Transcript 3D Printing as a Tool for Prototyping for Aerospace Engineering

3D printing as a tool for prototyping for
Aerospace Engineering Applications
Prof. Alison Flatau
Clark School of Engineering
Cyclocopter
Tail rotor mount
60 grams
Main fuselage frame
Landing gear
550 grams
Blade attachment
for pitching mechanism
Blade mold
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
Fuselage canopy
Landing gear
Rotor mount
250 grams
Capable of rotorcraft and fixed-wing mode
HIGH-SPEED
FORWARD FLIGHT
STABLE
HOVER
Flapping Wing MAV
Fuselage frame and gear box
65 gram (two wings)
Hover capable flapper
Insect-based mechanism
Landing gear joint
A.G. Rotorcraft Center, slides provided by Elena Shrestha
Flow sensor design
Adjustable holder to determine optimal configuration
Base
1st Generation
Slider
Clamp
4th Generation
Aerosmart Flow Sensor Research, slides provided by Ganesh Raghunath
Modified designs
2 HE sensor holder
Base of 2 piece holder
3 HE sensor holder
Top of 2 piece holder
Aerosmart Flow Sensor Research, slides provided by Ganesh Raghunath
Low speed flow sensor holder
1st Generation
2nd Generation
3rd 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
Glaucoma and asymmetric visual
field damage
Hypothesis is that if you have glaucoma, sleep
position can contribute to damage
Central
Threshold
Vision Test
(99%)
Left Eye
Central
Threshold
Vision Test
(84%)
Right Eye
Preliminary findings indicate eyes of glaucoma
patients respond to sleep-position induced
loads differently than healthy controls
Proposed mitigation approach:
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.
Disclaimer: International Application no. PCT/US11/54595
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