P Bradshaw
EDXCW
Southampton 1
P Bradshaw
EDXCW Wing & Aerodynamics Skill Group
Airbus UK Reference: EDXCW/ R+T/ PB/ 20441A
Commercial Aircraft Conceptual Design
- Some Considerations
15th November 2005
Future Projects Today
• Whole aircraft sizing and optimisation:
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Straightforward
modelling of physics for many
design iterations.
Realistic assumptions.
Relies on intelligent use of constraints &
performance trends.
Technology understanding.
Realism through accurate component audit &
re-run.
Current EDX Capabilities
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Note: Only typical tasks & timing illustrated
EDXG, Overall a/c
EDXC, Disciplines & Components
What are Customers’ Needs ?
• Future concept selection will be chosen to fulfill the
requirements to be met…………
Range
Payload
Noise
Safety
Operating cost – (Profit for airlines !)
Manufacturing Cost (Profit for us !)
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Cheap to maintain (DMC)
Reliable etc etc etc (OI, MMEL)
•That means understanding the options available to us, and the challenges
ahead – does the latter infer that particular technologies have to be used,
whether we like it or not ??
Activities,
Variety
ofillustrations
Activities
New products & derivatives, Configuration developments
62.4m
18.2m
56.0m
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58.0m
Component Concept Integration
High Lift
Wing
Engine
Fatigue
performance
Stiffness
Loads & Controls
Aerodynamic
loading
Load
alleviation
Drag reduced
Integration is the technology value multiplier
Technology
enablers
+
Technology
Integration
Skin Thickness (upper skin)
20
18
16
Technology
improvement
14
t [mm]
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Design constraints
Technology needs
12
10
8
6
4
2
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
 [1]
Composite
technology
Modelling
1
Aerodynamics,
aero elastics
Product Safety
• Less than 15% of all accidents are caused by
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manufacturer related issues.
• 85% of all incidents due to operational factors, ie flight
operations, weather, ATC.
• Closing the gap requires more focus on human factors
• Incident reporting key to improving safety environment
Fatal Accident/ Million departures (@ end 2004)
1st generation:
Early jet
Fatal accident
per million departures
2nd generation:
2nd jet generation
3rd generation:
Glass-cockpit
Nav display
FMS
4th generation:
FBW
Flight Envelope
Protection
10.00
9.00
8.00
Includes western built jets
Excludes training, flight test, war, terrorism
7.00
6.00
5.00
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4.00
1st generation
3.00
2.00
4th generation
1.00
3rd generation
0.00
1
2
3
4
5
6
7
8
2nd generation
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Some Key Questions
1  What are the multiple challenges for aircraft & airlines in
the next decade
2  Which aircraft configurations, evolutionary or revolutionary,
will offer the opportunities to meet these challenges
3  Which is the best selection of concepts and technologies
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that Airbus should be preparing in order to face all
launching assumptions
The focus is to be shifted from Product Strategy
to Capability Development
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Why do Things Differently?
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property of AIRBUS UK LTD. No intellectual property rights
are granted by the delivery of this document or the disclosure
of its content. This document shall not be reproduced or
disclosed to a third party without the express written consent
of AIRBUS UK LTD. This document and its content shall not
be used for any purpose other than that for which it is
supplied.
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
The statements made herein do not constitute an offer. They
are based on the mentioned assumptions and are expressed
in good faith. Where the supporting grounds for these
statements are not shown, AIRBUS UK LTD will be pleased to
explain the basis thereof.