...........whoever want to design an airplane easily contact me ..........
these designs are done by using CATIA V5's Surface module
Sunday, 30 December 2012
Friday, 23 November 2012
Friday, 16 November 2012
Sunday, 11 November 2012
Monday, 8 October 2012
Airplane Design Concepts for Aero
Airplane Design
Conceptual Design
Preliminary Design
Detail Design
Conceptual Design
Ø Requirements
Ø Weight of the airplane – first estimate
Ø 
Critical
Performance analysis
Critical
Performance analysis
·
Maximum Lift Coefficient CL
·
Lift – to – Drag Ratio L/D
·
Wing loading W/S
·
Thrust – to – Weight Ratio
T/W
No
Ø Configuration layout – shape and size of the airplane on a drawing
(or) computer screen
Ø Better weight estimate
Ø 
Performance
analysis – does the design meet (or) exceeds requirements
Performance
analysis – does the design meet (or) exceeds requirements  |
Yes
Ø Optimization - is
it the best design
Ø Latitude
Ø The overall shape
Ø Size
Ø Weight
Ø Performance
Ø The shape and
size of the wing
ü Swept Back
ü Swept Forward
ü Straight
Ø The location of
the relative to the fuselage
Ø The shape and
size of the horizontal and vertical stabilizer
Ø The use of canard
or not
Ø Engine size and
placement
Ø Aerodynamics
Ø Propulsion
Ø Flight
performance
Ø Landing gear is
to retract into the wing rather than the fuselage or engine nacelle
Requirements
Ø Range
Ø Take of distance
Ø Stalling velocity
Ø Passenger
capacity
Ø Maximum velocity
Ø Rate of climb
Ø Rate of dive
Ø Landing distance
Ø Maximum load
factor
Ø Maximum turn rate
and sometime minimum turn radius
Ø Service ceiling
Ø Cost
Ø Reliability and
maintainability
Ø Maximum size
(hangers)
Ø Interior and
exterior mechanical aspects of the airplane
Weight of the airplane
Ø The gross takeoff
weight
Ø Weight estimate
Ø Albeit crude
Ø More weight –
more drag
Ø Engine with more
power – more weight
Critical performance parameter
Ø Maximum Lift
co-efficient CL
Ø Lift – to – Drag
ratio usually at cruise L/D
Ø Wing loading W/S
Ø Thrust - to -
Weight ratio T/W
Ø Achieve the
performance to estimate W/S, T/w
Configuration layout
Ø Drawing the shape
and size of the airplane
Ø Critical
performance parameter with initial weight estimate given the information to
approximately size of the airplane and to draw configuration
Better weight estimate
Ø Overall size and
shape of the airplane
Ø Improved estimate
weight
Ø More detail
estimate of the fuel weight
Performance Analysis
Ø High speed is
critical
Ø The high wing
loading that allow this high speed
Ø Increase the
takeoff and landing distance
Optimization
Ø Parameters T/W,
W/S
Constraint Diagram
Ø Solution space
for the airplane design
Ø Thrust – to -
Wing ratio
Ø Wing loading
Ø Plot of the sea –
level thrust – to – takeoff wing ratio T0/W0 versus the
wing loading at takeoff W0/S
Ø Take off
constraint
Ø Landing
constraint
Ø Sustained level
turn
Interim Summary
Ø Make a selection
of the airfoil section
Ø Determine the
wing geometry
ü Aspect ratio
ü Sweep angle
ü Taper ratio
ü Twist
ü Incidence angel
relative to fuselage
ü Dihedral,
vertical location on the fuselage
ü Wing tip shape
Ø Choose the
geometry and arrangement of the tail
Ø The size, number
and placement of the engine
Ø High Lift device
Preliminary Design
Ø Major, minor changes
Ø Structural and
control system analysis and design takes place
Ø Substantial wind
tunnel testing
Ø Computational
fluid dynamics (CFD) calculation of the complete flow field over the airplane
configuration
Ø The drawing
process
Ø Outside skiing of
the airplane
Detail Design
Ø The nuts and
bolts of airplane design
Ø Aerodynamic,
propulsion, structure, performance, and flight control analysis
Ø Rip, spar, and
section of skin now takes place
Ø The size, number
location of fasteners [rivets, welded joints]
Ø Tools and jigs
Ø Flight simulator
Friday, 21 September 2012
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