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Single Line Tethered Glider
System Level Design Review Team P14462 Kyle Ball Matthew Douglas William Charlock Jon Erbelding Paul Grossi Sajid Subhani
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Team Introduction Team Member Major Sajid Subhani
Industrial Engineer - Team Lead Paul Grossi Mechanical Engineer Matt Douglas Jon Erbelding Kyle Ball Bill Charlock
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Agenda Project Description Review Customer Needs Review
Customer Requirements Review Functional Decomposition Concept Development Concept Comparison Data Collection Architecture Risk Assessment Project Planning Work Breakdown Structure
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Project Description Glider Tether Base Station Goal: Design, build, and test a tethered, small-scale, human-controlled glider. Critical Project Objectives: Maintain maximum tension on the tether Sustaining horizontal and vertical flight paths Measure and record tether tension and position Understand the influential parameters for sustained, tethered, unpowered flight Operator w/ controller
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Customer Requirements
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Engineering Requirements
Yellow: Major design Biege: DAQ Grey: Test flight White: System environment
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Functional Decomposition
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Functional Decomposition
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Functional Decomposition
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Functional Decomposition
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Concept Development Gliders Buy an RC glider
Design and build an RC glider Measurement Devices on Base Station Buy a 3-axis Load Cell Build Load Cell from three 1-axis Load Cells GPS with Force Gauge Resistance Gyro with Force Gauge IMU with 1-axis Load Cell
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Art’s Plane Sustained multiple damages Gained crash experience
Possible tethered flight concept tests Salvage parts Sorry Art
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Glider Concepts
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Buy Glider Pros: Pre-Engineered to Fly Can purchase spare parts
Fast shipping Modifiable Cons: Not guaranteed to fly with tether Expensive Limited modifications
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Benchmarking (Buy) Bixler 2 Sky Eye Airwing WingSurfer Phoenix 2000
Plane Price ($) Bixler v1.1 EPO 1400mm - (ARF) 56.70 Hobbyking Bixler 2 EPO 1500 mm w/ Brushless Motor, Servos and Optional Flaps (ARF) 69.99 AXN Floater-Jet w/ Servo, Motor, ESC (EPO) PNF 65.22 Hobbyking Sky Eye EPO FPV/Glider w/ Flaps 2000mm (PNF) 120.33 Phoenix 2000 EPO Composite R/C Glider (Plug and Fly) 78.72 Airfield Giant Convertible EDF Power RC Glider Almost Ready to Fly 2400mm Wingspan 209.95 Airwing RC WingSurfer Airplane Glider 4 Channel Almost Ready to Fly RC 1400mm Wingspan 79.95 Airwing RC Bobcat 6 Channel Pusher Plane RC Kit 1143mm Wingspan 149.95 TT-62 Alekto Electric Twin-Engine Fiberglass RC Airplane Kit 127.40 Bixler 2 Sky Eye Airwing WingSurfer Phoenix 2000
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Build Glider Pros: Can optimize plane for tethered flight
Build spare sparts Resources available Cons: Not guaranteed to fly Requires time to build Complex Hard to balance Could become expensive if mistakes are made
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Benchmarking (Build) Experimental Airlines tutorials (Photon Model as baseline) Custom/interchangable design (wing, fuselage, rudder, etc.) ~$80 - $100 (~50%-70% “1 time cost”)
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Measurement Concepts
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Force Gauge and Resistance Gyro
Pros: Innovative Cons: Expensive Complex Data Internal Turbulence Requires current line on tether Difficult to calibrate Difficult to set up
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3 Single-Axis Load Cells
Pros: Can repair individual components Accurate Cheap Components Cons: Difficult to calibrate Potential for noisy data
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3-Axis Load Cell Pros: Accurate Precalibrated Intuitive Setup Cons:
Expensive
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IMU Board and 1-Axis Load Cell
Pros: Provides accurate position and orientation data Cons: Requires noise filtering Difficult to calibrate IMU system would be on glider
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Force Gauge and GPS Pros: Digital Data Accurate force measure Cons:
Expensive GPS on glider changes weight Difficult to calibrate Difficult to set up Innacurate position
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2 Potentiometers and 1-Axis Load Cell
Pros Inexpensive Accurate angles Cons Easily breakable Require precise machining
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Pugh Diagram – Base Station
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Pugh Diagram – Base Station
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Top 3 System Concepts 3 Single Axis Load Cell
IMU with Single Axis Load Cell 2 Potentiometers with Single Axis Load Cell
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Data Collection Architecture
Data acquisition: LabVIEW or Arduino Storage: SD Card or Laptop Data Collection Requirements: Parameter Marginal Value Ideal Value Units Data Sampling Rate 100 500 Hz Tension Resolution 0.1 0.01 N Angular Position Resolution 0.5 deg
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Preliminary Budget Outline
Purchase Price ($) Glider Glider Receiver Battery x Base Station Materials Electronics Total Remaining (For Mistakes and Repairs)
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Preliminary Budget Outline
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Risk Assessment (Full)
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Risk Assessment (High Risk)
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Project Planning
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Project Planning
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Work Breakdown Structure
Paul: Glider Dynamics & IMU Implementation Jon: Glider Dynamics & Load Cell Implementation Kyle: EDGE & Load Cell Implementation / Base Station Construction Matt: Glider Dynamics, Purchased Gliders Analysis & Potentiometer Implementation Saj: DOE Research & Team Management Bill: Built Glider Analysis & DAQ
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Questions?
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References
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