_heading_in_node = fgGetNode("/orientation/heading-deg", true);
_suction_node = fgGetNode(_suction.c_str(), true);
_heading_out_node = node->getChild("indicated-heading-deg", 0, true);
_heading_bug_error_node = node->getChild("heading-bug-error-deg", 0, true);
_heading_bug_node = node->getChild("heading-bug-deg", 0, true);
_heading_in_node = fgGetNode("/orientation/heading-deg", true);
_suction_node = fgGetNode(_suction.c_str(), true);
_heading_out_node = node->getChild("indicated-heading-deg", 0, true);
_heading_bug_error_node = node->getChild("heading-bug-error-deg", 0, true);
_heading_bug_node = node->getChild("heading-bug-deg", 0, true);