this,1,
(PMF)&FGAircraft::GetXYZrp);
- PropertyManager->Tie("metrics/aero-rp-y-ft", this,2,
+ PropertyManager->Tie("metrics/aero-rp-y-in", this,2,
(PMF)&FGAircraft::GetXYZrp);
- PropertyManager->Tie("metrics/aero-rp-z-ft", this,3,
+ PropertyManager->Tie("metrics/aero-rp-z-in", this,3,
(PMF)&FGAircraft::GetXYZrp);
- PropertyManager->Tie("metrics/eyepoint-x-ft", this,1,
+ PropertyManager->Tie("metrics/eyepoint-x-in", this,1,
(PMF)&FGAircraft::GetXYZep);
- PropertyManager->Tie("metrics/eyepoint-y-ft", this,2,
+ PropertyManager->Tie("metrics/eyepoint-y-in", this,2,
(PMF)&FGAircraft::GetXYZep);
- PropertyManager->Tie("metrics/eyepoint-z-ft", this,3,
+ PropertyManager->Tie("metrics/eyepoint-z-in", this,3,
(PMF)&FGAircraft::GetXYZep);
- PropertyManager->Tie("metrics/alpha-max-deg", this,
- &FGAircraft::GetAlphaCLMax,
- &FGAircraft::SetAlphaCLMax,
- true);
- PropertyManager->Tie("metrics/alpha-min-deg", this,
- &FGAircraft::GetAlphaCLMin,
- &FGAircraft::SetAlphaCLMin,
- true);
- PropertyManager->Tie("aero/bi2vel", this,
- &FGAircraft::GetBI2Vel);
- PropertyManager->Tie("aero/ci2vel", this,
- &FGAircraft::GetCI2Vel);
- PropertyManager->Tie("aero/alpha-wing-rad", this,
- &FGAircraft::GetAlphaW);
- PropertyManager->Tie("systems/stall-warn-norm", this,
- &FGAircraft::GetStallWarn);
- PropertyManager->Tie("aero/stall-hyst-norm", this,
- &FGAircraft::GetHysteresisParm);
-
+ PropertyManager->Tie("metrics/visualrefpoint-x-in", this,1,
+ (PMF)&FGAircraft::GetXYZvrp);
+ PropertyManager->Tie("metrics/visualrefpoint-y-in", this,2,
+ (PMF)&FGAircraft::GetXYZvrp);
+ PropertyManager->Tie("metrics/visualrefpoint-z-in", this,3,
+ (PMF)&FGAircraft::GetXYZvrp);
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
PropertyManager->Untie("forces/fbx-total-lbs");
PropertyManager->Untie("forces/fby-total-lbs");
PropertyManager->Untie("forces/fbz-total-lbs");
- PropertyManager->Untie("metrics/aero-rp-x-ft");
- PropertyManager->Untie("metrics/aero-rp-y-ft");
- PropertyManager->Untie("metrics/aero-rp-z-ft");
- PropertyManager->Untie("metrics/eyepoint-x-ft");
- PropertyManager->Untie("metrics/eyepoint-y-ft");
- PropertyManager->Untie("metrics/eyepoint-z-ft");
- PropertyManager->Untie("metrics/alpha-max-deg");
- PropertyManager->Untie("metrics/alpha-min-deg");
- PropertyManager->Untie("aero/bi2vel");
- PropertyManager->Untie("aero/ci2vel");
- PropertyManager->Untie("aero/alpha-wing-rad");
- PropertyManager->Untie("systems/stall-warn-norm");
+ PropertyManager->Untie("metrics/aero-rp-x-in");
+ PropertyManager->Untie("metrics/aero-rp-y-in");
+ PropertyManager->Untie("metrics/aero-rp-z-in");
+ PropertyManager->Untie("metrics/eyepoint-x-in");
+ PropertyManager->Untie("metrics/eyepoint-y-in");
+ PropertyManager->Untie("metrics/eyepoint-z-in");
+ PropertyManager->Untie("metrics/visualrefpoint-x-in");
+ PropertyManager->Untie("metrics/visualrefpoint-y-in");
+ PropertyManager->Untie("metrics/visualrefpoint-z-in");
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
}
}
+} // namespace JSBSim
projects / flightgear.git / blobdiff