public static Vector CalculateHohmannJump(Vector pos, Vector v, double targetR)
{
var r = pos.Len();
var desirableV = Math.Sqrt(2 * mu * targetR / (r * (r + targetR)));
return(v - GetTangentVector(pos, desirableV));
}
public static Orbit CalculateOrbit(Vector pos, Vector v)
{
double alpha = pos.PolarAngle;
double beta = v.PolarAngle;
double vAngle = Math.PI/2 - (alpha - beta);
double vr = v.Len()*Math.Sin(vAngle);
double vt = v.Len()*Math.Cos(vAngle);
double H = vt*pos.Len();
double theta = Math.Atan2(vr, vt - mu/H);
double orbitAngle = -(theta + alpha - Math.PI);
double a = (mu*pos.Len())/(2*mu - v.Len2()*pos.Len());
double e = vr/(mu*Math.Sin(theta)/H);
double b = a*Math.Sqrt(1 - e*e);
//SolverLogger.Log("H = " + H);
return new Orbit {SemiMajorAxis = a, SemiMinorAxis = b, TransformAngle = orbitAngle};
}
public static Orbit CalculateOrbit(Vector pos, Vector v)
{
double alpha = pos.PolarAngle;
double beta = v.PolarAngle;
double vAngle = Math.PI / 2 - (alpha - beta);
double vr = v.Len() * Math.Sin(vAngle);
double vt = v.Len() * Math.Cos(vAngle);
double H = vt * pos.Len();
double theta = Math.Atan2(vr, vt - mu / H);
double orbitAngle = -(theta + alpha - Math.PI);
double a = (mu * pos.Len()) / (2 * mu - v.Len2() * pos.Len());
double e = vr / (mu * Math.Sin(theta) / H);
double b = a * Math.Sqrt(1 - e * e);
//SolverLogger.Log("H = " + H);
return(new Orbit {
SemiMajorAxis = a, SemiMinorAxis = b, TransformAngle = orbitAngle
});
}
public static Vector CalculateHohmannJump(Vector pos, Vector v, double targetR)
{
var r = pos.Len();
var desirableV = Math.Sqrt(2 * mu * targetR / (r * (r + targetR)));
return v - GetTangentVector(pos, desirableV);
}
public static Vector GetTangentVector(Vector pos, double v)
{
return new Vector(v * pos.y / pos.Len(), -v * pos.x / pos.Len());
}
public static Vector GetTangentVector(Vector pos, double v)
{
return(new Vector(v * pos.y / pos.Len(), -v * pos.x / pos.Len()));
}
