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Lockheed Martin Challenge. Vertical Launch UAV Project Plan. Mission Statement. Construct an unmanned aerial vehicle (UAV) with a camera payload UAV must autonomously navigate with real-time video feed to ground station UAV must utilize a pneumatic vertical launch system. - PowerPoint PPT Presentation


Stratos Systems

Lockheed Martin ChallengeVertical Launch UAVProject Plan

Construct an unmanned aerial vehicle (UAV) with a camera payload

UAV must autonomously navigate with real-time video feed to ground station

UAV must utilize a pneumatic vertical launch systemMission Statement

UAV Physical Layout

Constraints Wing DesignAirfoil Selection2 Piece Assembly Materials SelectionComposite vs. Film Covering

Landing SystemBelly Land (FR)


FuselageCamera Considerations

Modified Byrons Pipe Dream Design

Trade-offGas Electric

Propulsion Related Requirements40-50 kt cruise2 hour endurance

Possible SolutionsHackerAXI Gold 5330



Hacker A60 L Series

AXI Gold 5330

XFLR5MethodsVortex Lattice Lifting Line

OutputCl, Cd

Very efficient for low Reynolds Numbers

Structures SpreadsheetMike Garton

MotoCalc 8Engine Requirements

Current Design Process

Launch SystemAttachment

AvionicsAutopilot switchover

Systems Integration

EnduranceWeightPowerSize Humvee Capacity

Launch SequenceAircraft-Launch System AttachmentControlStructural Integrity

Technical Challenges

Piston and CasingCradle and CarriageCollapsible LegsPneumatic System

Pneumatic Launch System Components

Encased piston tubeMagnetic pistonRubber piston stopPiston and Casing

Magnetic carriageCarriage slides along casing above pistonCradle mounted on carriageSlot for hook attachment on planeCradle and Carriage

TransportationRequirements:To fit within the back cargo hold of a small HumveeAssemble within ~5 minDesign Solution:A compact rod-less pneumatic slideCollapsible stabilizing legsLaunch from the ground

Pneumatic System

Force RequirementsDesign Specifications:Plane weight 20 lbs100 psi air pressureFinal launch height of 100 ft

Using an Excel sheet to predict forcesDetermine:Air tank sizeValve sizePiston stroke lengthEtc.

Testing and IntegrationTestingPneumaticsCan we launch a 20 lb plane with a 100psi of air to a 100ft? If not what can we do?Actual field tests with a test plane

IntegrationPlane cradleAutopilot control

Avionics and Electrical Systems ComponentsAutopilotVideoGround Station

Autopilot RequirementsAutopilot System must:Be capable of autonomously navigating using waypoint navigation

Support a vertical pneumatic launch

Be capable of monitoring and controlling all systems necessary for flight

Support manual-override control

Be capable of transmitting real-time flight data to the ground control station

AutopilotPrime Concerns:

GPS, Inertial Measurement Unit, Compass, Gyroscope modules

Ability to interface with aircraft systems

Customization for launch and landing sequence


Video RequirementsVideo System must:Return real-time video to a base station

Be able to distinguish a 6 target at 100

Be capable of a minimum 30 minutes of operation

Be designed in a modular fashion

CameraIndustrial Box style camera

Able to be customized based on lens

Vari-focal Auto-Iris Lens

Manual adjustable focal length100 ft83 ftX / 83 pixels per foot4570100 ft140 ftX / 140 pixels per foot

Ground Station RequirementsGround Station must:Display real-time video as transmitted from the onboard camera

Provide controls necessary for manual override

Be capable of transmitting and receiving flight data to the onboard autopilot system

Be mobile and have the ability to be transported in the back of a military humvee

Ground StationSeparate displays for video and flight data

Components chosen based on onboard systems

Mobile power source based upon requirements of ground station components

Primary ConcernsLaunch to cruise transition

Data transmission and reception range

Flight time

Launch to Cruise TransitionVertical Launch

How/When does main autopilot take over?

Customize autopilot for launch

Data Transmission/ReceptionRange above 10 miles becomes problematic

Using a directional antenna presents problems

Omni-directional antenna power consumption problems

Planning on approximately 5W transmitter for video system

Independent transmitter for video systemRadius: xPower Required: yRadius: 2xPower Required: y2Radius: 3xPower Required: y3

Flight TimeOriginal flight time requested by Lockheed Martin: 2hrs

Power consumption for this length of time is problematicMore Batteries = More Weight

Control subsystem power consumption

Project Plan Sept 27, 2008

Initial design of each component Oct 15, 2008

Physical system build complete Nov 1, 2008

Integration of rail launch and aircraft Nov 30, 2008

Begin testing of autopilot system Nov 30, 2008

Testing of airplane and launch system Dec 1, 2008

Final draft plan Dec 15, 2008Deliverables for Fall 2008


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