What effect does wash-in the left wing of a monoplane have on lift and drag?

Wash-in refers to the design feature where the angle of incidence on one wing is increased compared to the other wing. In the case of a monoplane with wash-in on the left wing, this change has specific aerodynamic effects.

When wash-in is applied to the left wing, it effectively increases the angle of attack for that wing. As a result, the increased angle of attack leads to greater lift generation on the left wing. This additional lift occurs because the airflow over the wing surface is altered, enhancing the wing's ability to redirect air downwards, which in turn produces lift according to Bernoulli's principle and Newton's third law of motion.

On the other hand, the effect on drag is a bit more nuanced. While an increase in angle of attack typically generates more lift, it can also increase drag due to the formation of a larger wake and increased pressure drag. However, in this context, it is understood that the drag increase is not as significant as the lift increase. Therefore, in many cases, particularly at lower angles of attack and within the limits of efficiency of the wing design, the drag can be perceived as decreasing when considering the operational efficiency of the aircraft during specific maneuvering scenarios.

Hence, the correct statement recognizes the disparity