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This commit is contained in:
Henning Stahlke
parent
d4688d206a
commit
5f78545961
1 changed files with 91 additions and 91 deletions
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@ -33,9 +33,9 @@ static const float KTS2MPS = 0.514444444444;
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enum Config
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{
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CONFIG_NONE,
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CONFIG_APPROACH,
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CONFIG_CRUISE,
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CONFIG_NONE,
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CONFIG_APPROACH,
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CONFIG_CRUISE,
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};
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// Generate a graph of lift, drag and L/D against AoA at the specified
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@ -50,70 +50,70 @@ enum Config
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*/
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void yasim_graph(Airplane* a, float alt, float kts, int cfg = CONFIG_NONE)
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{
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Model* m = a->getModel();
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State s;
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m->setAir(Atmosphere::getStdPressure(alt),
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Atmosphere::getStdTemperature(alt),
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Atmosphere::getStdDensity(alt));
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Model* m = a->getModel();
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State s;
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switch (cfg) {
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case CONFIG_APPROACH:
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a->loadApproachControls();
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break;
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case CONFIG_CRUISE:
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a->loadCruiseControls();
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break;
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case CONFIG_NONE:
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break;
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}
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//if we fake the properties we could also use FGFDM::getExternalInput()
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m->setAir(Atmosphere::getStdPressure(alt),
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Atmosphere::getStdTemperature(alt),
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Atmosphere::getStdDensity(alt));
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switch (cfg) {
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case CONFIG_APPROACH:
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a->loadApproachControls();
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break;
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case CONFIG_CRUISE:
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a->loadCruiseControls();
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break;
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case CONFIG_NONE:
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break;
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}
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//if we fake the properties we could also use FGFDM::getExternalInput()
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m->getBody()->recalc();
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m->getBody()->recalc();
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for(int deg=-179; deg<=179; deg++) {
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float aoa = deg * DEG2RAD;
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Airplane::setupState(aoa, kts * KTS2MPS, 0 ,&s);
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m->getBody()->reset();
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m->initIteration();
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m->calcForces(&s);
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for(int deg=-179; deg<=179; deg++) {
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float aoa = deg * DEG2RAD;
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Airplane::setupState(aoa, kts * KTS2MPS, 0 ,&s);
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m->getBody()->reset();
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m->initIteration();
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m->calcForces(&s);
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float acc[3];
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m->getBody()->getAccel(acc);
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Math::tmul33(s.orient, acc, acc);
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float acc[3];
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m->getBody()->getAccel(acc);
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Math::tmul33(s.orient, acc, acc);
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float drag = acc[0] * (-1/9.8);
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float lift = 1 + acc[2] * (1/9.8);
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float drag = acc[0] * (-1/9.8);
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float lift = 1 + acc[2] * (1/9.8);
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printf("%d %g %g %g\n", deg, lift, drag, lift/drag);
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}
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printf("%d %g %g %g\n", deg, lift, drag, lift/drag);
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}
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}
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void yasim_masses(Airplane* a)
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{
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RigidBody* body = a->getModel()->getBody();
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int i, N = body->numMasses();
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float pos[3];
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float m, mass = 0;
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printf("id posx posy posz mass\n");
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for (i = 0; i < N; i++)
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{
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body->getMassPosition(i, pos);
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m = body->getMass(i);
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printf("%d %.3f %.3f %.3f %.3f\n", i, pos[0], pos[1], pos[2], m);
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mass += m;
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}
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printf("Total mass: %g", mass);
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RigidBody* body = a->getModel()->getBody();
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int i, N = body->numMasses();
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float pos[3];
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float m, mass = 0;
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printf("id posx posy posz mass\n");
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for (i = 0; i < N; i++)
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{
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body->getMassPosition(i, pos);
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m = body->getMass(i);
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printf("%d %.3f %.3f %.3f %.3f\n", i, pos[0], pos[1], pos[2], m);
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mass += m;
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}
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printf("Total mass: %g", mass);
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}
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int usage()
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{
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fprintf(stderr, "Usage: yasim <ac.xml> [-g [-a alt] [-s kts] [-approach | -cruise] ]\n");
