Biplane

: A Soviet biplane famous for its role as a nighttime harassment bomber, operated by the "Night Witches".

: The primary disadvantage is increased aerodynamic drag caused by the interference between the two wings and the necessary external bracing (struts and wires), which limits maximum speeds. Historical Significance biplane

: Advances in materials and the demand for higher speeds led to the monoplane's dominance by the late 1930s. Modern Applications : A Soviet biplane famous for its role