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

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
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

5. Engineering Requirements

6. Functional Decomposition

7. Review of Top 3 System Concepts
3 Single Axis Load Cell
IMU with 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: 1.4 [m]
Chord length: 0.2 [m]
Mass: 0.65 [kg]
Middle mounted propeller
Wing span: 2 [m]
Chord length: 0.3 [m]
Mass: 0.98 [kg]
Front 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 Tension must be less than 5000 [N] (1100 lbs)
Slower wind speed: lower tension
Larger flight path radius: lower tension
Beta angle peaks: ~ 94-95°
Tension peaks: ~ 20 [m] tether length

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?