Printable structure
Rev 2 body sections and split wings, with CAD files supplied in editable STEP format.
Peregrine · Open-source engineering
A 7-inch VTOL FPV design, shared openly.
An open-source quad tail-sitter combining 3D-printed airframe design, modelled wiring and ArduPilot configuration. Designed to lift off vertically, then transition to wing-borne flight.
VTOL FPV3D-printed airframeSTEP CAD
Project status
CAD complete; first build and flight tests pending.
7-inchPropeller format
About 460 mmDesign length
4 motorsQuad tail-sitter
Design, document, share
CAD, electronics and software in one project.
The larger Peregrine pairs a tapered nose, swept canards and four aerofoil wings with removable electronics access. Its Rev 2 body uses twist-lock joints to make the design practical to print and service.
An external-flow CFD study of the outer shape estimated 9.9 N of drag at the 200 km/h design target. This is a simulation result, not a measured flight speed. The ArduPilot configuration has not been flight-tested.
Developed with CAD and AI-assisted design tools, and shared for hobby makers to study and develop. Both versions are unbuilt designs awaiting physical validation.
Inside the design
Practical details, openly documented.
Modelled wiring
Colour-coded cable routes and a documented bill of materials built around hobby components.
Flight software
ArduPilot ArduPlane configuration and setup documentation for the quad tail-sitter layout.
Simulation study
Published airflow results at the forward-flight design target, with the assumptions documented.
The Peregrine family
Two sizes. One design approach.
| Design | Peregrine | Peregrine Mini |
|---|---|---|
| Propellers | 7-inch | 5-inch |
| Length | About 460 mm | About 265 mm |
| Body | 100 mm diameter | 70 mm diameter |
| Battery specification | 6S 2200 mAh | 6S 1300 mAh |
| Printing | Rev 2 parts designed for a 250 mm printer | Printed parts designed for a 256 mm printer |
| Status | CAD complete; first build and flight tests pending. | CAD design only; not yet printed or flown. |
Open project files
Explore the design and its documentation.
The public repository contains STEP design files, renders, a bill of materials and wiring notes. Hardware and documentation are shared under CC BY-SA 4.0; see the repository for software licences and current design limitations.