3D printing as a tool for prototyping for Aerospace Engineering Applications Prof. Alison Flatau Clark School of Engineering

Cyclocopter Main fuselage frame Blade attachment for pitching mechanism 550 grams 60 grams Landing gear Blade mold Tail rotor mount A.G. Rotorcraft Center, slides provided by Elena Shrestha

Optimized Quadrotor 3-D printed hubs for various carbon fiber rotor designs used on vehicle 3-D printed gear box 44 grams Endurance: 30 mins A.G. Rotorcraft Center, slides provided by Elena Shrestha

Optimized Quadrotor Conducted parametric studies using hundreds of 3-D printed rotors A.G. Rotorcraft Center, slides provided by Elena Shrestha

Quadrotor Biplane 250 grams Capable of rotorcraft and fixed-wing mode Landing gear Fuselage canopy Rotor mount STABLE HOVER HIGH-SPEED FORWARD FLIGHT

Flapping Wing MAV 65 gram (two wings) Hover capable flapper Insect-based mechanism Landing gear joint Fuselage frame and gear box A.G. Rotorcraft Center, slides provided by Elena Shrestha

Flow sensor design BaseSliderClamp 1 st Generation4 th Generation Aerosmart Flow Sensor Research, slides provided by Ganesh Raghunath Adjustable holder to determine optimal configuration

Modified designs 2 HE sensor holder Base of 2 piece holder Top of 2 piece holder 3 HE sensor holder Aerosmart Flow Sensor Research, slides provided by Ganesh Raghunath

Low speed flow sensor holder 1 st Generation 2 nd Generation 3 rd Generation Aerosmart Flow Sensor Research, slides provided by Ganesh Raghunath

Wind Tunnel Set-Up 508mm U U Jones Aerodynamics Lab, slides provided by Vera Klimchenko

3D Printing a Mold 12 parts made in about 8 hours They can all be printed at the same time Collective Dynamics and Control Laboratory, slides by Frank Lagor

3D Printing a Mold Collective Dynamics and Control Laboratory, slides by Frank Lagor

BioEngineering Capstone Design Project: 3-D printing for custom-fit protective sleep masks Prof. Alison Flatau Clark School of Engineering

Right Eye Left Eye Central Threshold Vision Test (99%) Central Threshold Vision Test (84%) Glaucoma and asymmetric visual field damage Hypothesis is that if you have glaucoma, sleep position can contribute to damage

Preliminary findings indicate eyes of glaucoma patients respond to sleep-position induced loads differently than healthy controls

Proposed mitigation approach: Disclaimer: International Application no. PCT/US11/54595 A protective sleep mask that provides an alternative load path to prevent eye deformation &/or avoid a change in outflow resistance during non-supine sleep positions.

BioE Capstone Design team developing custom-fit 3-D designs Working with Direct Dimensions to understand use of 3-D scanning to identify critical facial dimensions for proper fit

BioE Capstone Design team developing custom-fit 3-D designs Scanned 3-D image from Direct Dimensions was used to extrude a mask interface as an *.stl file for printing. UMD Startup Shell produced a 3-D custom fit prototype using PLA that is a perfect match to contours of the face (Thank you Maggie Prendergast, TJ Root and Tony Ingelido!)

BioE Capstone Design team developing custom-fit 3-D designs Establishing material requirements Establishing fit requirements Establishing manufacturing options  Custom 3-D printed liners used with standard size S/M/L plastic shells  Custom 3-D printed plastic shell used with standard size S/M/L liners  Both shell and liner need to be custom fit