sm->contents_node = fgGetNode(entry_node->getStringValue("contents", "none"), false);
sm->speed_node = fgGetNode(entry_node->getStringValue("speed-node", "none"), false);
sm->submodel = entry_node->getStringValue("submodel-path", "");
sm->contents_node = fgGetNode(entry_node->getStringValue("contents", "none"), false);
sm->speed_node = fgGetNode(entry_node->getStringValue("speed-node", "none"), false);
sm->submodel = entry_node->getStringValue("submodel-path", "");