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Unmanned Chopper

Group #15:

Chris AlexanderBrandon MacWhinnieMichael ManzioneSonal Pujji

Juan Rodriguez

Stevens Institute of TechnologyFebruary 21, 2008Carnegie 315

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Design Recap

Two motors will provide sufficient power to

the coaxial rotors to achieve lift Vehicle steering will be achieved through a

fixed pitch rotor design and a swashplate forthe upper rotor assembly

Vehicle will be radio controlled using a 6channel radio control system

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Final Product Design

Two coaxial counter-rotating rotor bladeassemblies

Two electric brushless motorsMotor will be powered by two LiPo 11.1V

batteries

Protective fiberglass outer casing Small, portable, and lightweightMax Diameter: 18Max Height: 8

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Prototype Justification

Progress check Allows for requirement/objective check

Assess risks/issues Easier to fix problems Increases development speed

Cost Effective Cheaper to fix and change before production

Demonstrate functionality Pitch to customers

Potential source of R&D funding

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Revised Scope

Initial scenario too general

Reconnaissance, Border Patrol, Police uses Indoor vs. outdoor flight

Attached video camera

Revised Scope Sound stealth reconnaissance not likely

Indoor flight/small size Competitor: Sikorsky

Plan for attached camera add if time allows

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Radio Control Equipment

6 Channel Futaba Radio Control System

Use 4 channels to control 4 degrees of motion Up and down (altitude) Rotation (about central axis)

Forward and Backwards (translation)

Left and Right (translation)

5th channel to control camera motions

Radio revised to be helicopter capable

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Manufacturing Plan

Outer shell construction

Fiberglass Inner frame construction

Aluminum rods

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Manufacturing

The complete outer shell of our unit will beconstructed from fiberglass

High strength to weight ratio Provides a stable base for components Easily molded into any shape Can be layer to adjust weight around perimeter of unit for

balance

The inner frame will be constructed from aluminumrods High strength to weight ratio Provides a stable platform for motors and rotors Allows wires to be run out of sight across outer ring

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Make/Buy - Status

-MSupport Braces

-MMotor Cylinder

-MFrame/Shell

YB4:1 Ratio Fast Epoxy Hardener

BHeading Lock Gyro

BRotor Head Assembly

YBPushrodsBSwash Plate (2 input)

YBRadio Controller (6-Ch) w/ servos

BSpeed Controller

BRotor (set of 2)

YBFiberglass cloth

YBBalance System

YBBattery Charger

YBLiPo Battery

YBElectric Motors

Ordered (Y/N/-)Make/Buy (M/B)Component

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Conclusion

Final design we will move forward with andbuild is a ducted coaxial rotor blade aircraft

Vehicle will be able to maintain a hover andlevel flight and can maneuver on 3 axes.

Minimum flight time is about 15 minutes and

maximum operating altitude is 100 feet. The compact design and low cost provides

great advantages over other alternatives.

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Questions or Comments?

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Gantt Chart

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Nugget Chart