Final Design Team 6 December 2 nd, 2010. UAV Team Specializations David Neira – Power &...

Final Design Team 6

December 2nd, 2010

UAV Team SpecializationsDavid Neira – Power & Propulsion Josiah Shearon – Materials Selection & FabricationMatthew Martin – Fuselage ConfigurationJosh Mellen – Electronics & Control (Hardware)TJ Worden – Wing DesignOna Okonkwo – Electronics & Control (Software)

Presentation OutlineInterim Design ReviewFinalized Design OverviewFinalized Design BreakdownFuture WorkQuestions

Interim Design Review

Center of Gravity Optimization

Payload DistributionMission 3Mission 2

UAV/Payload Disassembled

Side

Top

Materials/FabricationMaterials used

Carbon fiber Vinyl Ester Matrix

Balistics grade KevlarCore

Foam Nomex

Balsa woodFabrication Techniques

Vacuum BaggingMold Making

Aircraft SpecificationsWingspan: 46.7 inAspect Ratio: 6.67 inTailspan: 10 inVertical Stabilizer: 5 inOverall Length: 30.8 inEmpty Weight: 1.52 lbsMax Loaded Weight: 5.27 lbs

Wing Leading Edge-Stress

Wing Leading Edge-Deflection

Wing Attachment-Stress

Wing Attachment-Deflection

Wing Attachment-Stress

Wing Attachment-Deflection

Landing Gear Stress Analysis

Rear Landing GearMax. Stress: 11 MPa

Battery AnalysisElite 1500 Cell (1.2V, 1500 mAh)

Average Capacity: 1350 mAhMaximum Current Draw: 20A

Limited by Fuse 15.2A Motor Current Draw Minor draw from other components

Battery life at 20A draw1350 mAh: 4.05 minutes1500 mAh: 4.5 minutes

Battery Analysis

Battery AnalysisRisk Assessment

Battery Capacity not sufficient for applicationCell Failure may lead to insufficient or no voltageRecharging battery may reduce battery performance

Future Work: PropulsionsWind Tunnel Testing

Determine Dynamic Thrust CurveStatic Endurance Test

Determine Component Compatibility

Future Work: Aerodynamics and Control/StabilityImplement CFD on current model

Ensure minimal dragDevelop mission model for each phase of flight

Predict forces, moments, aircraft stateImplement AVL/XFLR analysis

Simulate aircraft during phases of flightEnsure empennage optimality.Appropriately size wing and tail control surfaces.

Future Work: ProgrammingVisual Studio 2010

Previous experience with the softwareEasily accessible (free of charge)Handles both C and C++

C languageMost familiarMost common used language for servo programming

Future Work: ProgrammingItems in possession

LPR510AL Dual-Axis (Pitch and Roll or XY) Gyro with ±100°/s and ±400°/s RangersMicro Maestro 6-Channel USB Servo Controller

Risk analysisDebuggingThorough possibilities evaluation

Future Work: Flight TestingData Log Flight Maneuvers

Air Speed SensorMotor Temperature SensorMotor RPMCurrent DrawVoltageAltitude SensorGyroscope

Optimize

Questions?