1. Smart Intelligent Aircraft Struture 1

2.  structures which have the ability to adapt to environmental conditions
according to the design requirements
 Aircraft Structures offers significant improvements in aircraft total
weight, manufacturing cost and, above all, operational cost
 its helps to improve the aircraft’s life cycle and reduce its maintenance.
 Ability to decrease airframe generated noise and hence reduce the
effect of air traffic noise near airports
 cruise drag reductions have a positive effect on fuel consumption and
required take-off fuel load
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3. Aircraft wing made intelligent way,
It have smart characteristics just like
Bird
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4. intelligently controlling the
wing’s moving surfaces using
on-board computer systems,
the wing will be “morphed”
while airborne – tailoring it
for maximum aerodynamic
efficiency in the various
phases of flight
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5. An adaptive compliant wing is a wing which is flexible so that aspects of its
shape can be changed in flight
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11.  Minimize or eliminate assembly requirements
 Excellent repeatability since there is no backlash
 No joint means no friction ,backlash, or need of lubrication
 Can easily couple with Morden actuators, such as piezoelectric, shape-
memory alloy, electro thermal, electrostatic , fluid pressure and
electromagnetic actuator
 Create motions not possible with conventional rigid devices
 Material friendly can be built from any highly resilient material, including
steel ,Aluminium ,nickel
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15. Smart materials
“smart responds to a stimulus with one
predictable action”
• normal materials have limited responses
• smart materials have appropriate responses
• ... but response is the same every time
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16. What the airframe requires
Bending
Bending and
Torsion
Impact
Shear stress due to trans-
verse shear and torsion
Compression due to bending,
stability, static strength,
corrosion resistance
High local
loads
Hoop
stress
Impact
Impact
Impact
Shear
stress
Hoop stress and longi-
tudinal stress
Longitudinal stress
Static/residual strength
Crack growth
Upper skin:
Compression/stability
Lower skin:
Tension/crack growth
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19. By shearing wisdom of nature we are closed to nature perfection
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22. Smart Intelligent Aircraft Struture 22

23. CFRP Floor Beams
for Upper Deck
CFRP Wing
Ribs
CFRP Section
19.1
CFRP Section
19
GLARE®
CFRP Center Wing BoxIntegral Structures (LBW)
More Ti & New
Ti-processing
(electron beam welding)
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24. Carbon nanotubes have a number of valuable and unique properties,
including:
High thermal and electrical conductivity
Optical properties
Flexibility
Increased Stiffness
High tensile strength (100 times stronger than steel per unit of weight)
Light weight
Range of electro-conductivity
Ability to be manipulated yet remain strong
When applied to products, these properties provide tremendous
advantages. For example, when used in polymers, bulk carbon nanotubes
can improve the electrical, thermal, and electrical properties of the
products.
Carbon nanotube
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26. Like Nerve system of bird
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33. Biomimetics: Lotus effect
• most efficient self-cleaning plant
= great sacred lotus
(Nelumbo nucifera)
• mimicked in paints and
other surface coatings
• pipe cleaning in oil refineries (Norway)
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34. Carbon nanotube networks
Through dissolving a linear polymer inside a solid three-dimensional epoxy
matrix, so that they are miscible to each other, the linear polymer becomes
mobile at a certain temperature When carbon nanotubes are also incorporated
into epoxy material, and a direct current is run through the tubes, a significant
shift in sensing curve indicates permanent damage to the polymer, thus ‘sensing’
a crack. When the carbon nanotubes sense a crack within the structure, they can
be used as thermal transports to heat up the matrix so the linear polymers can
diffuse to fill the cracks in the epoxy matrix. Thus healing the material.
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36.  By using right material in right palace
 Intelligent Design
 Adaptive wing structure
 Self monitoring
 Self healing
 Self cleaning
Step by step airframe is moving ever closer
To nature perfection to bird
By shear the sky with bird we can rediscover
The wisdom of nature
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