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Phoenix-MCAD

This respository contains all the mechanical design documents and a bill of materials (BOM) for construction of a Phoenix Tailsitter.

BOM

A Live BOM of all the off-the-shelf documents currently used in the Phoenix project to construct one unit of the vehicle is provided here.

Overall STEP File

This STEP file contains the CAD design of the overall vehicle, defining the shape of the wing and the interconnection mechanism between wings, mounting plate, landing gears, etc. Import this STEP file into any preferred CAD software to inspect the shape and dimensions in detail, or to modify the design to suit specific needs.

3D printing STL Files

We also provide default CAD model (.stl) files which are ready to be 3D printed. This allows you to directly print all the necessary components needed for assembly without modifying the CAD design. These files are located in the subfolders of this repository.

Wing Core Casting

To make a rigid (crash-proof) yet light wing, we decided to use 2lb/cu-ft. polyurahene foam for casting the wing core. The procedure is as follows:

  • Print out the 3D-printed molds in the WingCore_Mold folder (due to the volume constraint of our printer, the mold is divided into four parts and joined together by Align_Pins)
  • Apply a thin layer of body filler (such as epoxy or bondo) to fill the gaps between filament layers
  • Sand the surface to be as smooth as possible until the surface is almost reflective
  • Apply one layer of mold release (extremely important!) over the mold (including the flash surface)
  • Mix an appropriate amount of foam and follow the casting instructions of your foam (we use 20ml of component A and B each for one side of the wing core)

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Mechanical CAD files for construction of Phoenix Tailsitter

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