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YASim calculate max CG range (on x-axis) from gear positions, to implement checks later (a better guesstimate will follow).

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This commit is contained in:
Henning Stahlke 2017-03-11 22:41:57 +01:00
parent e78a763eef
commit dbf21b1ca8
3 changed files with 34 additions and 1 deletions
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21
src/FDM/YASim/Airplane.cpp
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@ -57,6 +57,8 @@ Airplane::Airplane()
_failureMsg = 0;
_wingsN = 0;
_cgMaxX = -1e6;
_cgMinX = 1e6;
}
Airplane::~Airplane()
@ -238,6 +240,10 @@ void Airplane::addGear(Gear* gear)
g->gear = gear;
g->surf = 0;
_gears.add(g);
float pos[3];
g->gear->getPosition(pos);
if (pos[0] > _cgMaxX) _cgMaxX = pos[0];
if (pos[0] < _cgMinX) _cgMinX = pos[0];
}
void Airplane::addThruster(Thruster* thruster, float mass, float* cg)
@ -320,6 +326,14 @@ void Airplane::setupState(const float aoa, const float speed, const float gla, S
s->pos[2] = 1;
}
/**
* @brief add contact point for crash detection
* used to add wingtips and fuselage nose and tail
*
* @param pos ...
* @return void
*/
void Airplane::addContactPoint(float* pos)
{
ContactRec* c = new ContactRec;
@ -522,6 +536,13 @@ void Airplane::compileGear(GearRec* gr)
_surfs.add(s);
}
/**
* @brief add "fake gear" per contact point
*
*
* @return void
*/
void Airplane::compileContactPoints()
{
// Figure it will compress by 20cm

9
src/FDM/YASim/Airplane.hpp
View file

@ -102,7 +102,10 @@ public:
static void setupState(const float aoa, const float speed, const float gla, yasim::State* s); // utility
void loadApproachControls();
void loadCruiseControls();
float getCGMinX() { return _cgMinX; }
float getCGMaxX() { return _cgMaxX; }
private:
struct Tank { float pos[3]; float cap; float fill;
float density; int handle; };
@ -182,6 +185,10 @@ private:
float _tailIncidence;
Control _approachElevator;
const char* _failureMsg;
// hard limits for cg from gear positions
float _cgMaxX;
float _cgMinX;
};
}; // namespace yasim

5
src/FDM/YASim/FGFDM.cpp
View file

@ -130,7 +130,12 @@ void FGFDM::init()
// alias to older name
fgGetNode("/yasim/gross-weight-lbs", true)->alias(_gross_weight_lbs);
// write some compile time information to property tree
_yasimN->getNode("config-version",true)->setIntValue(_airplane.getVersion());
_yasimN->getNode("model/cg-x-min",true)->setFloatValue(_airplane.getCGMinX());
_yasimN->getNode("model/cg-x-max",true)->setFloatValue(_airplane.getCGMaxX());
// prepare nodes for write at runtime
_cg_x = _yasimN->getNode("cg-x-m", true);
_cg_y = _yasimN->getNode("cg-y-m", true);
_cg_z = _yasimN->getNode("cg-z-m", true);