The Screamin’ Dingo An Investigation and Adventure into Competitive Aerobatic Light Sport Aircraft AIAA Undergraduate Team Aircraft Design Competition 2015 - 2016 Jefferson Vlasnik Joel Eppler Liam Murphy Riley Sprunger Michael Gritsch Justin Fox Taylor George Joel Kennedy Cameron Clanchy Team Member Nationality AIAA Number Signature Cameron Clanchy AUS 688036 Joel Eppler USA 688495 Justin Fox AUS 687865 Taylor George USA 665629 Michael Gritsch AUS 592050 Joel Kennedy AUS 687576 Liam Murphy AUS 687950 Riley Sprunger USA 464114 Jefferson Vlasnik USA 688450 Team Advisors Nationality AIAA Number Signature Dr. Ron Barrett USA 022393 Cees Bil AUS 077937 _____________________________________________________________________________________________ ii Acknowledgments The team would like to extend their gratitude towards those who lent their time and expertise throughout this design process: University of Kansas Representatives: Dr. Ron Barrett – Faculty Advisor Dr. Richard Hale Royal Melbourne Institute of Technology University Representatives: Dr. Cees Bil – Faculty Advisor DARCorp Representatives: Dr. Jan Roskam Dr. Willem Anemaat U.S.A. 2015 Unlimited Aerobatic Team: Mark Norwosielski Alligator Inc.: Ron Renz Federal Aviation Administration: Marv Nuss Wes Ryan OzAero Pty. Ltd.: David Pilkington All who attended the 2nd Annual “Snowbird Classic” Aerobatic Contest in Dunnellon, Florida for allowing us to observe, participate, and ask many questions. _____________________________________________________________________________________________ iii Table of Contents Page No. Acknowledgments ......................................................................................................................................................... ii Table of Contents........................................................................................................................................................... ii List of Symbols .............................................................................................................................................................. v List of Acronyms .......................................................................................................................................................... vi List of Tables ............................................................................................................................................................... vii List of Figures .............................................................................................................................................................viii Executive Summary ....................................................................................................................................................... 1 Compliance Matrix ........................................................................................................................................................ 2 Aircraft 3-Views ............................................................................................................................................................ 2 1. Mission Specification and Profile ................................................................................................................... 3 2. Historical Overview of Aerobatic Aircraft ...................................................................................................... 4 2.1 World War I ............................................................................................................................................. 5 2.2 Post War Barnstorming ............................................................................................................................ 5 2.3 Competitions and Modern Developments ................................................................................................ 6 2.4 Design Research Trip ............................................................................................................................... 7 3. STAMPED Vector Analysis, Initial Sizing ..................................................................................................... 9 4. Class I Configuration Selections ................................................................................................................... 18 4.1 Fuselage Configuration .......................................................................................................................... 20 4.2 Wing Configuration ............................................................................................................................... 20 4.3 Landing Gear .......................................................................................................................................... 21 4.4 Tail Configuration .................................................................................................................................. 21 4.5 Engine Configuration ............................................................................................................................. 22 4.6 Class I Configurations ............................................................................................................................ 23 5. Class I Design Procedure .............................................................................................................................. 24 5.1 Wing Layout .......................................................................................................................................... 24 5.2 Empennage Sizing .................................................................................................................................. 27 5.3 Undercarriage Integration ...................................................................................................................... 27 5.4 Weight and Balance ............................................................................................................................... 29 5.5 Longitudinal Stability ............................................................................................................................. 31 5.6 Lateral Stability ...................................................................................................................................... 31 5.7 Drag Polars ............................................................................................................................................. 32 6. Class I Propulsion System Layout and Integration ........................................................................................ 34 6.1 Potential Fuel Sources ............................................................................................................................ 34 6.1.1 100LL .............................................................................................................................................. 35 6.1.2 Motoring gasoline (Mogas) ............................................................................................................. 35 6.1.3 Jet A-1 ............................................................................................................................................. 36 6.1.4 Bio Fuels ......................................................................................................................................... 36 6.1.5 Electric ............................................................................................................................................ 36 6.2 Powerplant Selection .............................................................................................................................. 37 6.3 Leaded Fuel Replacement: Consideration .............................................................................................. 39 6.4 Propeller Selection ................................................................................................................................. 40 7. Down Selection from Class I Design Configurations .................................................................................... 41 8. Class II Cockpit and Fuselage Layout ........................................................................................................... 41 8.1 Fuselage Layout ..................................................................................................................................... 41 8.2 Cockpit Layout ....................................................................................................................................... 42 8.3 Cockpit Instrumentation - Single Seat Variant and Dual Variant Rear Seat .......................................... 42 8.4 Cockpit Instrumentation – Dual Variant Front (Subordinate) Seat ........................................................ 43 8.5 Flight Control Layout ............................................................................................................................. 44 9. Class II Design Procedure ............................................................................................................................. 44 9.1 Wing Design .......................................................................................................................................... 44 9.2 Undercarriage Integration ...................................................................................................................... 46 9.3 Weight and Balance