2. Order of Presentation David – Intro and Fall Review Matt – Testing and Summary of Changes Josiah – Details on New Design Josh – Electrical Hardware Ona – Electrical Software / Optimization TJ – Progress Summary / Future Work

3. Outline Summary – Fall (David) Review of Competition (missions, specs, etc.) Old Design Progress Report New Design (Josiah) Testing (Matt) Static thrust Endurance Various propellers / throttle settings conclusions Payload Configuration (Matt) New Dimensions (Josiah) Bulkhead Skeleton (Josiah) Landing Gear (Josiah) Wing Attachment (Josiah) Electronics Configuration (Josh/Ona) Block Diagram (side-by-side) Mission Model (flow chart) (Matt) HPMI (Matt) Future Work (TJ) Fabrication testing CFD Finalize Mission Model

4. Project Overview Develop a UAV which will satisfy the AIAA Design/Build/Fly Competition mission profile. Competition Details Location: Tucson, AZ Date: April 15-17, 2011 Major requirements: Hand launched Fixed wing Electric powered (NiCad or NiMH batteries) Propeller driven Must be contain within a carry on bag Max propulsion battery of ¾ lbs. Max current draw of 20 amps

5. Mission Profile Mission 1: Dash to Critical Target 4 minutes without payload to fly around course Scoring equation: Mission 2: Ammo Re-supply Steel bar payload completing 3 laps around course Scoring equation: Mission 3: Medical supply Mission Golf balls payload completing 3 laps around course Scoring equation:

6. Fall Semester Final Design Side Top

7. New Design

8. Testing – Complete Setup

9. Testing – Propulsion System

10. Testing – Data Logger Interface

11. Testing Manufacturer Motor Specifications Max Static Thrust: 42.4 oz (2.65 lb.) Able to propel 5 lb. aircraft Static Thrust GLX Force Sensor Various Propellers / Throttle Settings Graph (12x8, 9x7.5, etc) Conclusions Thrust may be insufficient for hand launch at initial desired weight of 5lbs Need to reduce the size and weight of system Don’t want to increase battery size / weight Motor is already best option

12. Payload Configuration Reduced to two rows side by side Less required storage space Less required structure

13. New Dimensions Smaller Design Lighter Less drag Less energy consumption Old Design New Design 4.5” 3” 30”23”

14. Bulkhead Selection Provides stiffness, toughness, and ease of fabrication Carbon fiber/Balsa Wood Joined via thin circular CFRP tie rods

15. Landing Platform – Friction Contact Advantages Ergonomic hand launch Less drag Disadvantages Higher potential for damage Propeller interference with ground

16. Landing Platform Requirements Leading ground contacts must be low friction Rear contact must be high friction All contact materials must be abrasion resistant Our approach Carbon Fiber/Kevlar hybrid composite Teflon/low friction coating for front ground contacts Low Friction Ground Contacts High Friction Ground Contact

17. Wing Connections – Friction Fit Slides tightly into position Quick and easy assembly Light weight Few components to break

18. Mission Model 1)Hand Launch (100%) 2)Acceleration (100%) 3)Turn 1 (90%) 4)Cruise (75%) 5) 360 Degree Loop (90%) 6)Cruise (75%) 7)Turn 2 (90%) 8)Landing (50%) #) Phase (Throttle Setting)

19. Electronics - Hardware Propulsion Batteries: Elite 1500 mAh (10 Cell NiMH) 4.5 minutes battery life (theoretical) 12V; 20A Avg. Current Draw 5.25 minutes battery life (tested) 13.5V; 16A Avg. Current Draw May need to increase Capacity Servo Batteries 750 mAh (5 Cell NiMH) Servo Controller draws minimal current Battery Lifetime yet to be determined Receiver added to Servo Battery Pack to maximize the lifetime for Propulsion Battery Pack. Electrical/Electromechanical Components DX6 Transmitter/Receiver Himax 2025 Brushless Motor Castle Creations Phoenix 25A ESC Recommended for motor Micro Maestro 6 Ch USB Servo Controller Supports 4 Servos / 1 Gyro Programmable Dual Axis Gyroscope (Pitch and Roll) May or may not be used Can fight with experienced pilots

20. Electronics - Hardware

21. Electronics & Controls Main selections -DX6i 6-channel transmitter (Spektrum) -AR6200 6-channel receiver (Spektrum) -Micro Maestro 6-Channel USB Servo Controller (Pololu) -Digital Servo D65HB (HuiDa RC International Inc) - LPR510AL Dual-Axis Gyroscope (Pololu) Safety Manuever - Kill Throttle -Roll Right -Yaw Right -Nose Up

22. Electronics & Controls Block Diagram

23. Aircraft Optimization Lift Coefficient Drag Coefficient Empty Weight Aircraft Dimensions Wind Speed Payload Size / Weight Propeller Size Motor Properties Gear Box Battery Properties Reference Payload Reference Laps Propulsion Power Aerodynamics Structures Performance Optimized? Yes No Mission Score Overall Score Aircraft Dimensions Payload Size / Weight Propeller Size Motor Properties Gear Box Battery Properties Top Speed Performance InputsAnalysisOptimization Optimal Parameters

24. Payload Configuration Image of new golf ball arrangement Smaller size (width and height) Better for gripping Less drag Easier to fit into suitcase 16 golf balls (~1.6lbs) Decrease size of steel bar P/W ~ 1.5 instead of 2.5 Maximum weight ~3lbs loaded

25. HPMI Image of manufactured component Learned process to fabricate composites Honeycomb-core no good Too heavy if filled with resin Requires different technique (wet layup) Permitted access to HPMI facilities Friday 01/28 @ 8:30am Manufacture more components for testing Begin to fabricate wings, fuselage, other parts

26. Preliminary Fabrication Nomex Honeycomb-Carbon Fiber Composite Attempted Vacuum Bagging Need Different Fabrication Method (Wet Layup) Too Heavy Foam Core to Replace Honeycomb Kevlar added to bottom for landing gear

27. Work in Progress Fabrication of First Prototype Mission and Performance Analysis Code Power System Simulink Simulation Control System Programming CFD of Prototype Report Compilation

28. Future Work Control System Testing Flight Testing Design Optimization Finalize Report