DroneMaster
Wind Tunnel Simulator
Ma 0.000
Re —
Low pressureHigh pressure
Lift coeff. CL
—
Drag coeff. CD
—
L/D ratio
—
Lift force
— kN
Drag force
— kN
Wing loading
— kg/m²
Dynamic pressure
— Pa
Thrust/weight
—
Aspect ratio
—
Wind dynamics explained
⇓ Full history & designer's guide (PDF)
CL vs angle of attack
Drag polar — CD vs CL
L/D ratio vs angle of attack
Lift
Air accelerates over the curved upper surface, dropping pressure (Bernoulli). Higher pressure below pushes the wing up. L = CL × ½ρV²S.
Drag
Skin friction drag + pressure drag from the separated wake. Near Mach 1, wave drag adds a third component. Minimising drag is the primary goal of aerodynamic design.
Angle of attack
Raising AoA increases lift — until the boundary layer separates and the wing stalls. Typical stall: 12–18° depending on airfoil shape, sweep, and Reynolds number.
Reynolds number
Re = ρVL/μ. Governs laminar vs turbulent boundary layers. Scale models in a tunnel have lower Re than full-size aircraft — the core accuracy challenge of wind tunnel testing.