application of a distributed mdao framework to the design ... · interface 3/3: systems design...
TRANSCRIPT
Application of a distributed MDAO framework to
the design of a short- to medium-range aircraft
www.DLR.de • Chart 1 > Lecture > Author • Document > Date
Erwin Moerland, Thomas Zill, Björn Nagel
Holger Spangenberg, Holger Schumann, Peter Zamov
DLR, Institute of Air Transportation Systems
DLR, Institute of Flight Systems
Contents
www.DLR.de • Chart 2 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
MDO advancing multidisciplinary design & optimisation
Case study design study guiding the integration
System-of-systems approach combining aircraft predesign & design of aircraft systems
Design interfaces coupling both design methods
Initial integration setup aircraft design results, systems design approach
Conclusion conclusive remarks & future challenges
Multidisciplinary Design & Optimisation Definition introduced by Prof. I. Kroo and Prof. J.J. Alonso, Stanford University
www.DLR.de • Chart 3 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1st generation
analysis-based design
computations
• optimisation algorithms
• approximation techniques
COM
COM
Power Equation LP Spool
Power Equ. HP Sp.
HPT Cooling
COM
COM
Power Equation LP Spool
Power Equ. HP Sp.
HPT Cooling
Workflow management
2nd generation
• networked computing
• # disciplinary interfaces
3rd generation
Optimisation assisted
design in teams
• management of knowledge
• collaboration of engineers
and tools
Actors within system-of-systems design approach
www.DLR.de • Chart 4 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
Operators • gather resources • establish design teams
OA
D k
now
ledge
●
Workflow
integrators
• setup design workflows • integrate analysis modules
●
System
experts
• provide disciplinary knowledge • generate analysis modules
●
Knowledge detail
www.DLR.de • Chart 5
Common Design
System-
Layout
configuration connection
en
viron
mental
imp
act
En
gin
e in
teg
ration
> Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
Aircraft redesign for short ranges
www.DLR.de • Chart 6 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1 Source: OAG Aviation - OAG Schedules Data, 2007
payload 190 [pax] 135 [kg]
all economy class with 30‘‘ seat pitch
range 1000 [NM] design range
TOFL 2000 [m] @sea level, MTOW, ISA +15°C
LFL 1500 [m] @sea level, MLW, ISA +15°C
cruise Mach
0.79
span 36 [m] maximum
altitude FL 350 FL 410
initial climb cruise
Nearly 80%: missions with sector length < 1000 [NM] 1
Selection of TLAR for the case study
5
con
v.
6
ou
tpu
t
2 in
itia
lisat
ion
3
anal
ysis
4
syn
th.
1
req
. def
.
syste
ms
pre
lim
inary
des
ign
airc
raft p
relim
ina
ry d
es
ign
source: boeing-727.com
high-lift
concept
final aircraft configuration
(CPACS)
minimum
aircraft
dataset
ParADISE
initialisation
System
boundaries
reference
high-lift
concepts
final systems architecture
(PrEMISE, CATIA)
www.DLR.de • Chart 7 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
systems architecture
(PrEMISE)
Top Level Aircraft Requirements (TLAR)
Leve
l 0
Leve
l 1
Leve
l 2
VAMPzero
initialisation
initial aircraft configuration
(CPACS)
Leve
l 0
Leve
l 1
Leve
l 2
Leve
l 3
mass converger feasibility & mass
evaluation
1
req
. def
.
2 in
itia
lisat
ion
3
anal
ysis
4
syn
th.
5
con
v.
6
ou
tpu
t
syste
ms
pre
lim
inary
des
ign
airc
raft p
relim
ina
ry d
es
ign
interface
VAMPzero
initialisation
Loadcase
determination
Aerodynamic polars
Aerodynamic force-
distributions
Engine performance
map
Mission simulation
VAMPzero synthesis
mass converger
high-lift
concept
final aircraft configuration
(CPACS)
minimum
aircraft
dataset
second. struct.
