Aerospace Engineering

Aerodynamics

This guide helps you get your bearings in Aerodynamics before you start exploring the interactive timeline, framework graph, and concept maps.

Before You Dive In

The field splits between low-speed (incompressible) and high-speed (compressible) flow — most everyday intuitions only apply to the former.
Potential flow theory → boundary layer theory → computational fluid dynamics (CFD) is roughly the historical arc.
Wind tunnel testing and CFD are complementary, not competing approaches.
Understanding lift requires circulation theory, not the popular "longer path on top" explanation.

Reynolds numberDimensionless ratio of inertial to viscous forces; determines whether flow is laminar or turbulent.

Boundary layerThin region near a surface where viscous effects dominate.

Mach numberRatio of flow speed to speed of sound; defines subsonic, transonic, and supersonic regimes.

CirculationNet rotation of flow around an airfoil; directly proportional to lift.

DragForce opposing motion, from both pressure differences (form drag) and skin friction.

The "equal transit time" explanation of lift (air must travel faster over a curved wing) is a myth.

Assuming turbulence is always bad — turbulent boundary layers actually resist separation better than laminar ones.

Treating aerodynamics as pure theory — it's deeply empirical, with wind tunnel data correcting analytical models constantly.

Open the interactive view and scan the framework timeline. Which frameworks came first? Which ones overlap? Where are the big transitions?

Click into individual frameworks to read what each one claims, where it came from, and how it relates to its neighbors.

See how the key ideas within a framework connect. This is useful for figuring out what to learn first and what depends on what.

Take the quiz for any framework you've read about. It's a quick way to find out whether you actually understood the core ideas or just skimmed them.