Hi all , and Andy,
I've added propeller reverse to YASim , with Controlmap type
PROPREVERSE ... I've tested it with the piston and turboprop , and seems
to be working well . Just wonder if this could be added if Andy approves .
Of course , it might need improvements , but I thought I'd include the
patch for comments , viewing , etc.
All it does is multiply the thrust by -0.2 when the chosen property,
("/controls/engines/engine/reverser", here), is true. Wasn't sure what
the best factor was , most of the data sheets i've
read show blade reverse angles of about -8 degrees.
Hope it can be included ...
Cheers
Index: ControlMap.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/ControlMap.cpp,v
retrieving revision 1.13
diff -U 3 -r1.13 ControlMap.cpp
--- ControlMap.cpp 10 Dec 2007 19:25:24 -0000 1.13
+++ ControlMap.cpp 27 Sep 2008 05:47:56 -0000
@@ -196,6 +196,7 @@
case ADVANCE: ((PropEngine*)obj)->setAdvance(lval); break;
case PROPPITCH: ((PropEngine*)obj)->setPropPitch(lval); break;
case PROPFEATHER: ((PropEngine*)obj)->setPropFeather((int)lval); break;
+ case PROPREVERSE: ((PropEngine*)obj)->setPropReverse((bool)lval);
break;
case REHEAT: ((Jet*)obj)->setReheat(lval); break;
case VECTOR: ((Jet*)obj)->setRotation(lval); break;
case BRAKE: ((Gear*)obj)->setBrake(lval); break;
Index: ControlMap.hpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/ControlMap.hpp,v
retrieving revision 1.12
diff -U 3 -r1.12 ControlMap.hpp
--- ControlMap.hpp 10 Dec 2007 19:25:24 -0000 1.12
+++ ControlMap.hpp 27 Sep 2008 05:47:56 -0000
@@ -13,7 +13,7 @@
ADVANCE, REHEAT, PROP,
BRAKE, STEER, EXTEND, HEXTEND, LEXTEND,
INCIDENCE, FLAP0, FLAP1, SLAT, SPOILER, VECTOR,
- BOOST, CASTERING, PROPPITCH, PROPFEATHER,
+ BOOST, CASTERING, PROPPITCH, PROPFEATHER,PROPREVERSE,
COLLECTIVE, CYCLICAIL, CYCLICELE, ROTORENGINEON,
TILTYAW, TILTPITCH, TILTROLL,
ROTORBRAKE, ROTORENGINEMAXRELTORQUE, ROTORRELTARGET,
Index: FGFDM.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/FGFDM.cpp,v
retrieving revision 1.55
diff -U 3 -r1.55 FGFDM.cpp
--- FGFDM.cpp 13 Apr 2008 21:12:36 -0000 1.55
+++ FGFDM.cpp 27 Sep 2008 05:47:57 -0000
@@ -954,6 +954,7 @@
if(eq(name, "CASTERING")) return ControlMap::CASTERING;
if(eq(name, "PROPPITCH")) return ControlMap::PROPPITCH;
if(eq(name, "PROPFEATHER")) return ControlMap::PROPFEATHER;
+ if(eq(name, "PROPREVERSE")) return ControlMap::PROPREVERSE;
if(eq(name, "COLLECTIVE")) return ControlMap::COLLECTIVE;
if(eq(name, "CYCLICAIL")) return ControlMap::CYCLICAIL;
if(eq(name, "CYCLICELE")) return ControlMap::CYCLICELE;
Index: PropEngine.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/PropEngine.cpp,v
retrieving revision 1.18
diff -U 3 -r1.18 PropEngine.cpp
--- PropEngine.cpp 27 Feb 2006 23:35:02 -0000 1.18
+++ PropEngine.cpp 27 Sep 2008 05:47:57 -0000
@@ -42,6 +42,12 @@
_prop->setPropPitch(proppitch);
}
+void PropEngine::setPropReverse(bool state)
+{
+ // toggle Propeller reverse
+ _prop->setPropReverse(state);
+}
+
void PropEngine::setPropFeather(int state)
{
// toggle prop feathering on/off
Index: PropEngine.hpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/PropEngine.hpp,v
retrieving revision 1.8
diff -U 3 -r1.8 PropEngine.hpp
--- PropEngine.hpp 13 Dec 2004 23:48:43 -0000 1.8
+++ PropEngine.hpp 27 Sep 2008 05:47:57 -0000
@@ -18,6 +18,7 @@
void setMagnetos(int magnetos);
void setAdvance(float advance);
void setPropPitch(float proppitch);
+ void setPropReverse(bool state);
void setVariableProp(float min, float max);
void setPropFeather(int state);
void setGearRatio(float ratio) { _gearRatio = ratio; }
Index: Propeller.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/Propeller.cpp,v
retrieving revision 1.6
diff -U 3 -r1.6 Propeller.cpp
--- Propeller.cpp 26 Feb 2006 16:46:51 -0000 1.6
+++ Propeller.cpp 27 Sep 2008 05:47:57 -0000
@@ -25,6 +25,7 @@
_manual = false;
_proppitch = 0;
_propfeather = 0;
+ _propreverse = 0;
}
void Propeller::setTakeoff(float omega0, float power0)
@@ -68,6 +69,11 @@
_propfeather = (state != 0);
}
+void Propeller::setPropReverse(bool state)
+{
+ _propreverse = state;
+}
+
void Propeller::calc(float density, float v, float omega,
float* thrustOut, float* torqueOut)
{
@@ -114,7 +120,7 @@
torque = tau0 - tau0 * (lambda - 1) / (lambdaWM - 1);
torque *= 0.5f * density * V2 * _f0;
}
-
+ if(_propreverse)thrust =thrust*-0.2;
*thrustOut = thrust;
*torqueOut = torque;
}
Index: Propeller.hpp
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/FDM/YASim/Propeller.hpp,v
retrieving revision 1.4
diff -U 3 -r1.4 Propeller.hpp
--- Propeller.hpp 26 Feb 2006 16:46:51 -0000 1.4
+++ Propeller.hpp 27 Sep 2008 05:47:57 -0000
@@ -24,6 +24,8 @@
void setPropPitch(float proppitch);
+ void setPropReverse(bool state);
+
void setPropFeather(int state);
void setManualPitch();
@@ -46,6 +48,7 @@
bool _manual; // manual pitch mode
float _proppitch; // prop pitch control setting (0 ~ 1.0)
float _propfeather; // prop feather control setting (0 = norm, 1 = feather)
+ bool _propreverse; // prop reversed(0 ~1.0)
};
}; // namespace yasim
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