Free aerodynamics simulator tool
Airfoil Simulator lets you change angle of attack, speed, wing area, density, and airfoil shape so you can see why lift rises at first and why high angles can lead to stall.
Built for browser-based aerodynamics practice, classroom demos, and shareable airfoil results.
Start Airfoil Simulator here. Move the controls, watch the streamlines, and compare lift, drag, lift-to-drag ratio, coefficient changes, and stall risk in real time.
Adjust one input at a time to see how angle of attack, air speed, area, density, and airfoil shape change the estimate.
Share the clean page or copy a result link with the current airfoil settings.
Live airflow
Blue streamlines show mostly attached flow. Orange swirls appear as the angle approaches the simplified stall region.
Lift
-- N
Drag
-- N
Lift-to-drag
--
Stall risk
--%
Lift coefficient
--
Drag coefficient
--
Dynamic pressure
-- Pa
Airfoil Simulator uses simplified lift and drag coefficient curves for learning. It is not a CFD solver or aircraft certification tool.
Airfoil Simulator turns core aerodynamic inputs into a visual airfoil estimate so lift, drag, and stall behavior are easier to compare.
Set angle of attack, speed, area, density, and shape, then use Airfoil Simulator to watch how streamlines move around the airfoil.
Increase angle of attack in Airfoil Simulator to see why lift rises at first, then becomes less efficient when airflow separates.
Use this Airfoil Simulator guide to build a clear first case and understand what each aerodynamic control changes.
Start near 6° to 8° angle of attack with sea-level density and a moderate air speed so the airflow stays mostly attached.
Move the angle slider upward and watch lift increase, drag rise, and the stall risk badge change as flow separation becomes likely.
Copy a result link only when you want to preserve the current airfoil shape, speed, area, density, and angle settings.
Airfoil Simulator keeps the controls, airflow sketch, and core aerodynamic metrics visible together.
Watch simple flow lines bend around the wing and become disturbed near the simplified stall region.
Read lift, drag, lift-to-drag ratio, lift coefficient, drag coefficient, and dynamic pressure as inputs change.
Jump between safe-lift and stall demo settings to compare attached and separated airflow behavior.
Airfoil Simulator is useful when you need a quick browser explanation of lift, drag, angle of attack, and stall risk.
Show why angle of attack matters before moving into equations or wind-tunnel data.
Compare broad airfoil shapes and wing area changes before using a more detailed aerodynamic tool.
Move from moderate to high angles and connect the numbers to the airflow sketch.
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Fast answers before you use Airfoil Simulator for learning, demos, or early design thinking.
Airfoil Simulator estimates lift, drag, lift-to-drag ratio, lift coefficient, drag coefficient, dynamic pressure, and stall risk from angle of attack, air speed, wing area, density, and a simplified airfoil shape.
Airfoil Simulator raises stall risk when the selected angle approaches the simplified stall region, where airflow separation can reduce lift efficiency and increase drag.
No. Airfoil Simulator is an educational approximation. Use wind-tunnel data, validated airfoil polar data, or CFD tools for engineering decisions.
Yes. Airfoil Simulator keeps the clean page URL while you experiment, and the copy result link button creates a shareable URL only when you choose it.
Open Airfoil Simulator, adjust the angle of attack, and watch lift, drag, lift-to-drag ratio, and stall risk update in your browser.
Free to use and no download required.