USI Drones Course Practice Test

When airspeed over a wing increases, the static pressure on the wing surface decreases. Faster flow means more air energy is going into speed rather than pressure, and Bernoulli’s principle describes this trade-off. The lower pressure on the upper surface, compared with the pressure on the lower surface, creates a net upward force—lift. So increasing speed leads to a drop in pressure, not a rise, and that pressure difference is what generates lift. In real airflow there can be small variations due to turbulence, but the overall trend is a decrease in static pressure with higher speed.