double _contact_x1_offset, _contact_x2_offset, _contact_z_offset;
double _pitch, _pitch_coeff, _pitch_deg;
double _speed_coeff, _speed_kt;
double _contact_x1_offset, _contact_x2_offset, _contact_z_offset;
double _pitch, _pitch_coeff, _pitch_deg;
double _speed_coeff, _speed_kt;