Balancer—A plane or other part intended for lateral equilibrium.
Bearing Block—Used in connection with the mounting of propellers on model aëroplanes. Made from wood and metal.
Brace—Strip of bamboo or other material used to join together the frame side members. Also used in joining other parts of a model.
Biplane—An aëroplane or model aëroplane with two wings superposed.
Body—The main framework supporting the wing or wings and the machinery.
Banking—The lateral tilting of an aëroplane when taking a turn.
C
Camber—The rise of the curved contour of an arched surface above the Chord Line.
Center of Gravity—The point at which the aëroplane balances.
Center of Pressure—The imaginary line beneath the wing at which the pressure balances.