sailplane wing optimization

7/24/2019 Sailplane Wing Optimization

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Foot Launch SailplaneWing Optimization

Presented by:

Constantin Nicolinco

Ahmad Kalai


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!ntroductionSailplanes: aircra"ts #ithout engines

Launched $ia aero to#% #inch%slingshot% or e$en automobile to#


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!ntroduction&ost Sailplanes optimized "or crosscountry soaring

Narro# and slender #ings% lo# drag%but high ta'e(o) speed


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&aupin Carbon *ragon*e$eloped in the late +,-s

*esigned "or "oot launch

.(LOF o"//01 m2s


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Problem StatementMinimize the takeof speed o the

Carbon Dragon microlit sailplane by

changing several wing parameters,while maintaining the wing loadingunder !kg"m# and a total empty

weight o no more than $%kg&


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Wor' *istributionConstantin N

Structure Optimizer

45isting *esign 6e$ie# 6eport Writing

Ahmad K

Aerodynamic Sol$er

&*F !ntegration CA*


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45isting Con7gurationParameter Value

Length 10/ m

Wingspan /809/ m

Wing Area /9091 m;

Aspect Ratio /01:/Airfoil Cul$er S*

Root Chord 1/0 in

Tip Chord 0< in

G Limits =2( >0


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*esign .ariables%

Constraints% andParameters%esign Varia#les

Wing span

@aper ratio

6oot chord

Parameter

Cruise Altitude

Air"oil

&aterial

Fuselage and 4mpennage

Weight and Structure

Constraint Value "S&$&a5 @a'eo) Speed D /, m2s

&@OW D >, 'gWingspan D /< m

&a5 Wing Load D /+ 'g2m&a5 Wing

*eEection

D , degrees

&inimum 6oot

Air"oil @hic'ness

,0,< m

@aper 6atio , D G /


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&*O Architecture andOptimizer

&*F Architecture

H0A0 OptimizerH0A0 Optimizer

Structural Sol$erBFinite 4lement Iased

Aerodynamic Sol$erB&odi7ed @ornado

*esign.ariables

*esign.ariables Weight&a5 CL

Forces G&oments


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Aerodynamic Sol$er .L&

&odi7ed $ersion o"

@ornado 4liminates user input

Automates Analysis

Obtains CLma5


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CLma5 *etermination

Created a ne# "unction #ithin@ornado

!ncreases angle o" attac' untilany section goes abo$e limit

Limit obtained using the *

ma5 CL

Conser$ati$e approach sincestops #hene$er a singlesection stalls


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.alidation Cessna />

NACA 9/

Span: 8


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Structural Sol$erFinite 4lement based B/, elements

Sa"ety "actor o"

sailplane wing optimization

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