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Odyssey” Multi-Mission Aircraft GRADUATE DESIGN REPORT GEORGIA INSTITUTE OF TECHNOLOGY 28TH ANNUAL AHS STUDENT DESIGN COMPETITION 2011 Sylvester Ashok Raymond Beale Bhanu Chiguluri Michael Jones Jeewoong Kim Jonathan Litwin Marc Mugnier 2011 AHS Student Design Competition Jaikrishnan Vijayakumari Graduate Category Xin Zhang “ODYSSEY” MULTI-MISSION AIRCRAFT DEPARTMENT OF AEROSPACE ENGINEERING GEORGIA INSTITUTE OF TECHNOLOGY ATLANTA, GA, 30332 AND UNIVERSITY OF LIVERPOOL 28TH ANNUAL AMERICAN HELICOPTER SOCIETY STUDENT DESIGN COMPETITION GRADUATE CATEGORY Sylvester Ashok PhD Candidate Jonathan Litwin - Undergraduate Student [email protected] AE 4359 – Rotorcraft Design II [email protected] Raymond Beale - Graduate Student Marc Mugnier - Graduate Student (Team leader) AE 8900 – Special Problem AE 8900 – Special Problem [email protected] [email protected] Bhanu Chiguluri - Undergraduate Student Jaikrishnan Vijaykumar – Graduate Student AE 4359 – Rotorcraft Design II AE 6334 – Rotorcraft Design II [email protected] [email protected] Michael Jones – PhD Candidate Xin Zhang – PhD Candidate (University of Liverpool) AE 6334 – Rotorcraft Design II [email protected] [email protected] Jeewoong Kim - Graduate Student Dr. Daniel P. Schrage – Principal Advisor and Instructor AE 6334 – Rotorcraft Design II AE 6334 – Rotorcraft Design II (SPRING 11) [email protected] [email protected] 2011 AHS Student Design Competition ii Graduate Category Acknowledgements The Odyssey design team would like to acknowledge the following people and thank them for their assistance and advice during the entire project: Dr Daniel P. Schrage – Professor, Department of Aerospace Engineering, Georgia Institute of Technology Dr Dimitri N. Mavris – Director of ASDL, Department of Aerospace Engineering, Georgia Institute of Technology Dr Lakshmi Sankar – Regents Professor, Department of Aerospace Engineering, Georgia Institute of Technology Dr. Emre Gunduz – Postdoctoral fellow, Department of Aerospace Engineering, Georgia Institute of Technology Dr Byung-Young Min – Postdoctoral fellow, Department of Aerospace Engineering, Georgia Institute of Technology Wg. Cmdr. Martin Mayer Mr Alex Robledo Mr Tom Lawrence Mr Mike Roberts Mr Robert Loewy Mr Apinut Sirirojvisuth Mr Mike Osmon Ms Tiffany Adams Special Acknowledgments The Odyssey design team would like to thank especially Mr Etienne Baer for his unique contribution to the project and Mr Robert Scott and his team for their valuable support on the cost analysis. 2011 AHS Student Design Competition iii Graduate Category TABLE OF CONTENTS TABLE OF CONTENTS ............................................................................................................................... IV LIST OF FIGURES ...................................................................................................................................... VI LIST OF TABLES ...................................................................................................................................... VIII ACRONYMS ............................................................................................................................................. IX NOMENCLATURE ..................................................................................................................................... X GENERAL INTRODUCTION ........................................................................................................................ 1 ODYSSEY KEY FEATURES AND TECHNOLOGIES ......................................................................................... 4 ODYSSEY SPECIFICATIONS ........................................................................................................................ 5 TOP-LEVEL REQUIREMENTS ..................................................................................................................... 6 APPENDIX A VEHICLE CONFIGURATION AND SELECTION .................................................................. 7 A.1. Helicopter Missions ................................................................................................................. 7 A.2. Cabin configuration ................................................................................................................ 9 A.3. Additional requirements ....................................................................................................... 10 A.4. Initial concept selection ........................................................................................................ 15 A.5. Hub selection and IBC system ............................................................................................... 16 A.6. Comparison between HH-60G Pavehawk and Odyssey ........................................................ 18 APPENDIX B CONCEPT INITIAL SIZING AND PERFORMANCE ............................................................ 19 B.1. Initial sizing ........................................................................................................................... 19 B.2. Performance evaluation ....................................................................................................... 20 B.3. Initial Performance without the auxiliary propulsion ........................................................... 22 APPENDIX C MAIN ROTOR GEOMETRY AND AIRFOIL DESIGN ......................................................... 23 C.1. Rotor radius selection and optimization ............................................................................... 23 C.2. Airfoil selection ..................................................................................................................... 25 C.3. Taper ratio and linear twist selection ................................................................................... 27 C.4. Final blade planform design ................................................................................................. 30 APPENDIX D FUSELAGE DESIGN ...................................................................................................... 31 D.1. Validation of the CFD code ................................................................................................... 31 D.2. Drag Analysis ........................................................................................................................ 32 D.3. Fuselage aerodynamics and forces ....................................................................................... 34 APPENDIX E AUXILIARY PROPULSION DESIGN ................................................................................ 36 E.1. Final Design Configuration.................................................................................................... 38 APPENDIX F ENGINE DESIGN .......................................................................................................... 40 F.1. Baseline engine GE CT701C................................................................................................... 40 F.2. Rubberized engine ................................................................................................................ 40 F.3. Single Engine Hover Ceiling................................................................................................... 40 F.4. Final Engine configuration .................................................................................................... 42 APPENDIX G ODYSSEY PERFORMANCE SUMMARY ......................................................................... 45 G.1. Power curves ......................................................................................................................... 45 G.2. Speed performance with All Engines On (AEO) ..................................................................... 47 2011 AHS Student Design Competition iv Graduate Category G.3. Engine failure condition performance .................................................................................. 48 G.4. Payload Range diagram ........................................................................................................ 50 G.5. Performance summary ......................................................................................................... 51 APPENDIX H WEIGHT BREAKDOWN AND MATERIAL SELECTION ..................................................... 52 H.1. Weight calculation of the fuel system .................................................................................. 52 H.2. Material selection ................................................................................................................. 52 H.3. Stealth mode ......................................................................................................................... 54 H.4. Empty weight breakdown ..................................................................................................... 55 APPENDIX I YAW CONTROL AND GURNEY FLAPS ............................................................................... 56 APPENDIX J DRIVE SYSTEM ................................................................................................................. 59 J.1. Requirements ........................................................................................................................ 59 J.2. Conceptual Design ................................................................................................................ 59 J.3. Gear Train Sizing ..................................................................................................................
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