Variable-Pitch Fan

Turboprop Blades • btHingeConstraint • Pitch Control • Lift Vectors • ArrowHelper • OBJ / GLB / STL

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Fan Geometry

Blade Count 5

Blade Length (cm) 20

Blade Chord (cm) 6

Blade Thickness (mm) 4

Hub Radius (cm) 5

Hub Depth (cm) 4

Blade Twist (°) 15

Material Aluminum

Rotation

Hub RPM 300

Motor Torque (N·m) 5.0

Pitch Control

Blade Pitch (°) 15

Pitch Rate (°/s) 60

Physics

Blade Mass (g) 50

Air Density (kg/m³) 1.225

Lift Coeff (Cl) 1.2

Gravity (m/s²) 0

Visualization

Show Lift Arrows On

Arrow Scale 1.0

Trail Off

Variable-Pitch Fan — 3D

RPM: 0 • Pitch: 0° • Total Lift: 0 N

Adjust RPM & pitch sliders in real-time

Live Metrics

Total Lift Force

0 N

Tip Speed

0 m/s

Current Pitch

15°

Per-Blade Lift

Low

High

Specifications

Blades	—
Blade Size	—
Hub	—
Material	—
RPM	—
Pitch	—
Tip Speed	—
Disc Area	—

Reference

Variable Pitch: Blades rotate on radial axis while hub spins
Angle of Attack: Blade pitch relative to rotation plane
Lift ∝ v² sin(α): Lift = ½ρv²·S·Cl·sin(α)
Tip Speed: v = ω × R = (RPM/60)·2π·R
Feathered: Pitch ≈ 90° → zero drag for engine-out

Export

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