+ SGPropertyNode *node = fgGetNode(branch.c_str(), _num, true );
+ _serviceable_node = node->getChild("serviceable", 0, true);
+ _pressure_node = fgGetNode(_static_pressure.c_str(), true);
+ _speed_node = node->getChild("indicated-speed-fpm", 0, true);
+ _speed_up_node = fgGetNode("/sim/speed-up", true);