namespace yasim {
class Gear;
+class Hook;
+class Launchbar;
class Thruster;
class Airplane {
float taper=1, float mid=0.5);
int addTank(float* pos, float cap, float fuelDensity);
void addGear(Gear* g);
+ void addHook(Hook* h);
+ void addLaunchbar(Launchbar* l);
void addThruster(Thruster* t, float mass, float* cg);
void addBallast(float* pos, float mass);
int numGear();
Gear* getGear(int g);
+ Hook* getHook();
+ Launchbar* getLaunchbar();
int numThrusters() { return _thrusters.size(); }
Thruster* getThruster(int n) {