Single Line Tethered Glider
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Transcript of Single Line Tethered Glider
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9/30/2013 Systems Level Design Review P14462
Single Line Tethered Glider
Team P14462Sub-System Level Design Review
Jon ErbeldingPaul Grossi
Sajid Subhani
Kyle BallMatthew DouglasWilliam Charlock
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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
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Agenda● Project Description Review● Engineering Requirements Review● Functional Decomposition Review● Top 3 Concepts from Last Review● Concept Feasibility
● Glider Analysis and Feasibility● Base Station Analysis and Feasibility
● Project Planning● Work Breakdown Structure
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Project Description Review● 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
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Engineering Requirements
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Functional Decomposition
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Review of 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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Glider Analysis
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Choosing the Glider
Bixler v1.1 EPO Foam Wing span: 1.4 [m] Chord length: 0.2 [m] Mass: 0.65 [kg] Middle mounted propeller
Phoenix 2000 EPO Foam Wing span: 2 [m] Chord length: 0.3 [m] Mass: 0.98 [kg] Front mounted propeller
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Choosing the Glider The smaller Bixler glider creates less
tension for a larger operating range Able to operate with an affordable load cell
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Flight Orientation
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Flight Orientation
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Flight Analysis
Wind Speed: ~ 11 mph
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Flight Analysis
Wind Speed: ~ 22 mph
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Flight Analysis
Wind Speed: ~ 44 mph
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Qualitative DOE
Slower wind speed: lower tension
Larger flight path radius: lower tension
Beta angle peaks: ~ 94-95°
Tension peaks: ~ 20 [m] tether length
Tension must be less than 5000 [N] (1100 lbs)
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Quantitative DOE [Describe how will pick our flight
configuration for experiment] Inputs
Maximum allowable tension Observed wind speed
Outputs Beta angle Tether length Flight path radius
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Bridle and Tether Setup Maximum allowable stress for Bixler glider: 30 Mpa
Bridle attached at two points on the fuselage causes structural failure at the wing root with 180 MPa
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Proposed Tether and Bridle Design
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Ideal Bridle Location Analysis
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Wing Stress Analysis
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Wing Stress Analysis
Maximum stress: 15 MPa
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Fuselage Stress Analysis
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Tether and Bridle Configuration
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Base Station Analysis and Feasibility
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2 Potentiometers and Single-Axis Load Cell
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3 Single-Axis Load Cells
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Project Planning
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Project Planning
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Work Breakdown Structure (10-12)● Paul: ● Jon: ● Kyle: ● Matt: ● Saj: ● Bill:
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Questions?