This repository contains the 2D patterns for constructing Airpup as well as a corresponding 3D model. 2D patterns are made with QCAD, the 3D model was made in Audodesk's Fusion 360.

See more of my kite and balloon projects at headfullofair.com.

• /rails, belly mounting rails and STLs
• BOM.ods, Bill of Materials
• V3-FIN.DXF, panel diagram of the fin/wing structure and attachment
• V3-ENVELOPE.DXF, flat pattern of the balloon envelope
• 72in-Airpup-model-v3.f3z/step/iges, full-size 3D Airpup- Envelope is accurate in size, volume, and seam locations, fins are illustrative.

Fin and envelope flat patterns have a series of rounded-rectanges that correspond to the glued interconnections joining the sewn fins and envelope.

airpup-assembly.md contains instructions on sewing Airpup.

The envelope is a 3-gore pattern seamed in a single run:

Airpup's envelope volume is roughly equivalent to a sphere whose radius is 1/3 the length of an inflated Airpup.

Airpup's flat envelope pattern is 1.147 times the length of an inflated Airpup.

The folder /rails contains CAD files and STLs for end caps and two-part slide mount. This mount allows easy weight adjustment and also can be removed from the belly of the balloon through four patches

• Use the 3D models to plan your payload attachement. Please reach out and share.
• Fork this repository and improve the design or documentation.
• Add or comment on issues in this repository.
• show me kite and balloon stuff.

All contributors are asked to abide by the code of conduct.

Licensed under the CERN OHL 1.2.