Single Line Tethered Glider System Level Design Review Team P14462 Kyle Ball Jon Erbelding Matthew Douglas Paul Grossi William Charlock Sajid Subhani
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 Glider ● Goal: Design, build, and test a tethered, small-scale, human-controlled glider. ● Critical Project Objectives: Tether Maintain maximum tension on the tether ○ Sustaining horizontal and vertical flight ○ paths Measure and record tether tension and ○ Base Operator w/ position Station controller Understand the influential parameters for ○ sustained, tethered, unpowered flight 11/2/2013 Systems Level Design Review P14462
Customer Requirements 11/2/2013 Systems Level Design Review P14462
Engineering Requirements Yellow: Major design Biege: DAQ Grey: Test flight White: System environment 11/2/2013 Systems Level Design Review P14462
Functional Decomposition 11/2/2013 Systems Level Design Review P14462
Functional Decomposition 11/2/2013 Systems Level Design Review P14462
Functional Decomposition 11/2/2013 Systems Level Design Review P14462
Functional Decomposition 11/2/2013 Systems Level Design Review P14462
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 11/2/2013 Systems Level Design Review P14462
Glider Concepts 11/2/2013 Systems Level Design Review P14462
Buy Glider Pros: ● 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) 56.70 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 11/2/2013 Systems Level Design Review P14462
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 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 Gyro Pros: ● 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 Cells Pros: ● 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 Cell Pros: ● Accurate ● Precalibrated ● Intuitive Setup Cons: ● Expensive 11/2/2013 Systems Level Design Review P14462
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 11/2/2013 Systems Level Design Review P14462
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 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 11/2/2013 Systems Level Design Review P14462
Pugh Diagram – Base Station Concept Options 3 Single Axis Load Force Gauge and Force Gauge and 2 Potentiometers Critieria 3-Axis Load Cells IMU and Load Cell Cells GPS Resistance Gyro and Load Cell Clean Appearance + - - + s Number of Components + + + + - Setup Time + + - + - Setup Procedure + + - - - Calibration s - - s + Cost - - - + + Precision + + - + + Accuracy + + - + + Datum Spare part Cost - - - - + Spare part Availabilty s s s s s Safety s s s s s Is Durable s - s - - Data Acquisition s - - s s Weight s - s - + Tension Resolution + s s s s Direction Resolution + - - + + Sum of "+" 8 5 1 7 7 Sum of "s" 6 3 5 5 5 Sum of "-" 2 8 10 4 4 Total 6 -3 -9 3 3 11/2/2013 Systems Level Design Review P14462
Pugh Diagram – Base Station Concept Options 3 Single Axis Load Force Gauge and Force Gauge and 2 Potentiometers Critieria 3-Axis Load Cells IMU and Load Cell Cells GPS Resistance Gyro and Load Cell Clean Appearance s + - - + Number of Components + + + + + Setup Time + + + s + Setup Procedure + + + s - Calibration - - - - - Cost - - - - - Precision - + - - + Accuracy - - - - + Datum Spare part Cost - - - - - Spare part Availabilty s s s s s Safety s s s s s Is Durable + + + + + Data Acquisition s s - - s Weight - - - - - Tension Resolution s + s s s Direction Resolution - - - - s Sum of "+" 4 7 4 2 6 Sum of "s" 5 3 3 5 5 Sum of "-" 7 6 9 9 5 Total -3 1 -5 -7 1 11/2/2013 Systems Level Design Review P14462
Top 3 System Concepts 3 Single Axis Load Cell IMU with Single Axis Load Cell 2 Potentiometers with Single Axis Load Cell 11/2/2013 Systems Level Design Review P14462
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 0.1 deg 11/2/2013 Systems Level Design Review P14462
Preliminary Budget Outline Purchase Price ($) Glider Glider 100 Receiver 60 Battery x2 40 Base Station Materials 100 Electronics 100 Total 400 Remaining (For Mistakes and Repairs) 100 11/2/2013 Systems Level Design Review P14462
Risk Assessment (Full) 11/2/2013 Systems Level Design Review P14462
Risk Assessment (High Risk) 11/2/2013 Systems Level Design Review P14462
Project Planning 11/2/2013 Systems Level Design Review P14462
Project Planning 11/2/2013 Systems Level Design Review P14462
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 11/2/2013 Systems Level Design Review P14462
Questions? 11/2/2013 Systems Level Design Review P14462
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