single line tethered glider
DESCRIPTION
Single Line Tethered Glider. System Level Design Review. Team P14462. Kyle Ball Matthew Douglas William Charlock. Jon Erbelding Paul Grossi Sajid Subhani. Team Introduction. Agenda. Project Description Review Customer Needs Review Customer Requirements Review - PowerPoint PPT PresentationTRANSCRIPT
Single Line Tethered Glider
Team P14462System Level Design Review
Jon ErbeldingPaul Grossi
Sajid Subhani
Kyle BallMatthew DouglasWilliam Charlock
11/2/2013 Systems Level Design Review P14462
Team Introduction
Team Member Major
Sajid Subhani Industrial Engineer - Team Lead
Paul Grossi Mechanical Engineer
Matt Douglas Mechanical Engineer
Jon Erbelding Mechanical Engineer
Kyle Ball Mechanical Engineer
Bill Charlock Mechanical Engineer
11/2/2013 Systems Level Design Review P14462
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
11/2/2013 Systems Level Design Review P14462
Project Description● 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
Glider
Tether
Base Station
Operator w/controller
11/2/2013 Systems Level Design Review P14462
Customer Requirements
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Engineering Requirements
Yellow: Major designBiege: DAQGrey: Test flightWhite: System environment
11/2/2013 Systems Level Design Review P14462
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
11/2/2013 Systems Level Design Review P14462
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 GliderPros:● Pre-Engineered to Fly● Can purchase spare parts● Fast shipping● Modifiable
Cons:● Not guaranteed to fly with
tether● Expensive● Limited modifications
11/2/2013 Systems Level Design Review P14462
Benchmarking (Buy)Plane Price ($)Bixler v1.1 EPO 1400mm - (ARF) 56.70Hobbyking Bixler 2 EPO 1500 mm w/ Brushless Motor, Servos and Optional Flaps (ARF) 69.99AXN Floater-Jet w/ Servo, Motor, ESC (EPO) PNF 65.22Hobbyking Sky Eye EPO FPV/Glider w/ Flaps 2000mm (PNF) 120.33Phoenix 2000 EPO Composite R/C Glider (Plug and Fly) 78.72Airfield Giant Convertible EDF Power RC Glider Almost Ready to Fly 2400mm Wingspan 209.95Airwing RC WingSurfer Airplane Glider 4 Channel Almost Ready to Fly RC 1400mm Wingspan 79.95Airwing RC Bobcat 6 Channel Pusher Plane RC Kit 1143mm Wingspan 149.95TT-62 Alekto Electric Twin-Engine Fiberglass RC Airplane Kit 127.40
Bixler 2
Airwing WingSurfer
Sky Eye
Phoenix 2000
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Build GliderPros:● 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
11/2/2013 Systems Level Design Review P14462
Benchmarking (Build)
● Experimental Airlines tutorials (Photon Model as baseline)
● Custom/interchangable design (wing, fuselage, rudder, etc.)
● ~$80 - $100 (~50%-70% “1 time cost”)
11/2/2013 Systems Level Design Review P14462
Measurement Concepts
11/2/2013 Systems Level Design Review P14462
Force Gauge and Resistance GyroPros:● Innovative
Cons:● Expensive● Complex Data● Internal Turbulence● Requires current line on
tether● Difficult to calibrate● Difficult to set up
11/2/2013 Systems Level Design Review P14462
3 Single-Axis Load CellsPros:● Can repair individual
components● Accurate● Cheap Components
Cons:● Difficult to calibrate● Potential for noisy data
11/2/2013 Systems Level Design Review P14462
3-Axis Load CellPros:● Accurate● Precalibrated● Intuitive Setup
Cons:● Expensive
11/2/2013 Systems Level Design Review P14462
IMU Board and 1-Axis Load CellPros:● Provides accurate position
and orientation data
Cons:● Requires noise filtering● Difficult to calibrate● IMU system would be on
glider
11/2/2013 Systems Level Design Review P14462
Force Gauge and GPSPros:● Digital Data● Accurate force measure
Cons:● Expensive● GPS on glider changes
weight● Difficult to calibrate● Difficult to set up● Innacurate position
11/2/2013 Systems Level Design Review P14462
2 Potentiometers and 1-Axis Load Cell
Pros● Inexpensive● Accurate angles
Cons● Easily breakable● Require precise
machining
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Pugh Diagram – Base StationCritieria 3 Single Axis Load
Cells3-Axis Load Cells Force Gauge and
GPSForce Gauge and Resistance Gyro
IMU and Load Cell 2 Potentiometers and Load Cell
Clean Appearance + - - + sNumber of Components + + + + -
Setup Time + + - + -Setup Procedure + + - - -
Calibration s - - s +Cost - - - + +
Precision + + - + +Accuracy + + - + +
Spare part Cost - - - - +Spare part Availabilty s s s s s
Safety s s s s sIs Durable s - s - -
Data Acquisition s - - s sWeight s - s - +
Tension Resolution + s s s sDirection Resolution + - - + +
Sum of "+" 8 5 1 7 7Sum of "s" 6 3 5 5 5Sum of "-" 2 8 10 4 4
Total 6 -3 -9 3 3
Datum
Concept Options
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Pugh Diagram – Base Station
Critieria3 Single Axis Load
Cells3-Axis Load Cells
Force Gauge and GPS
Force Gauge and Resistance Gyro
IMU and Load Cell2 Potentiometers
and Load CellClean Appearance s + - - +
Number of Components + + + + +Setup Time + + + s +
Setup Procedure + + + s -Calibration - - - - -
Cost - - - - -Precision - + - - +Accuracy - - - - +
Spare part Cost - - - - -Spare part Availabilty s s s s s
Safety s s s s sIs Durable + + + + +
Data Acquisition s s - - sWeight - - - - -
Tension Resolution s + s s sDirection Resolution - - - - s
Sum of "+" 4 7 4 2 6Sum of "s" 5 3 3 5 5Sum of "-" 7 6 9 9 5
Total -3 1 -5 -7 1
Concept Options
Datum
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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
Parameter Marginal Value Ideal Value Units
Data Sampling Rate 100 500 Hz
Tension Resolution 0.1 0.01 N
Angular Position Resolution 0.5 0.1 deg
Data Collection Requirements:
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Preliminary Budget Outline
Purchase Price ($)
GliderGlider 100Receiver 60Battery x2 40
Base StationMaterials 100Electronics 100
Total 400Remaining (For Mistakes and Repairs) 100
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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?