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Single Line Tethered Glider

Single Line Tethered Glider. Sub-System Level Design Review. Team P14462. Kyle Ball Matthew Douglas William Charlock. Jon Erbelding Paul Grossi Sajid Subhani. Team Introduction. Agenda. Project Description Review Engineering Requirements Review Functional Decomposition Review

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Single Line Tethered Glider

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

  2. Team Introduction

  3. 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

  4. 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

  5. Engineering Requirements

  6. Functional Decomposition

  7. Review of Top 3 System Concepts IMU with Single Axis Load Cell 3 Single Axis Load Cell 2 Potentiometers with Single Axis Load Cell

  8. Glider Analysis

  9. Choosing the Glider Bixler v1.1 EPO Foam Phoenix 2000 EPO Foam Wing span: 2 [m] Chord length: 0.3 [m] Mass: 0.98 [kg] Front mounted propeller • Wing span: 1.4 [m] • Chord length: 0.2 [m] • Mass: 0.65 [kg] • Middle mounted propeller

  10. Choosing the Glider The smaller Bixler glider creates less tension for a larger operating range Able to operate with an affordable load cell

  11. Flight Orientation

  12. Flight Orientation

  13. Flight Analysis Wind Speed: ~ 11 mph

  14. Flight Analysis Wind Speed: ~ 22 mph

  15. Flight Analysis Wind Speed: ~ 44 mph

  16. 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)

  17. 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

  18. 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

  19. Proposed Tether and Bridle Design

  20. Ideal Bridle Location Analysis

  21. Wing Stress Analysis

  22. Wing Stress Analysis • Maximum stress: 15 MPa

  23. Fuselage Stress Analysis

  24. Tether and Bridle Configuration

  25. Base Station Analysis and Feasibility

  26. 2 Potentiometers and Single-Axis Load Cell

  27. 3 Single-Axis Load Cells

  28. Project Planning

  29. Project Planning

  30. Work Breakdown Structure (10-12) • Paul: • Jon: • Kyle: • Matt: • Saj: • Bill:

  31. Questions?

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