Parametric UAV Design in Fusion 360 + OpenVSP
Design a drone from requirements to 3D model with aero analysis
Last reviewed: March 2026Overview
Designing an aircraft — even a small UAV — is one of the most satisfying engineering challenges. It requires balancing competing requirements: payload capacity vs. endurance, structural strength vs. weight, stability vs. maneuverability.
Professional aircraft design uses a two-tool workflow: a parametric analysis tool for rapid trade studies (changing wing area, aspect ratio, taper in seconds) and a detailed CAD tool for manufacturing-ready geometry. In this project, you'll use OpenVSP (NASA's open-source parametric aircraft design tool) and Fusion 360 (Autodesk's cloud CAD platform) together.
You'll start with a mission requirement (e.g., a surveillance UAV that must carry a 2 kg camera for 90 minutes) and work through the full preliminary design process to a detailed 3D model.
What You'll Learn
- ✓ Define UAV mission requirements and translate them into design parameters
- ✓ Use OpenVSP to create parametric aircraft geometry and run aerodynamic analysis
- ✓ Perform trade studies varying wing area, aspect ratio, and tail sizing
- ✓ Export geometry and build a detailed CAD model in Fusion 360
- ✓ Understand the relationship between aircraft geometry and performance
- ✓ Create a design report documenting requirements, trade studies, and final configuration
Step-by-Step Guide
Define Mission Requirements
Write a one-page mission specification: what the UAV must do, how far/long it must fly, what payload it carries, and any constraints (runway length, max wingspan, regulations).
Example: A fixed-wing surveillance UAV carrying a 2 kg EO/IR camera pod, 90-minute endurance at 25 m/s cruise speed, hand-launched, max wingspan 2.5 m.
Initial Sizing in OpenVSP
Download OpenVSP and create your initial configuration: fuselage, wing, horizontal tail, vertical tail. Use the parametric sliders to set wing area, aspect ratio, taper ratio, and sweep.
Start with historical data: most small surveillance UAVs have aspect ratios of 8–12 and wing loadings of 50–100 N/m². Use these as starting points.
Run Aerodynamic Analysis
Use OpenVSP's built-in VLM (Vortex Lattice Method) or Panel Method to analyze your design. Generate lift and drag data at your cruise condition. Check that your design achieves the required L/D for the endurance requirement.
Use the Breguet endurance equation to verify: E = (L/D) × (1/SFC) × ln(W_initial/W_final). Does your design meet 90 minutes?
Perform Trade Studies
Vary key parameters systematically and document how they affect performance:
- Aspect ratio (6 to 14): higher = less induced drag, but heavier wing structure
- Wing area: larger = lower wing loading (easier launch), but more drag
- Tail volume coefficient: affects stability margins
Create plots showing the trade-offs. Pick the best compromise for your mission.
Build Detailed CAD in Fusion 360
Export your final OpenVSP geometry as a STEP or IGES file. Import into Fusion 360 and add internal structure: wing spars, ribs, fuselage formers, servo mounts, and camera bay.
Use Fusion 360's sheet metal tools for carbon fiber layup planning, or solid modeling for 3D-printed components. Design for the manufacturing method you'd actually use.
Create the Design Report
Write a professional design report including: mission requirements, configuration selection rationale, aerodynamic analysis results, trade study plots, 3D renderings, weight breakdown, and performance summary.
This is the format used in AIAA Design/Build/Fly competition reports and professional PDR (Preliminary Design Review) packages.
Career Connection
See how this project connects to real aerospace careers.
Aerospace Engineer →
Aircraft preliminary design — from requirements to configuration — is a core discipline at every aerospace company
Drone & UAV Ops →
Understanding UAV design trade-offs helps operators select the right platform and push its capabilities to the limit
Aerospace Manufacturing →
Design for manufacturing is a critical skill — the CAD work in this project directly applies to production engineering
Aviation Maintenance →
Understanding aircraft structure and design intent makes maintenance engineers better at diagnosing and repairing
Go Further
Continue your aircraft design journey:
- Build it — use the Fusion 360 model to 3D-print or laser-cut your UAV and test fly it
- Add FEA — use Fusion 360's simulation tools to analyze wing spar stress under flight loads
- Multidisciplinary optimization — write a Python script that automatically varies OpenVSP parameters to find the optimal design
- Enter AIAA DBF — use this workflow for your university's Design/Build/Fly competition entry