UAVs&and&Addi2ve&Manufacturing&

Making&a&drone&with&a&lowOend&3D&printer&

Growndrones.com&

&

The&Printer&

The&Design&•  1m&span,&wing&area&=&1240&cm2&&

•  Ellip2cal&planform,&blended&airfoil&– Selig&S4022&root,&Wortmann&FX60126&2p&

Advantages&of&3D&Prin2ng&

•  PrintedOin:&– Servo&bays&– Hinges&– Spar&channels&– Wiring&conduits&

•  Nearly&zero&labor!&

Disadvantages&

•  Long&print&2mes&

•  Current&lowOend&printers&not&completely&reliable&

•  Weight&–&hard&to&make&parts&as&light&as&wood&– GDO1&wing&loading:&6.4&kg/m2&or&21&oz/i2&

How&does&it&work?&

•  CNC&Extruder&lays&down&a&‘bead’&of&melted&plas2c,&0.2mm&wide&

& 2&“shells”&

Honeycomb&“fill”&(10%)&

Spar&tube&

Conclusion&

•  Very&promising&but:&– Need&a&more&accurate&&&reliable&machine&

– Need&*much*&bigger&build&volume&

– Need&lighter&and&stronger&materials&