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

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

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

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

Engineering Requirements

Functional Decomposition

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

Glider Analysis

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

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

Flight Orientation

Flight Orientation

Flight Analysis Wind Speed: ~ 11 mph

Flight Analysis Wind Speed: ~ 22 mph

Flight Analysis Wind Speed: ~ 44 mph

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

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

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

Proposed Tether and Bridle Design

Ideal Bridle Location Analysis

Wing Stress Analysis

Wing Stress Analysis Maximum stress: 15 MPa

Fuselage Stress Analysis

Tether and Bridle Configuration

Base Station Analysis and Feasibility

2 Potentiometers and Single-Axis Load Cell

3 Single-Axis Load Cells

Project Planning

Project Planning

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

Questions?