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8/14/2019 Phase 4[2]
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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
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