1. 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

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

3. 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
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” ( LR)
Reducing field length by 50% relative to the
large twin-aisle

4. 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

6. 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

7. 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:

8. 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

9. 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

10. 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 B

11. 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

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

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

14. 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.)

15. 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
Next Steps
Constraint Analysis
Sizing code refinement
Acquire Propulsion systems data
Preliminary wing design