def METHOD_NAME(self):
    for comp in self.comps:
        geom_type = self.vsp_model.GetGeomTypeName(comp)
        if geom_type == "Wing":
            sref_id = self.vsp_model.FindParm(comp, "TotalArea", "WingGeom")
            Sref = self.vsp_model.GetParmVal(sref_id)
            bref_id = self.vsp_model.FindParm(comp, "TotalProjectedSpan", "WingGeom")
            bref = self.vsp_model.GetParmVal(bref_id)
            cref_id = self.vsp_model.FindParm(comp, "TotalChord", "WingGeom")
            cref = self.vsp_model.GetParmVal(cref_id)
            return Sref, bref, cref
    return 100.0, 1.0, 1.0