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fprintf(stderr, " yasim <ac.xml> [-m]\n");
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fprintf(stderr, " -g print lift/drag table: aoa, lift, drag, lift/drag \n");
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fprintf(stderr, " -m print mass distribution table: id, x, y, z, mass \n");
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return 1;
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fprintf(stderr, "Usage: yasim <ac.xml> [-g [-a alt] [-s kts] [-approach | -cruise] ]\n");
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fprintf(stderr, " yasim <ac.xml> [-m]\n");
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fprintf(stderr, " -g print lift/drag table: aoa, lift, drag, lift/drag \n");
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fprintf(stderr, " -m print mass distribution table: id, x, y, z, mass \n");
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return 1;
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}
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@ -137,50 +137,50 @@ int main(int argc, char** argv)
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if(a->getFailureMsg())
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printf("SOLUTION FAILURE: %s\n", a->getFailureMsg());
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if(!a->getFailureMsg() && argc > 2 ) {
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if(strcmp(argv[2], "-g") == 0) {
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float alt = 5000, kts = 100;
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int cfg = CONFIG_NONE;
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for(int i=3; i<argc; i++) {
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if (std::strcmp(argv[i], "-a") == 0) {
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if(strcmp(argv[2], "-g") == 0) {
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float alt = 5000, kts = 100;
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int cfg = CONFIG_NONE;
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for(int i=3; i<argc; i++) {
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if (std::strcmp(argv[i], "-a") == 0) {
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if (i+1 < argc) alt = std::atof(argv[++i]);
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}
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else if(std::strcmp(argv[i], "-s") == 0) {
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else if(std::strcmp(argv[i], "-s") == 0) {
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if(i+1 < argc) kts = std::atof(argv[++i]);
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}
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else if(std::strcmp(argv[i], "-approach") == 0) cfg = CONFIG_APPROACH;
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else if(std::strcmp(argv[i], "-cruise") == 0) cfg = CONFIG_CRUISE;
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else return usage();
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}
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yasim_graph(a, alt, kts, cfg);
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}
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else if(strcmp(argv[2], "-m") == 0) {
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yasim_masses(a);
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}
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}
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else {
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printf("Solution results:");
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float aoa = a->getCruiseAoA() * RAD2DEG;
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float tail = -1 * a->getTailIncidence() * RAD2DEG;
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float drag = 1000 * a->getDragCoefficient();
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float cg[3];
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a->getModel()->getBody()->getCG(cg);
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a->getModel()->getBody()->recalc();
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else if(std::strcmp(argv[i], "-approach") == 0) cfg = CONFIG_APPROACH;
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else if(std::strcmp(argv[i], "-cruise") == 0) cfg = CONFIG_CRUISE;
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else return usage();
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}
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yasim_graph(a, alt, kts, cfg);
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}
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else if(strcmp(argv[2], "-m") == 0) {
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yasim_masses(a);
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}
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}
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else {
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printf("Solution results:");
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float aoa = a->getCruiseAoA() * RAD2DEG;
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float tail = -1 * a->getTailIncidence() * RAD2DEG;
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float drag = 1000 * a->getDragCoefficient();
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float cg[3];
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a->getModel()->getBody()->getCG(cg);
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a->getModel()->getBody()->recalc();
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float SI_inertia[9];
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a->getModel()->getBody()->getInertiaMatrix(SI_inertia);
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printf(" Iterations: %d\n", a->getSolutionIterations());
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printf(" Drag Coefficient: %f\n", drag);
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printf(" Lift Ratio: %f\n", a->getLiftRatio());
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printf(" Cruise AoA: %f\n", aoa);
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printf(" Tail Incidence: %f\n", tail);
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printf("Approach Elevator: %f\n", a->getApproachElevator());
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printf(" CG: x:%.3f, y:%.3f, z:%.3f\n\n", cg[0], cg[1], cg[2]);
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printf("Inertia tensor [kg*m^2], origo at CG:\n");
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[0], SI_inertia[1], SI_inertia[2]);
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[3], SI_inertia[4], SI_inertia[5]);
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[6], SI_inertia[7], SI_inertia[8]);
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}
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float SI_inertia[9];
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a->getModel()->getBody()->getInertiaMatrix(SI_inertia);
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printf(" Iterations: %d\n", a->getSolutionIterations());
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printf(" Drag Coefficient: %f\n", drag);
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printf(" Lift Ratio: %f\n", a->getLiftRatio());
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printf(" Cruise AoA: %f\n", aoa);
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printf(" Tail Incidence: %f\n", tail);
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printf("Approach Elevator: %f\n", a->getApproachElevator());
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printf(" CG: x:%.3f, y:%.3f, z:%.3f\n\n", cg[0], cg[1], cg[2]);
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printf("Inertia tensor [kg*m^2], origo at CG:\n");
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[0], SI_inertia[1], SI_inertia[2]);
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[3], SI_inertia[4], SI_inertia[5]);
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printf(" %7.3f, %7.3f, %7.3f\n", SI_inertia[6], SI_inertia[7], SI_inertia[8]);
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}
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delete fdm;
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return 0;
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}
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