Single Line Tethered Glider System Level Design Review Team P14462 Kyle Ball Matthew Douglas William Charlock Jon Erbelding Paul Grossi Sajid Subhani

Team Introduction Team Member Major Sajid Subhani Industrial Engineer - Team Lead Paul Grossi Mechanical Engineer Matt Douglas Jon Erbelding Kyle Ball Bill Charlock

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

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

Customer Requirements

Engineering Requirements Yellow: Major design Biege: DAQ Grey: Test flight White: System environment

Functional Decomposition

Functional Decomposition

Functional Decomposition

Functional Decomposition

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

Art’s Plane Sustained multiple damages Gained crash experience Possible tethered flight concept tests Salvage parts Sorry Art 

Glider Concepts

Buy Glider Pros: Pre-Engineered to Fly Can purchase spare parts Fast shipping Modifiable Cons: Not guaranteed to fly with tether Expensive Limited modifications

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

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

Benchmarking (Build) Experimental Airlines tutorials (Photon Model as baseline) Custom/interchangable design (wing, fuselage, rudder, etc.) ~$80 - $100 (~50%-70% “1 time cost”)

Measurement Concepts

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

3 Single-Axis Load Cells Pros: Can repair individual components Accurate Cheap Components Cons: Difficult to calibrate Potential for noisy data

3-Axis Load Cell Pros: Accurate Precalibrated Intuitive Setup Cons: Expensive

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

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

2 Potentiometers and 1-Axis Load Cell Pros Inexpensive Accurate angles Cons Easily breakable Require precise machining

Pugh Diagram – Base Station

Pugh Diagram – Base Station

Top 3 System Concepts 3 Single Axis Load Cell IMU with Single Axis Load Cell 2 Potentiometers with Single Axis Load Cell

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

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

Preliminary Budget Outline

Risk Assessment (Full)

Risk Assessment (High Risk)

Project Planning

Project Planning

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

Questions?

References http://www.hobbyking.com/hobbyking/store/__13994__Phoenix_2000_EPO_Composite_R_C_Glider_Plug_Fly_.html http://www.youtube.com/watch?v=ZfqGrzCKauw&list=PL0F209186D3388842