Flapping Wing MAV Group 13 – NASA Ames Parker Cook George Heller Joshua Nguyen Brittney Theis

The Customer - Dr. Shih - Funding to be provided by the NASA Ames facility

The Problem - We are tasked with designing and building a flapping-wing micro aerial vehicle (MAV) that is constrained by certain specifications provided by the customer and inspired by the European Micro Air Vehicle Conference and Flight Competition.

Project Scope and Needs OperationSpecification Flight Type Flapping Wing Flight Time 10mins Ground Clearance 5m Flight Distance 50m Degrees of Freedom 3 Size Specifications 10cm x 10cm x 10cm Weight100g Ease of Operation 1 user

Original Design –2 Flapping Wings –Controlled rotation of the wings –The wings use a track to slide back and forth –DC Motor rotating causes the wings to flap

Dragon Fly Inspired –2 sets of wings in an collapsing/expanding X formation in an up and down movement –Tail rotor –DC Motor rotating –A larger toy

Bird Bat - Actuated joints in all directions that cause the wings to curve in aiding to the flight - Fast flapping - More fixed wing then bird but jointed

Design Inspiration The Delfly inspired design was chosen as our flapping wing MAV because of its ability to meet our customers needs and has the highest probability to fulfill our design criteria and complete all necessary functions.

Gear Train and Wing Mechanism

Motor Selection VoltageRPMCurrent (free)Current (stall) 1.5V mA36.8mA 3.0V mA73mA 5.0V –Tiny Pager Motor by Solarbotics –Diameter = 4mm (0.158”) –Length = 16.4mm (0.65”) –Shaft Diameter = 0.66mm (0.026”) –Weight = 1g (.035oz)

Great Planes ElectriFly 4Ch FM Rx 72MHz Futaba FM Receiver Crystal Short R114F 72MHz High Hitec Eclipse 7 7-Channel FM/4 Component Selection

Battery: 110mAh 1S 3.7V LiPo: BMCX Servos: -Currently, servos scavenged from the E-Flite Microflyer will be used. -Piezo-electrics were researched, but would require more power than we could supply. Component Selection

Wing Material Selection - McMaster Polyester (PET) Film - Thickness:.001“ - Width: 40“ - Length: 10' - Tensile Strength: 28,000 psi - Clear, No Tint, Weather Resistant

“Bones” Material Selection - McMaster Rigid Carbon Fiber Shape Round Tube - OD:.125“ - ID:.074" - Length: 48" - Tensile Strength: 120,000 psi

1 Rudder used for Turning 2 Rudder used for increasing/decreasing pitch 3 Top Wing 4 Bottom Wing with rod attachment points 5 Base Frame structure 6Motor 7Gear 8 Rod linkages 9 Pinion Gear 10 Rocker / Wing Holder Conclusion

Future Plans –Find Torque on the Shaft –Resizing –Find appropriate Servos –Finalize Design Calculations –Finalize Manufacturing Plans

Questions?