Application of CPACS to existing

software (PANUKL, SDSA, OPTOM)

Toulouse 25-27.11.2014

Tomasz Goetzendorf-Grabowski,

Jacek Mieloszyk Warsaw University of Technology, Poland

Dawid Mieszalski MSP, Warsaw, Poland

4th Symposium on Collaboration in Aircraft Design

4th Symposium on

Collaboration in Aircraft Design

Outline • Genesis

– SimSAC – CEASIOM

– OPTOM (optimization needs application in batch mode)

• Searching for common format of data

• Tools included in MADO – our code:

• PANUKL

• SDSA

• OPTOM

– external code

• XFOIL

• CALCULIX

• Conclusions

4th Symposium on

Collaboration in Aircraft Design

Genesis

3

• in the beginning there

was chaos

• after that was SimSAC

4th Symposium on

Collaboration in Aircraft Design

Genesis

4

1

0time

VP

Classical approach

verification inflight tests

verification inground tests

product definition product development

flight testing:- improvement and verification of data, eg. aerodynamic data

ground-facility testing:- design improvement,- design verification,- data-set generation.

represen-tation fidelity

The vision

higher fidelity

earlier

Idea of SimSAC

4th Symposium on

Collaboration in Aircraft Design

CEASIOM - architecture

5

4th Symposium on

Collaboration in Aircraft Design

Idea of MADO

STRENGTH ANALYSISSTABILITY & CONTROLPERFORMANCE

SDSA

AERODYNAMICSPANUKL

CAD

CFDVLM

OPTIMIZATION

ALGORITHMS

4th Symposium on

Collaboration in Aircraft Design

Data flow in

MADO

(Multidiscipli

nary Aircraft

Design and

Optimization)

4th Symposium on

Collaboration in Aircraft Design

Main problems

• common language for data flow

• most of application require interaction:

– geometry (CAD systems, AMB, etc.)

– grid preparing (preprocessors of CFD

packages: VSARO, MGAERO, PANUKL)

– FEM analysis (CalculiX)

– Stability analysis (SDSA)

4th Symposium on

Collaboration in Aircraft Design

PANUKL - stages of analysis

http://www.meil.pw.edu.pl/add/ADD/Teaching/Software/PANUKL

Main types of objects

4th Symposium on

Collaboration in Aircraft Design

PW Zoom – currently in Antarctic

(MONICA project)

wings

fuselage

4th Symposium on

Collaboration in Aircraft Design

Wings from sections – similar to CPACS

Airfoils are defined in separate files – four different formats are accepted (xfoil, koo, prf2, prf4)

4th Symposium on

Collaboration in Aircraft Design

Fuselage creation – similar to CPACS

Fuselage geometry description

4th Symposium on

Collaboration in Aircraft Design

Ms2editor

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Collaboration in Aircraft Design

MS2 and CPACS comparison

CPACS

xrot

yrot

zrot

wing-fuselage paneling:

master/slave/independent

?

<rotation>

<x>

<y>

<z>

MS2

MS2 and CPACS comparison

WINGS

Module wings

modules:

– root

– line

– equi.line

– arc 4th Symposium on

Collaboration in Aircraft Design

line arc

4th Symposium on

Collaboration in Aircraft Design

Up contour

X

Y

Z

Down contour

Side contour H

Spine

Convexity curve up/down

Bend distance Bend angle

New fuselage definition

4th Symposium on

Collaboration in Aircraft Design

Nacelles (as fuselages)

4th Symposium on

Collaboration in Aircraft Design

Nup

Ndown

Conv.

Fact.

Up

Conv.

Fact.

Down

Zup

Zdown

Y L

(X0,Y0,Z0)

Swirl Up

Swirl Down

Nacelles (as wings)

4th Symposium on

Collaboration in Aircraft Design

Examples of

advanced

meshes

4th Symposium on

Collaboration in Aircraft Design

Innovative airplanes mesh in

CPACS

CPACS

Module

structures

One direction export.

Is it satisfactory solution?

XML

MS2

Based on

sections

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Collaboration in Aircraft Design

Export to CalculiX

- Loads

- Constrains

- Material

- Other

- Stress

- Deflection

- Other PANUKL

- Geometry

- Pressure

distribution

CalculiX

4th Symposium on

Collaboration in Aircraft Design

Export to CalculiX

CPACS ?

4th Symposium on

Collaboration in Aircraft Design

SDSA architecture

Common

language

(CPACS?)

Interface CPACS-SDSA

SDSA Output

(CPACS?)

4th Symposium on

Collaboration in Aircraft Design

MADO – MAV optimization

The worst in population The best in population

4th Symposium on

Collaboration in Aircraft Design

Geometry for

optimization

MADO – Airfoil optimization

external application - Xfoil

Optimization of airfoil NACA 23012 for mini UAV (Re=200000)

FOBJ = 1/CL , variables: max. thickness, max camber, XG, XF

Applied algorithm – Monte Carlo

4th Symposium on

Collaboration in Aircraft Design

Open problems

• AMBCPACSSDSA interface

(AMBSDSA already exist!)

• PANUKLCPACSSDSA interface?

(PANUKLSDSA already exist!)

• output from stability analysis (SDSA)

included in CPACS?

• outputs from other applications?

• CPACS code to input/output

(read/write) the XML structure !!!

Thank you for attention