boeing vs airbus - composite materials
DESCRIPTION
What are composite materials?Why to use it ? Advantages/DesadvantagesExploitation & usage in nowdaysHistorical ReferenceConclusionTRANSCRIPT
Title of Presentation
Preda Alexandru-Daniel
Group 932
Faculty of Aerospace Engineering
VS
TOPICS :
What are composite materials?
Why to use it ? Advantages/Desadvantages
Exploitation & usage in nowdays
Historical Reference
Conclusion
What are composite materials ?
Composite materialsare materials made from two or more constituent materials with significantly differentphysicalorchemical properties, that when combined, produce a material with characteristics different from the individual components. The individual components remain separate and distinct within the finished structure.
In aviation the common composite materials are:
Fiberglass
Carbon Fiber
Fiber reinforced matrix
or a combination of any of these
AIRBUS A350 XWB :
Since June 2013 Airbus is flight testing the A350XWB. The latest Airbus now boast a 53% usage of composite material among its long lists of new features.
Over 70% of the A350 XWBs weight-efficient AIRFRAME is made from advanced materials combining :
Composites 53%53Titanium 14%14Advanced Al Alloys 19%19Others 14%14
The NOSE section uses a mix of:
AIRBUS A350XWB
Sales
Al / Al - Li AlloysCompositesTitanium55405
Most of the A350 XWB's WING is made of the lightweight carbon fiber reinforced plastic (CFRP) composites, including its upper and lower covers , measuring 32m long x 6m wide, making them the largest single aviation parts ever made from carbon fiber.
BOEING 787 DREAMLINER
Weight & consumption differences :
Both manufacturers claims a 20% weight loss using the composite materials.
On the other hand, we can observe a difference on the fuel consumption :
AIRBUS BOEING
Another advantages of composite materials are :
Polution reduction;
Noise reduction;
More pleasant environment for passengers (increase cabin humidity - structure is less susceptible to condensation and is highly resistant to corrosion);
Provide structural strength comparable to metallic alloys but at a lighter weight;
Reduce maintenance costs and labor work hours ( ex. : the comp. tail of B777 is 25% larger than the Al tail of B767, yet require 35% less labor work hours).
Disadvantages :
High costs & complexity of repairs;
Over 150C the resin used in C.M. release toxic fumes and microparticles into the air;
Temperatures above 300 degrees can cause structural failure.
Historical Timeline :
-50s : B707
-75s : A300
-80s : A310 / B757
-85s : A320 / B767
-90s : A340 / B777
-2005 : A380
-2009 : B787 DRML
-2013 : A350 XWB
Usage of Composite Materials
Boeing50's75's80's85's90's2005 '09 '130.020.027.0000000000000007E-20.120.5Airbus50's75's80's85's90's2005 '09 '130.030.050.120.10.250.53
Conclusion :
With Airbus and Boeing fighting each other over fuel efficiency, passenger comfort and environmental impact the use of composite of commercial aircraft will keep growing in the future.
The experience from the military (they have relatively large development budget) aircraft will also help scientist to gather more information about the behavior of the composite materials on aircraft.
One more thing
There is another market for composite material which is represented by the RICH PEOPLE that use carbon fiber for :
Thats all folks ! Hope you like it!