Single Line Tethered Glider Kyle Ball Jon Erbelding Matthew Douglas Paul Grossi William Charlock Sajid Subhani 9/9/2013 Problem Definition Presentation P14462
Agenda • Team introduction • Problem definition • Private and academic development • Customer needs • Engineering requirements • Timeline moving forward 9/9/2013 Problem Definition Presentation P14462
Team Introduction Team Member Role MSD Staff Role Sajid Subhani Industrial Eng / Ed Hanzlik Team Guide Team Lead Kyle Ball Mech Eng Art North Team Guide Matthew Douglas Mech Eng Mario Gomes Customer William Charlock Mech Eng Jon Erbelding Mech Eng Paul Grossi Mech Eng 9/9/2013 Problem Definition Presentation P14462
Problem Definition Glider • Goal: D esign, build, and test a tethered, small- scale, human-controlled glider. • Critical project objectives Tether • M aintain maximum tension on the tether • S ustaining horizontal and vertical flight paths • M easure / record tether tension & position • U nderstand the influential parameters for sustained, Base Operator w/ tethered, unpowered flight Station controller 9/9/2013 Problem Definition Presentation P14462
Private Development • Ampyx Power • Tethered Glider • Ground power generation • Figure-8 pattern • Capable of generating 850kW 9/9/2013 Problem Definition Presentation P14462
Private Development • Makani Power • Tethered Glider • Airborne wind turbines • Circular pattern • Tested 30kW; Goal of 600kW 9/9/2013 Problem Definition Presentation P14462
Academic Papers • Loyd • 1980 Paper outlining how to harness high altitude wind energy • 3 Different Methods • Simple Kite • Crosswind Powered Kite • Drag Powered Kite • Uses turbines on kite rather than a ground based generator 9/9/2013 Problem Definition Presentation P14462
Academic Papers Lansdorp • Two Different Arrays of Kites • Pumping Mill • Laddermill • Created a system to measure the tension magnitude and direction using 3D load cell assembly • Basis for our system Three axis load cell system created by Lansdorp et al.Image taken from [Lansdorp 2007]. 9/9/2013 Problem Definition Presentation P14462
Academic Papers Donnelly • Fighter Kites • Theoretical model to predict motion of fighter kite • Created a method to control the fighter kite motion • Created an experimental rig with generator and variable tether length similar to Lansdorp’s . Three axis load cell allowing for variable tether length created by Chris Donnelley. Image taken from [Donnelly 2013]. 9/9/2013 Problem Definition Presentation P14462
Customer Needs CN # Importance Description CN1 1 Tethered glider system (with electric prop assist for launching) that demonstrates at least 3 minutes of continuous circular flight path with taunt tether. CN2 1 Human controlled plane CN3 1 No special flight skills required CN4 2 Laptop not required for data collection CN5 1 Tether tension is measured and recorded during flights CN6 1 Tether direction is measured and recorded during flights CN7 1 Videos with accompanying data files of all flight tests CN8 1 Robust plane design CN9 1 Maximize tether tension CN10 2 Vertical and horizontal flight CN11 1 Obtain data that can be compared to Matlab simulation CN12 2 Reasonable plane size 9/9/2013 Problem Definition Presentation P14462
Engineering Requirements Metric No. Metric Marginal Value Ideal Value Units 1 Wingspan <=1.5 <1 m 2 Weight <=6 <=4 lbs 3 System Cost <500 $ 4 Length of Looping Flight >2 >=3 min 5 Resolution of Tension Data <=0.1 <=0.01 N 6 Resolution of Angular Position Data <=0.5 <=0.1 deg 7 Typical Repair Time 5 3 min 8 Data Sampling Rate >=100 >=500 Hz 9 Minimal Operational Wind Speed at Ground Level 10 5 mph 10 Maximum Operational Wind Speed at Ground Level 20 40 mph 11 Safe for User and Observer Yes Yes Binary 12 Number of Looping Trials Demonstrated >=25 >=30 Integer 13 Training Time (1st Time) <30 <20 min 14 Number of Left Right Horizontal Trials >=25 >=30 Integer 9/9/2013 Problem Definition Presentation P14462
House of Quality Engineering Metrics Minimal Operational Wind Speed at Ground Number of Looping Trials Demonstrated Maximum Operational Wind Speed at Number of Left Right Horizontal Trials Resolution of Angular Position Data Safe for User and Observer Resolution of Tension Data Length of Looping Flight Training Time (1st Time) Typical Repair Time Data Sampling Rate Customer Weights Ground Level System Cost Wingspan Weight Level Customer Requirements 1 Tethered glider system (with electric prop assist for launching) 1 x x 2 Human controlled plane 1 x x 3 No special flight skills required 1 x 4 Laptop not required for data collection 2 x x x 5 Tether tension is measured and recorded during flights 1 x x 6 Tether direction is measured and recorded during flights 1 x x 7 Videos with accompanying data files of all flight tests (even 1 x x 8 Robust plane design 1 x x x x 9 Maximize tether tension 1 x 10 Verticle and horizontal flight 2 x x 11 Obtain data that can be compared with Matlab simulation 1 x x x 12 Reasonable plane size 2 x x x x >=25 (integer) >=25 (integer) Yes (binary) <=0.5 (deg) >=100 (Hz) >=2 (min) <30 (min) <=1.5 (m) <=0.1 (N) 10 (mph) 20 (mph) <=6 (lbs) <500 ($) 5 (min) Technical Targets (Specifications) 9/9/2013 Problem Definition Presentation P14462
Timeline • Phase 1 (wk 1-3) - COMPLETE! • Define/understand problem definition • Research similar projects • Organize as a team • Phase 2 (wk 4-6) - In progress • Learn to fly • Research production load cells & gliders • Identify/understand critical engineering theory 9/9/2013 Problem Definition Presentation P14462
Timeline • Phase 3 (wk 7-9) • Determine glider design • If building glider from scratch • Identify airfoil types, materials, control/communication features • Develop theoretical simulation of flight • Phase 4 (wk 10-13) • Refine glider design • Refine theoretical simulations • Phase 5 (wk 14-15) • Order materials 9/9/2013 Problem Definition Presentation P14462
Using Asana 9/9/2013 Problem Definition Presentation P14462
Summary • Team introduction • Problem definition • Private and academic development • Customer needs • Engineering requirements • Timeline moving forward 9/9/2013 Problem Definition Presentation P14462
References • Ampyx Power. http://www.ampyxpower.com/ • Makani Power. http://www.makanipower.com/home/ • Loyd , Miles L. “Crosswind Kite Power.” Journal of Energy 4.3 (1980): 106 – 111. Print. • Lansdorp , Bas. “Comparison of Concepts for High -altitude Wind Energy Generation with Ground Based Generator.” Proceedings of the NRE 2005 Conference,Beijing, (2005): 1 – 9. Web. 17 Feb. 2011. • Donnelly, Christopher. “Dynamics and control of a single -line maneuverable kite.” Rochester Institute of Technology . (2013). 9/9/2013 Problem Definition Presentation P14462
Questions? 9/9/2013 Problem Definition Presentation P14462
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