Press Space to cycle between different shapes: a wing, a rectangle and a circle. Add more shapes by entering the project and just drawing them if you want. Turbo mode HIGHLY recommended. vector display length: adjust the length of the pressure vector arrow. Altitude: adjust height from the ground, as this simulation takes into account ground effect, which can significantly increase lift. Direction: turns the object. Moving Avg N: the drawn pressure vector is stabilized using a moving average over the last N frames. This also means that when adjusting any slider values, the displayed vector takes a few seconds to stabilize. Scratch only allows for 300 particles for screen at once, while in real life there should be on the order of 10^22 air molecules around a small aircraft's wings. Display Pressure (toggle): the small red squares representing the particles are replaced with a blurred circle, to approximate the pressure at each point (within Scratch's limitations of course).
