fly/flightgear
1
0
Fork 0
Code Activity

YASIM: method name clarification (and indention)

Browse source
This commit is contained in:
Henning Stahlke 2017-11-19 16:11:57 +01:00
parent 0e6552cddf
commit fb6f965db7
4 changed files with 33 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
src/FDM/YASim/Airplane.cpp
View file

@ -787,35 +787,35 @@ void Airplane::applyDragFactor(float factor)
float applied = Math::pow(factor, SOLVE_TWEAK);
_dragFactor *= applied;
if(_wing)
_wing->setDragScale(_wing->getDragScale() * applied);
_wing->multiplyDragCoefficient(applied);
if(_tail)
_tail->setDragScale(_tail->getDragScale() * applied);
_tail->multiplyDragCoefficient(applied);
int i;
for(i=0; i<_vstabs.size(); i++) {
Wing* w = (Wing*)_vstabs.get(i);
w->setDragScale(w->getDragScale() * applied);
Wing* w = (Wing*)_vstabs.get(i);
w->multiplyDragCoefficient(applied);
}
for(i=0; i<_fuselages.size(); i++) {
Fuselage* f = (Fuselage*)_fuselages.get(i);
int j;
for(j=0; j<f->surfs.size(); j++) {
Surface* s = (Surface*)f->surfs.get(j);
if( isVersionOrNewer( YASIM_VERSION_32 ) ) {
// For new YASim, the solver drag factor is only applied to
// the X axis for Fuselage Surfaces.
// The solver is tuning the coefficient for longitudinal drag,
// along the direction of flight. A fuselage's lateral drag
// is completely independent and is normally much higher;
// it won't be affected by the streamlining done to reduce
// longitudinal drag. So the solver should only adjust the
// fuselage's longitudinal (X axis) drag coefficient.
s->setXDrag(s->getXDrag() * applied);
} else {
// Originally YASim applied the drag factor to all axes
// for Fuselage Surfaces.
s->setDragCoefficient(s->getDragCoefficient() * applied);
}
}
Fuselage* f = (Fuselage*)_fuselages.get(i);
int j;
for(j=0; j<f->surfs.size(); j++) {
Surface* s = (Surface*)f->surfs.get(j);
if( isVersionOrNewer( YASIM_VERSION_32 ) ) {
// For new YASim, the solver drag factor is only applied to
// the X axis for Fuselage Surfaces.
// The solver is tuning the coefficient for longitudinal drag,
// along the direction of flight. A fuselage's lateral drag
// is completely independent and is normally much higher;
// it won't be affected by the streamlining done to reduce
// longitudinal drag. So the solver should only adjust the
// fuselage's longitudinal (X axis) drag coefficient.
s->setXDrag(s->getXDrag() * applied);
} else {
// Originally YASim applied the drag factor to all axes
// for Fuselage Surfaces.
s->setDragCoefficient(s->getDragCoefficient() * applied);
}
}
}
for(i=0; i<_weights.size(); i++) {
WeightRec* wr = (WeightRec*)_weights.get(i);

2
src/FDM/YASim/FGFDM.cpp
View file

@ -853,7 +853,7 @@ Wing* FGFDM::parseWing(XMLAttributes* a, const char* type, Version * version)
w->setInducedDrag(0.7*attrf(a, "idrag", 1));
float effect = attrf(a, "effectiveness", 1);
w->setDragScale(w->getDragScale()*effect);
w->multiplyDragCoefficient(effect);
_currObj = w;
return w;

7
src/FDM/YASim/Wing.cpp
View file

@ -253,7 +253,7 @@ void Wing::addSurface(Surface* s, float weight, float twist)
_surfs.add(sr);
}
void Wing::setDragScale(float scale)
void Wing::setDragCoefficient(float scale)
{
_dragScale = scale;
for(int i=0; i<_surfs.size(); i++) {
@ -262,6 +262,11 @@ void Wing::setDragScale(float scale)
}
}
void Wing::multiplyDragCoefficient(float factor)
{
setDragCoefficient(_dragScale * factor);
}
void Wing::setLiftRatio(float ratio)
{
_liftRatio = ratio;

4
src/FDM/YASim/Wing.hpp
View file

@ -90,8 +90,8 @@ public:
// The overall drag coefficient for the wing as a whole. Units are
// arbitrary.
void setDragScale(float scale);
float getDragScale() const { return _dragScale; }
void setDragCoefficient(float scale);
void multiplyDragCoefficient(float factor);
// The ratio of force along the Z (lift) direction of each wing
// segment to that along the X (drag) direction.