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Solves #157: change the handling of negative angle of attack in SimWingUpdate

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git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@3283 30fe4595-0a0c-4342-8851-515496e4dcbd

Former-commit-id: 5e304c1eca61abe6ee10c3b97f518587206fb269
Former-commit-id: 0e79638e22fede409f751d3d5678b22b9b64051a
This commit is contained in:
kakukri 2011-01-23 16:10:31 +00:00
parent fe9102fdf7
commit 61926974f5
1 changed files with 10 additions and 12 deletions
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22
src/modules/simu/simuv2.1/aero.cpp
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@ -137,19 +137,17 @@ SimWingUpdate(tCar *car, int index, tSituation* s)
tdble vt2 = car->airSpeed2; tdble vt2 = car->airSpeed2;
// compute angle of attack // compute angle of attack
tdble aoa = atan2(car->DynGC.vel.z, car->DynGC.vel.x) + car->DynGCg.pos.ay; tdble aoa = atan2(car->DynGC.vel.z, car->DynGC.vel.x) + car->DynGCg.pos.ay;
if (aoa < 0) {
wing->forces.x = wing->forces.z = 0;
} else {
aoa += wing->angle;
// the sinus of the angle of attack
tdble sinaoa = sin(aoa);
if (car->DynGC.vel.x > 0.0f) { aoa += wing->angle;
wing->forces.x = wing->Kx * vt2 * (1.0f + (tdble)car->dammage / 10000.0) * sinaoa; // the sinus of the angle of attack
wing->forces.z = wing->Kz * vt2 * sinaoa; tdble sinaoa = sin(aoa);
} else {
wing->forces.x = wing->forces.z = 0.0f; if (car->DynGC.vel.x > 0.0f) {
} //make drag always negative and have a minimal angle of attack
wing->forces.x = wing->Kx * vt2 * (1.0f + (tdble)car->dammage / 10000.0) * MAX(fabs(sinaoa), 0.02);
wing->forces.z = wing->Kz * vt2 * sinaoa;
} else {
wing->forces.x = wing->forces.z = 0.0f;
} }
} }