9/30/2013 Systems Level Design Review P14462

Single Line Tethered Glider

Team P14462System Level Design Review

Jon ErbeldingPaul Grossi

Sajid Subhani

Kyle BallMatthew DouglasWilliam Charlock

9/30/2013 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

9/30/2013 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

9/30/2013 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

9/30/2013 Systems Level Design Review P14462

Customer Requirements

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Engineering Requirements

Yellow: Major designBiege: DAQGrey: Test flightWhite: System environment

9/30/2013 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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Art’s Plane

● Sustained multiple damages● Gained crash experience● Possible tethered flight concept tests● Salvage parts● Sorry Art

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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

9/30/2013 Systems Level Design Review P14462

Glider Concepts

9/30/2013 Systems Level Design Review P14462

Buy GliderPros:● Pre-Engineered to Fly● Can purchase spare parts● Fast shipping● Modifiable

Cons:● Not guaranteed to fly with

tether● Expensive● Limited modifications

9/30/2013 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

9/30/2013 Systems Level Design Review P14462

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

9/30/2013 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”)

9/30/2013 Systems Level Design Review P14462

Measurement Concepts

9/30/2013 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

9/30/2013 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

9/30/2013 Systems Level Design Review P14462

3-Axis Load CellPros:● Accurate● Precalibrated● Intuitive Setup

Cons:● Expensive● Dead zones

9/30/2013 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

9/30/2013 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

9/30/2013 Systems Level Design Review P14462

2 Potentiometers and 1-Axis Load Cell

Pros● Inexpensive● Accurate angles

Cons● Easily breakable● Require precise

machining

9/30/2013 Systems Level Design Review P14462

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

9/30/2013 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

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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?