G1 and G7 drag models

G1 and G7 drag models are mathematical methods used to predict how objects move through a fluid, like air or water. The G1 model uses a simple, universal formula to estimate resistance (drag) based on an object's shape and speed, suitable for smooth, streamlined shapes. The G7 model is more advanced, accounting for complex flow behaviors and turbulent turbulence effects, providing more accurate predictions for irregular or non-symmetrical objects. Both models help engineers design vehicles, ships, and aircraft by estimating how much force opposes their movement, ensuring better performance and safety.