Mechanical parts
2-Wing Flapping-Wing MAV Assembly
- Bounding box
- 200.0 × 600.0 × 353.9 mm
- Engine
- Precision B-rep
- Parameters
- 38
- Published
- October 2, 2026
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The prompt
Create a parametric CAD model of a 2-wing FWAV. Do not redesign dimensions; flag inconsistencies. BODY: 200×80×50 mm, origin at centre. +X forward, +Y left, +Z up. Wing hinge axes: Y=±50 mm. Root spacing=100 mm. WINGS: 600 mm total neutral span. Each wing: 250 mm hinge-to-tip, 120 mm root chord, 60 mm tip chord, taper=0.5, area=22,500 mm², total area=45,000 mm², AR=5.56. Straight tapered planform. Identical mirrored wings. Root block=45×25×8 mm. Hinge axis yw=0, zw=0. Root leading edge X=+30 mm; trailing edge X=−90 mm. MATERIAL: PET membrane 25 µm, 34.8 g/m², flat/no pretension. 5 mm trailing/tip hems. Main CFRP spar Ø2×255 mm, xw=1 mm. Secondary CFRP spar Ø1×236 mm. Root doubler 15×120 mm; leading-edge doubler 8 mm. Root block thickness=1.2 mm. FLAPPING: 5 Hz, operating range 3–8 Hz. Neutral 0°, operating ±30°, peak-to-peak 60°. Must clear all components at ±45°. Output=300 RPM assuming 1 revolution=1 flap cycle. Peak angular velocity=16.45 rad/s. Peak angular acceleration=517 rad/s². Peak tip speed=4.11 m/s. Tip vertical travel=250 mm. MASS: Target=200 g; allowed 150–250 g. Each wing=5.5 g target, max 8 g. MOTORS: 2 independent 6 V DC motors, 2000 RPM no-load, ~1800 RPM loaded. Reduction=6:1, allowable 5–6.7:1. Motor envelope=55×30×30 mm. Left motor=(-30,+18,+10) mm. Right motor=(-30,−18,+10) mm. CG: (+7,0,10 mm below flapping axis), X tolerance ±5 mm, Y ±2 mm, Z 5–20 mm below axis. CAD: Create body, mirrored wings, spars, membrane, root blocks, hinge axes, motor envelopes and CG marker. Show neutral, ±30° and ±45° positions. Perform interference/clearance check. Perform geometry and mass consistency check. Do NOT invent missing §22 coordinates. If any number is inconsistent, FLAG it instead of changing it.
Parameters
| Name | Value | Range |
|---|---|---|
| Fuselage length (X) | 200 mm | 100 – 400 |
| Fuselage width (Y) | 80 mm | 40 – 160 |
| Fuselage height (Z) | 50 mm | 20 – 120 |
| Hinge axis Y offset | 50 mm | 10 – 100 |
| Wing hinge-to-tip span | 250 mm | 100 – 500 |
| Root leading edge X | 30 mm | -100 – 100 |
| Root chord | 120 mm | 40 – 300 |
| Tip chord | 60 mm | 20 – 200 |
| PET membrane thickness | 0.03 mm | 0.01 – 1 |
| Trailing/tip hem width | 5 mm | 0 – 20 |
| Doubler bond thickness | 0.05 mm | 0.02 – 1 |
| Root doubler span (15 x 120) | 15 mm | 5 – 60 |
| Leading-edge doubler width | 8 mm | 2 – 30 |
| Main CFRP spar diameter | 2 mm | 0.5 – 6 |
| Main spar length | 255 mm | 50 – 400 |
| Main spar aft of LE | 1 mm | 0 – 20 |
| Secondary spar diameter | 1 mm | 0.5 – 4 |
| Secondary spar length | 236 mm | 50 – 400 |
| Secondary spar chord fraction | 0.35 ratio | 0.1 – 0.9 |
| Root block length (X) | 45 mm | 10 – 120 |
| Root block width (Y) | 25 mm | 10 – 100 |
| Root block thickness (Z) | 8 mm | 2 – 40 |
| Root block X centre | -30 mm | -120 – 60 |
| Hinge axis rod diameter | 6 mm | 1 – 20 |
| Hinge axis rod length | 70 mm | 20 – 200 |
| Hinge axis rod X centre | -30 mm | -120 – 60 |
| Motor envelope length (X) | 55 mm | 10 – 150 |
| Motor envelope width (Y) | 30 mm | 10 – 100 |
| Motor envelope height (Z) | 30 mm | 10 – 100 |
| Motor centre X | -30 mm | -120 – 60 |
| Motor centre |Y| | 18 mm | 0 – 60 |
| Motor centre Z | 10 mm | -40 – 60 |
| CG marker X | 7 mm | -80 – 80 |
| CG marker Y | 0 mm | -40 – 40 |
| CG marker Z (below axis) | -10 mm | -50 – 50 |
| CG marker diameter | 6 mm | 1 – 20 |
| Flap position indicator angle | 45 deg | 0 – 60 |
| Flap indicator panel thickness | 0.5 mm | 0.1 – 5 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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