1. 1 System Design Review Mike Dumas Ben Scott Jason Darby Adam Naramore Gaetano Settineri Tim Sparks David Wilson EcoJet Group Two

2. 2 Market Review Target Sales to Fractional Operators, NetJets, FlexJets etc. Sales also to individual companies. Benefits Include: Reduced Fuel Costs as Cost of Petroleum Rises, Clean Renewable Fuels No Alternative Fuel Powered Business Aircraft are Currently in Operation

3. 3 Current Design Specs Parameters:Targets:Thresholds: GTOW (lbs)20,000< 25,000 Cruise Mach.85>.77 TO Field Length3500ft< 4000ft Passenger Cap:6≥ 4 Range1700 nm≥ 1500 nm Acquisition Cost$10 million≤ $15 million Operating Cost$1,000/hr≤ $1,500/hr

4. 4 Mission Range Based From Wichita Kansas Blue Circle = 1100nm Range Concentric with Wichita Kansas 1250nm to Seattle 1200nm to San Francisco 1250nm to Boston 1700 nm Range is enough to span both coasts and reach any destination in the Continental U.S. from Wichita

5. 5 Pugh’s Method Concepts Criteria Traditional Blended Wing Box Wing Sonic Cruiser Cabin Height+-SS Cabin WidthS+SS Takeoff LengthS++- Turnaround TimeS-SS Time to Overhaul---- Aircraft LengthS+S+ TO Weight+--- Range++++ # SeatsS+S+ CeilingSS++ Climb RateS++- Cruise Speed+--+ Operating Cost4231 Acquisition Cost4132 Totals (4+) (7S) (1-)(6+) (1S) (5-)(4+) (5S) (3-)(4+) (3S) (5-)

6. 6 General Concepts Traditional

7. 7 General Concepts Box Diamond Wing

8. 8 Primary Concept Preliminary CAD Drawings Diamond Wing Concept 2 turbo-fan engines S-duct intake Wingspan ≈ 41 ft Length ≈ 50 ft

9. 9 Cabin Layout Controls Pilot Seats Closets Door Refreshment Center Chairs Lavatory Similar to Hawker Series Aircraft

10. 10 Trade Studies Higher end aircraft cost roughly $10 million Cessna XLS Operating cost of $1500 per hour

11. 11 Jet-A Fuel ARWS (lb/ft 2 )GTOW (lbs)Fuel Weight (lb) Acquisition Cost ($M06)DOC ($/hr) 8702005256938.7471952.39 8801922651868.5871888.62 8901882149858.4821864.39 4901954856928.4811965.59 6901895151488.4621889.55 10902147270588.7682181.84 Sizing Trade Studies

12. 12 Sizing Trade Studies Bio-diesel Fuel ARWS (lb/ft 2 )GTOW (lbs) Fuel Weight (lbs) Acquisition Cost ($M06)DOC ($/hr) 8702240676618.9262196.69 8802157971818.7542139.16 8902117675208.642117.93 4902220579868.6512255.96 6902136872298.6202152.18 10902463996169.0592508.21

13. 13 Proposed Engine Specs Twin Spool Turbofan Engine 4 axial stage compression 1 centrifugal stage Compressor Ratio16 Fan Pressure Ratio2.5 Bypass Ratio3.25 Air Flow120 (lbm/s)

14. 14 Specific Fuel Consumption ONX On-Design engine analysis program Static Engine Results at Sea Level Conventional FuelAlternate Fuel Thrust5050 (lbf)5000 (lbf) SFC.58 (lbm/hr)/lbf.648 (lbm/hr)/lbf Fuel Heating (Q)18000 (Btu/lbm)16108.16 (Btu/lbm) Fuel / Air ratio0.03270.0368

15. 15 Thrust to Weight Ratio Constraint Diagram Green is the maximum possible Wing Loading Design Choice is 100 lb/ft 2 or less Thrust to weight goal is the shaded area L/D = 15

16. 16 Alternate Fuel Biodiesel Fuel –Range from B20 to B100 –Need approx 13% more fuel (comp with JetA) Based on fuel flow test data and Heat Capacity

17. 17 Alternate Fuel Proposed fuels –Methane, Biodiesel, Biokerosene Why Biodiesel? –Biodiesel requires few engine alterations –Biodiesel most mature of the proposed fuels –Current cost is cheaper ($3.62 per gal vs $4.89 (jet A) at John Wayne Airport in Orange County, CA –Safer to transport compared to Methane

18. 18 Alternate Fuel Emissions Benefits 50% Reduction CO 40% Hydrocarbon Reduction NOx Emissions Reduction Substantial Particle Emission Reduction Using Biodiesel Jet ABiodiesel

19. 19 Comparison with Citation XLS Citation XLSOur Design GTOW20200 lbs21176 lbs Range1798 nm1700 nm Cruise Mach #0.750.85 Wing Loading54 lb/ft 2 90 lb/ft 2 Acquisition Cost10.55 $M8.64 $M

20. 20 Looking to the Future Refined Analysis of Box Wing Concept –CFD analysis –Comparison to Traditional Concept –Maintain/Refine Cust. and Engr. Requirements Concept Selection –Geometry optimization –Propulsion optimization

21. 21 Questions?

22. 22 Backup Slides

23. 23 Engine Performance at Altitude http://en.wikibooks.org/wiki/Jet_Propulsion/Mechanics

24. 24 Trade Studies A maximum takeoff weight of 20,000 lbs Comparable to the aircraft database

25. 25 Trade Studies Research has shown the our customers value comfort as much as range. Aiming for high cabin volume at a lower cost then competitors