Supersonix Inc. Conceptual Design Review Of a high speed commercial air transport Akshay Ashok, Nithin Kolencherry, Steve Skare, Michael McPeake, Muhammad Azmi, Richard Wang, Mintae Kim, Dodiet Wiraatmaja, Nixon Lange 4/30/2009 Supersonix Inc. 30 April 2009 Team 2 Conceptual Design Review Table of Contents TABLE OF CONTENTS ........................................................................................................................... 2 TABLE OF FIGURES ............................................................................................................................... 4 LIST OF TABLES ...................................................................................................................................... 6 EXECUTIVE SUMMARY ......................................................................................................................... 7 INTRODUCTION...................................................................................................................................... 8 Opportunity Description ........................................................................................................................................ 8 Mission Statement ................................................................................................................................................. 9 Market Analysis and Concept of Operations .......................................................................................................... 9 SELECTED AIRCRAFT CONCEPT ....................................................................................................... 9 AIRCRAFT DESIGN MISSION ............................................................................................................. 13 AIRCRAFT DETAILED SIZING ........................................................................................................... 14 Primary Functions ................................................................................................................................................ 15 A/C Geometry ......................................................................................................................................................... 15 Mission Segments ................................................................................................................................................... 15 Component Weights ............................................................................................................................................... 16 Overpressure .......................................................................................................................................................... 17 Airfoil and Lift Coefficients ..................................................................................................................................... 17 Constraints .............................................................................................................................................................. 17 Stability ................................................................................................................................................................... 18 Wing Loading .......................................................................................................................................................... 18 Auxiliary Functions .............................................................................................................................................. 18 Engine Modeling ..................................................................................................................................................... 18 Drag Modeling ........................................................................................................................................................ 20 Transonic Drag ..................................................................................................................................................... 24 CARPET PLOT ....................................................................................................................................... 25 AIRCRAFT CONCEPT/DESCRIPTION ............................................................................................. 29 AERODYNAMICS ................................................................................................................................... 32 Airfoil Selection ................................................................................................................................................... 32 Drag Buildup ........................................................................................................................................................ 38 SONIC BOOM .......................................................................................................................................... 40 PERFORMANCE ..................................................................................................................................... 47 V-N Diagram ........................................................................................................................................................ 47 Range Diagram .................................................................................................................................................... 48 PROPULSION ......................................................................................................................................... 48 Inlet ..................................................................................................................................................................... 48 Engine Description ............................................................................................................................................... 50 Page 2 of 72 Supersonix Inc. 30 April 2009 Team 2 Conceptual Design Review Nozzle Design ...................................................................................................................................................... 51 STRUCTURES ......................................................................................................................................... 53 Engine mounting .................................................................................................................................................. 56 Landing gear ........................................................................................................................................................ 56 Material selection ................................................................................................................................................ 57 WEIGHTS AND BALANCE ................................................................................................................... 58 Aircraft Component Weight ................................................................................................................................. 58 STABILITY AND CONTROL ................................................................................................................ 61 Static Longitudinal Stability ................................................................................................................................. 61 Control Surface Sizing .......................................................................................................................................... 62 COST ANALYSIS .................................................................................................................................... 63 RDT&E Cost .......................................................................................................................................................... 63 Direct Operating Costs (DOC) ............................................................................................................................... 64 Indirect Operating Costs (IOC) ............................................................................................................................. 65 Cost Summary...................................................................................................................................................... 66 SUMMARY ............................................................................................................................................... 66 Additional work ................................................................................................................................................... 68 REFERENCES .......................................................................................................................................... 69 APPENDIX............................................................................................................................................... 71 Engine Performance Curves (from Raymer App.E) ............................................................................................... 71 Composite carpet plot ......................................................................................................................................... 72 Page 3 of 72 Supersonix Inc. 30 April 2009 Team 2 Conceptual Design Review Table of Figures Figure 1: Lower Walk-Around (Takeoff Climb Phase) ..................................................................