System Requirements Review New Environmentally Responsible Design Nayanapriya Bohidar Alex Fickes Anthony Malito Keyur Patel Danielle Woehrle Matt Dienhart Dean Jones Ricardo Mosqueda Dustin Souza

Outline Mission Statement Market Competition Concept of Operations Design Requirements Design Comparison New Technologies and Advanced Concepts Sizing Code Summary

Mission Statement To design an environmentally responsible aircraft for the twin aisle commercial transport market with a capacity of 300+ passengers, NASA’s N+2 capabilities, and an entry date of 2020-2025. NASA’s N+2 technology benefits include: Reducing cumulative noise by 42dB below Stage 4 Reducing take-off and landing NOx emissions to 75% below CAEP6 levels Reducing fuel burn by 50% relative to “large twin-aisle performance” (777-200LR) Reducing field length by 50% relative to the large twin-aisle

Boeing Market Forecast Twin-aisle aircraft represent the fastest-growing market segment Growth fueled by emerging economies (Asia-Pacific, Latin America, Middle East, etc.) Image Source: Boeing Market Forecast

Customers Asia-Pacific, Middle East, Latin America Low Cost Carriers (LCC’s) Passengers looking for cheap hub-to-hub and nonstop flights Airliners looking for high capacity aircraft to meet increasing market demand

Competition High-Speed Rail Systems Boeing 737, Airbus A319 Map of proposed high-speed rail systems in China, along with estimated travel times from Beijing Image Source: www.hasea.com

Concept of Operations Operational City Pairs Runway Length (ft) Flight Time (Min) Origin Destination Route Distance (nmi) 0.75 Mach 0.85 Tokyo, Japan Sapporo, 8,202 9,843 593.91 101.91 93.45 Seoul, South Korea Jeju, 10,499 323.86 69.21 64.60 Sydney, Australia Melbourne, Australia 8,301 11,998 509.89 91.73 84.47 Beijing, China Shanghai, 10,827 779.22 124.35 113.25 Hong Kong, Taipei, Taiwan 12,467 10,991 580.10 100.24 91.97 Naha, 803.39 127.27 115.83 Reference: Centre for Asia Pacific Aviation

Concept of Operations Design Mission 400 Passengers (Max Payload) 4,000 nmi Range (Tokyo-NHD to New Delhi-DEL: 3,200nmi) Runway Length 8,300 ft (Takeoff) 200 nmi 4000 nmi

Design Requirements Requirement Threshold Target Cruise Mach 0.75 0.85 Range 3,000 nmi 4,000 nmi Field Length 8,300 ft 5,800 ft Fuel Burn 33% reduction 50% reduction NOx Emissions 50% below CAEP 6 75% below CAEP 6 Noise Reduction -32 dB (cum. below Stage 4) -42 dB Pax Capacity 350 400 *Reference Vehicle B737-700

Design Comparison Requirement Target Design B767-300 B777-200 B737-700 Cruise Mach 0.85 0.84 0.785 Range 4,000 nmi 3,780 nmi 5,240 nmi 3,440 Field Length 5,800 ft. 7,907 ft. 8,202 ft. 8,300 ft. Pax Capacity 400 350 440 149 Reference: Boeing.com

New Technologies and Advanced Concepts PROPULSION Geared Turbofan Unducted Fan (UDF) Bio-Diesel Trailing Edge Brushes Blended Wing Body Spiroid Winglets AERODYNAMICS

New Technologies and Advanced Concepts Dynamics & Controls Fly By Wireless Morphing Trailing Edge Composites Bonded Skin Panels Structures

Sizing Code Progress We used three sizing codes: Simple – Incorporates design mission range, (L/D)max and number of passengers Initial – Incorporates all of the above in addition to T/W and W0/S ratios. MATLAB – Incorporates all of the above and the entire design mission (i.e. loiter time, emergency landing etc.)

Summary Market forecasts predict a need for higher capacity aircraft to fly heavily trafficked routes 400 passenger, 4000 nmi range, N+2 compliant aircraft scheduled for deployment in 2020-2025 Next Steps Constraint Analysis Sizing code refinement Acquire Propulsion systems data Preliminary wing design