main wing
WINGmass
reitera
te
ParADISE
initialisation
System
boundaries
reference
high-lift
concepts
input files
(tool specific input format)
actuation
safety
kinematics
support structure
final systems architecture
(PrEMISE, CATIA)
ParADISE
synthesis
feasibility & mass
evaluation
reitera
te
www.DLR.de • Chart 8 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
2
3
1 systems architecture
(PrEMISE)
initial aircraft configuration
(CPACS)
Top Level Aircraft Requirements (TLAR)
Interface 1/3: Data Exchange Format
• Common Parametric Aircraft Configuration Scheme
(CPACS)
• XML based
• <tags>used to build hierarchic structure</tags>:
www.DLR.de • Chart 9 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1 2 3
header
vehicles
missions
airports
fleets
toolspecific
CPACS
aircraft
engine
profiles
struct.elem
materials
composites
vehicles
model 1
model 2
model N
aircraft
name
description
reference
fuselages
wings
engines
ldg. gear
systems
global
analyses
model 1 wings
Pair
wis
e in
tegr
atio
n a
pp
roac
h In
tegrated
data m
od
el app
roach
Interface 1/3: Data Exchange Format
• Common Parametric Aircraft Configuration Scheme (CPACS) and
Pragmatic Engineering Model for Integrated Systems Engineering
(PrEMISE)
www.DLR.de • Chart 10 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1 2 3
too
l ‚w
rap
pin
g‘
central sp
ecific inp
ut file gen
eration
Interface 1/3: Data Exchange Format
• Common Parametric Aircraft Configuration Scheme (CPACS) and
Pragmatic Engineering Model for Integrated Systems Engineering
(PrEMISE)
www.DLR.de • Chart 11 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
ParADISE
disciplinary tool
disciplinary calculation
convert to tool lang.
convert to PrEMISE
PrEMISE
wrapped disciplinary tool
CPACS
disciplinary calculation
extract
convert to tool lang.
write
convert to CPACS
write input
read output
1 2 3
Decentralised computation framework: RCE for CPACS
Interface 2/3: aircraft design results
www.DLR.de • Chart 12 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
Initiation Iterations until convergence
• For a more elaborate discussion on RCE and collaborative data management, please see:
D. Böhnke, Challenges for Collaborative Data Management in an MDAO Process (DLRK2012)
Tools remain on owners‘ servers.
Exchange of input and output in
CPACS format via the network.
1 2 3
Aircraft design
• wing dimensions
• types of moveables and target settings
• secondary wing component: - dimensions - loads - weights
Level 0 Level 1 Level 2
Interface 2/3: aircraft design
• Parametric interfaces between aircraft and systems predesign
www.DLR.de • Chart 13 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1 2 3
CPACS geometry
Interface 3/3: systems design
• Parametric interfaces between aircraft and systems predesign
www.DLR.de • Chart 14 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
1 2 3
Systems design
• high-lift concept feasibility
• high-lift support structure: - locations - dimensions
• system properties: - weight - costs - power budget
1
req
. def
.
2 in
itia
lisat
ion
3
anal
ysis
4
syn
th.
5
con
v.
6
ou
tpu
t
syste
ms
pre
lim
inary
des
ign
airc
raft p
relim
ina
ry d
es
ign
interface
VAMPzero
initialisation
Loadcase
determination
Aerodynamic polars
Aerodynamic force-
distributions
Engine performance
map
Mission simulation
VAMPzero synthesis
mass converger
high-lift
concept
final aircraft configuration
(CPACS)
minimum
aircraft
dataset
second. struct.
main wing
WINGmass
reitera
te
ParADISE
initialisation
System
boundaries
reference
high-lift
concepts
input files
(tool specific input format)
actuation
safety
kinematics
support structure
final systems architecture
(PrEMISE, CATIA)
ParADISE
synthesis
feasibility & mass
evaluation
reitera
te
www.DLR.de • Chart 15 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
2
3
1 systems architecture
(PrEMISE)
initial aircraft configuration
(CPACS)
Top Level Aircraft Requirements (TLAR)
Conclusion
www.DLR.de • Chart 16 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012
• System-of-systems approach in preliminary design
• Proper disciplinary interfacing techniques
• Integration frameworks
Large potential for increasing OAD knowledge
in predesign phases
• Challenges
• Technical: connecting disciplinary analysis tools
• Non-technical: establishing effective
communication
more research focus on the organisational
level of MDO
Collaborative Design in the Integrated Design Lab
www.DLR.de • Chart 17 > Application of a distributed MDAO framework > Erwin Moerland • DLRK2012 > 10th of September 2012