This is a complete 3D-printable hybrid VTOL fixed-wing UAV airframe package developed for additive manufacturing, UAV prototyping, engineering projects, advanced RC builds, and educational applications.

Following the release of the original CAD version and feedback from builders, the design has been developed into a complete printable package with separated STL components, editable CAD files, manufacturing information, and detailed assembly documentation.

The aircraft uses a 4+1 lift-and-cruise configuration with four dedicated VTOL lift motors and a rear pusher motor for efficient fixed-wing flight.

The airframe has a modular semi-monocoque construction with carbon-fiber structural reinforcement. Wings, fuselage sections, VTOL motor supports, tail components and other major parts are separated for manufacturing, assembly, transportation and maintenance.

Aircraft Specifications

• Configuration: Hybrid VTOL / Fixed Wing, 4+1
• Wingspan: 2600 mm
• Fuselage length: 1700 mm
• Fuselage width: 215 mm
• Fuselage height: 140 mm
• Wing root chord: 298 mm
• Wing tip chord: 126 mm
• Wing dihedral: 4°
• Wing incidence: +2°
• Washout: 2–2.5°
• Modular wing construction
• Carbon-fiber reinforced airframe
• Removable wing and fuselage sections

Package Includes

• Separated 3D-printable STL files
• STEP CAD files
• Native SolidWorks parts and assembly files
• Detailed 18-page Assembly and Manufacturing Manual
• Bill of Materials and hardware information
• Carbon-fiber structural specifications
• Printing recommendations
• Electronics and propulsion recommendations
• VTOL assembly information
• Wing and fuselage assembly instructions
• ArduPilot QuadPlane setup reference
• Reference images

The included CAD files allow the platform to be modified for different cameras, avionics, electronics and project-specific equipment.

Structural Design

The primary wing structure uses carbon-fiber spars integrated into the printed airframe. Printed sections provide the aerodynamic shell and local structure while carbon-fiber members reinforce the primary load paths.

The modular construction allows individual components to be manufactured and replaced independently without requiring the entire airframe to be reproduced.

Electronics Integration

The internal fuselage provides space for commonly used UAV electronics including flight controller, GPS/compass, receiver, telemetry equipment, power module, battery, ESCs and associated wiring.

The documentation includes recommendations for ArduPilot-compatible flight controllers and a traditional 4+1 QuadPlane configuration.

Applications

• UAV prototyping and development
• Additive manufacturing projects
• Aerospace and engineering education
• Advanced RC aircraft projects
• Flight-control integration
• Mapping and survey platform development
• CAD customization
• Research and university projects
• Airframe design studies

This is a digital engineering and manufacturing package. Electronics, motors, carbon-fiber components and other physical hardware are not included.

Final component selection, aircraft weight, propulsion sizing, control setup and flight testing remain the responsibility of the builder.