Updated to match changes in radiostack.[ch]xx

[flightgear.git] / src / FDM / JSBSim / FGRocket.cpp

diff --git a/src/FDM/JSBSim/FGRocket.cpp b/src/FDM/JSBSim/FGRocket.cpp
index 1957d1df716957e5ab9cf28ab382873f0c103d76..ec1bb72151a001afa3ec5baa04cf7d98d23b6ff5 100644 (file)
--- a/src/FDM/JSBSim/FGRocket.cpp
+++ b/src/FDM/JSBSim/FGRocket.cpp
@@ -1,4 +1,4 @@
-/*******************************************************************************
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
  Module:       FGRocket.cpp
  Author:       Jon S. Berndt
@@ -34,23 +34,130 @@ HISTORY
 --------------------------------------------------------------------------------
 09/12/2000  JSB  Created
 
-********************************************************************************
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 INCLUDES
-*******************************************************************************/
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
 #include "FGRocket.h"
 
-static const char *IdSrc = "$Header$";
+static const char *IdSrc = "$Id$";
 static const char *IdHdr = ID_ROCKET;
 
-/*******************************************************************************
-************************************ CODE **************************************
-*******************************************************************************/
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+CLASS IMPLEMENTATION
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
+FGRocket::FGRocket(FGFDMExec* exec, FGConfigFile* Eng_cfg) : FGEngine(exec)
+{
+  string token;
+
+  Name = Eng_cfg->GetValue("NAME");
+  Eng_cfg->GetNextConfigLine();
+
+  while (Eng_cfg->GetValue() != string("/FG_ROCKET")) {
+    *Eng_cfg >> token;
+    if      (token == "SHR")           *Eng_cfg >> SHR;
+    else if (token == "MAX_PC")        *Eng_cfg >> maxPC;
+    else if (token == "PROP_EFF")      *Eng_cfg >> propEff;
+    else if (token == "MAXTHROTTLE")   *Eng_cfg >> MaxThrottle;
+    else if (token == "MINTHROTTLE")   *Eng_cfg >> MinThrottle;
+    else if (token == "SLFUELFLOWMAX") *Eng_cfg >> SLFuelFlowMax;
+    else if (token == "SLOXIFLOWMAX")  *Eng_cfg >> SLOxiFlowMax;
+    else if (token == "VARIANCE")      *Eng_cfg >> Variance;
+    else cerr << "Unhandled token in Engine config file: " << token << endl;
+  }
+
+  Debug(0);
+
+  EngineNumber = 0;
+  Type = etRocket;
+
+  PC = 0.0;
+  kFactor = (2.0*SHR*SHR/(SHR-1.0))*pow(2.0/(SHR+1), (SHR+1)/(SHR-1));
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FGRocket::~FGRocket()
+{
+  Debug(1);
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+double FGRocket::Calculate(double pe)
+{
+  double Cf=0;
+
+  ConsumeFuel();
+
+  Throttle = FCS->GetThrottlePos(EngineNumber);
+
+  if (Throttle < MinThrottle || Starved) {
+    PctPower = Thrust = 0.0; // desired thrust
+    Flameout = true;
+    PC = 0.0;
+  } else {
+    PctPower = Throttle / MaxThrottle;
+    PC = maxPC*PctPower * (1.0 + Variance * ((double)rand()/(double)RAND_MAX - 0.5));
+    Cf = sqrt(kFactor*(1 - pow(pe/(PC), (SHR-1)/SHR)));
+    Flameout = false;
+  }
+
+  return Cf*maxPC*PctPower*propEff;
+}
 
-FGRocket::FGRocket(FGFDMExec* fdex, string enginePath, string engineName, int num) :
-                                 FGEngine(fdex, enginePath, engineName, num)
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+//    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 FGRocket::Debug(int from)
 {
-  //
+  if (debug_lvl <= 0) return;
+
+  if (debug_lvl & 1) { // Standard console startup message output
+    if (from == 0) { // Constructor
+      cout << "      Engine Name: " << Name << endl;
+      cout << "      Specific Heat Ratio = " << SHR << endl;
+      cout << "      Maximum Chamber Pressure = " << maxPC << endl;
+      cout << "      Propulsive Efficiency = " << propEff << endl;
+      cout << "      MaxThrottle = " << MaxThrottle << endl;
+      cout << "      MinThrottle = " << MinThrottle << endl;
+      cout << "      FuelFlowMax = " << SLFuelFlowMax << endl;
+      cout << "      OxiFlowMax = " << SLOxiFlowMax << endl;
+      cout << "      Variance = " << Variance << endl;
+    }
+  }
+  if (debug_lvl & 2 ) { // Instantiation/Destruction notification
+    if (from == 0) cout << "Instantiated: FGRocket" << endl;
+    if (from == 1) cout << "Destroyed:    FGRocket" << 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;
+    }
+  }
 }