Flapping Wing MAV

1
Flapping Wing MAV

• Group 13 NASA Ames
• Parker Cook
• George Heller
• Joshua Nguyen
• Brittney Theis

2
The Customer

• Dr. Shih
• Funding to be provided by the NASA Ames facility

3
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.

4
Project Scope and Needs
Operation Specification
Flight Type Flapping Wing
Flight Time 10mins
Ground Clearance 5m
Flight Distance 50m
Degrees of Freedom 3
Size Specifications 10cm x 10cm x 10cm
Weight 100g
Ease of Operation 1 user
 
5
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

6
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

7
Bird
- Actuated joints in all directions that cause
the wings to curve in aiding to the flight
Bat
- Fast flapping - More fixed wing then bird but
jointed
8
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.

9
Gear Train and Wing Mechanism
10
Motor Selection

• Tiny Pager Motor by Solarbotics
• Diameter 4mm (0.158)
• Length 16.4mm (0.65)
• Shaft Diameter 0.66mm (0.026)
• Weight 1g (.035oz)

Voltage RPM Current (free) Current (stall)
1.5V 10100 12.4mA 36.8mA
3.0V 20300 17.6mA 73mA
5.0V 32500 - -
11
Component Selection
Great Planes ElectriFly 4Ch FM Rx 72MHz
Hitec Eclipse 7 7-Channel FM/4
Futaba FM Receiver Crystal Short R114F 72MHz High
12
Component Selection

• 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.

Battery 110mAh 1S 3.7V LiPo BMCX
13
Wing Material Selection

• McMaster Polyester (PET) Film
• Thickness .001
• Width 40
• Length 10'
• Tensile Strength 28,000 psi
• Clear, No Tint, Weather Resistant

14
Bones Material Selection

• McMaster Rigid Carbon Fiber Shape Round Tube
• OD .125
• ID .074"
• Length 48"
• Tensile Strength 120,000 psi

15
Conclusion
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
6 Motor
7 Gear
8 Rod linkages
9 Pinion Gear
10 Rocker / Wing Holder
16
(No Transcript)
17
Future Plans

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

18
Questions?