def __init__(self, tag, geom_type='Broken', n_sect=20):
"""
Constructor: set main attributes
"""
self.__tag = tag
self.__geom_type = None
self.__n_sect = None
self.__PCADModel = None
self.__BC_manager = None
self.__distrib_type = 'cos_law'
self.set_geom_type(geom_type)
self.set_n_sect(n_sect)
self.__BC_manager = BCManager()
self.__ndv = 0
self.__thetaY = None
self.__AoA_id = 'AoA'
self.__init_discrete_attributes()
self.__init_airfoils_attributes()
