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Aerospace%20Education%20

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Aerospace Education & Research in the Area of Design Diamond Jubilee Lectures 2003-04 Department of Aerospace Engineering Indian Institute of Science, Bangalore – PowerPoint PPT presentation

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Title: Aerospace%20Education%20


1
Aerospace Education Research in the Area of
Design Diamond Jubilee Lectures
2003-04Department of Aerospace
EngineeringIndian Institute of Science, Bangalore
  • K. Sudhakar
  • Centre for Aerospace Systems Design Engineering
  • Indian Institute of Technology
  • Mumbai 400 076
  • October 30, 2003

2
Year 1997
  • Technology Perspective The Next Decade
  • Aeronautics Research Development Board
  • ARDB/TC/001, May 1997
  • Suggested centres of excellence to be
  • supported by ARDB are
  • CFD
  • Advanced Composites
  • Systems Design Engineering ? ?

3
Years 1990 -1997
  • Aerospace Design as a discipline at IITB
  • Specialization dropped
  • Courses had tapered off
  • Design, Build Or Open ended problems shunned
  • No research interest among faculty

?
  • March 1998 ARDB Sanction arrives

4
CASDE July 1998
  • Mission 
  • CASDE shall strive to develop and retain strong
    links with
  • Indian Aerospace Industry and shall engage in
    RD activities with worldwide visibility

http//www.casde.iitb.ac.in/
5
Objectives of CASDE
  • M. Tech Programme in Systems Design Engineering
  • Modeling Simulation Laboratory
  • System Design Methodologies
  • Awareness Creation

6
M. Tech in Systems Design Engineering
  • What do others teach?
  • What can draw / retain student interest?
  • What will faculty want to teach?
  • What will industry want?
  • What all should be taught?
  • Form a composite team
  • Brain-storming session

http//www.casde.iitb.ac.in/History/PastEvents/lon
avla/odw-see.pdf
7
M. Tech in Systems Design Engineering
  • Courses of study
  • System Modeling Simulation
  • Optimization for Engineering Design
  • Systems Engineering Principles
  • Statistical Methods for Analysis Design
  • Multi-disciplinary Design Optimization (MDO)
  • Applied Mechatronics (hands on course)  
  • System Level Studies RC Model Aircraft
  • Also available as short courses
  • Coordinates a Special Interest Group on MDO
    (SIG-MDO)

http//www.casde.iitb.ac.in/edu/batch_2003/curricu
lum.htm
8
Laboratory and Other Infrastructure
  • Wind tunnel balance
  • Propulsion system test facilities
  • IMS Laboratory ? http//www.casde.iitb.ac.in/IM
    SL/
  • COTS sensors, actuators, . . . .
  • R/C Model construction facilities, training
  • Data acquisition cards
  • Software

9
IMS Laboratory
http//www.casde.iitb.ac.in/IMSL/resources.html
10
Launch Vehicle Simulator from VSSC
http//www.casde.iitb.ac.in/IMSL/vssc.html
11
Applied Mechatronics
  • Hands on course
  • 2 hrs lecture 3 hrs lab per week
  • 2 projects

http//www.casde.iitb.ac.in/Mechatronics/
12
Student Projects
Appreciated
http//www.casde.iitb.ac.in/IMSL/student-projects.
html
13
ME Dual Degree Project HILS
  • Flight Dynamics sensor models
  • RTLinux Comedi
  • Real time simulation
  • Choose WP NGC
  • On-board Computer?
  • Use hobby grade actuators
  • Out of window display

http//www.casde.iitb.ac.in/Publications/pdfdoc/vi
shisht-DDP-2003.pdf
14
Flapping Wing Flight
  • Dual-Degree Project in Aero Flapping wing
  • Unsteady aerodynamics for prescribed motion
  • Aero elastic analysis for prescribed actuation
  • Wing construction - Polyurethane foam. (IDC)
  • Actuation mechanism for testing. (Robotics)
  • B. Tech Project in Robotics
  • (Robotics group)
  • Mechanism design
  • Kinematics prescribed
  • Loads prescribed

15
Awareness Creation - 2003
  • January - CEP in Applied Mechatronics
  • February - 3rd Meeting of SIG-MDO
  • April - Workshop on MDO _at_DRDL
  • August - Brainstorming on System Analysis
  • September - Int. Conf. MSO-DMES

16
We also!
  • Traveling Course on Design, Build and Fly.
    (CASDEADA) Student Projects as Case Studies.
  • http//www.casde.iitb.ac.in/IMSL/des-bld-fly.ht
    ml
  • Naval Institute of Aeronautical Technology,
    Cochin.
  • Dept. of Aerospace Engineering, MIT, Chennai
  • Dept. of Aerospace Engineering, Parks College of
    Eng.,Coimbatore
  • AeSI Wright Flyer Design Competition. (CASDEADA)
  • http//www.casde.iitb.ac.in/we-also/des-comp/

17
We also!
  • AeSI Schools Outreach Programme. (CASDEADA)
  • 30 events, 103 Schools, 5,600 students
  • (Good part of events by CASDE)
  • http//www.casde.iitb.ac.in/we-also/school-out
    reach/

18
http//www.casde.iitb.ac.in/MDO/
19
Systems Engineering Process
Context
Super System
Requirements to lower level
System
Solution from lower level
Sub System
  • Level 1 Good understanding of system
    knowledge base, heuristic
  • Computationally less
    expensive
  • Usually not available for
    new systems.
  • Level 3 Physics based modeling
    computationally intensive,
  • applicable to new systems
    (VV?)

20
CASDE Activities
  • Research activity
  • High fidelity models in design loop ( CFD, . .)
  • Multi-Disciplinary Analysis (MDA) leading to
  • Multi-disciplinary Design Optimization (MDO)

21
Challenges!
  • Human / Admin
  • People coming together (Design, A/D, Str, Prop,
    Controls)
  • Synchronizing funds (taken care of by ARDB)
  • Technical
  • Non-availability of disciplinary codes
  • Neither here nor there!

22
MDO Elements
  • Architectures
  • Sensitivity Analysis
  • Surrogate Modeling
  • Variable Complexity

23
MDO Elements
  • Architectures
  • Sensitivity Analysis
  • Surrogate Modeling
  • Variable Complexity

24
MDO Elements
  • Architectures
  • Sensitivity Analysis
  • Surrogate Modeling
  • Variable Complexity

25
User Supplied Gradients
26
User Symbolic Maths
27
Automatic Extraction of Formulae
28
Gradients by ADIFOR
29
ADIFOR Ver 2.0
  • First applied to VLM
  • Recently to 3-D Euler
  • Multiblock, Structured grid
  • Central difference, FVM
  • JST scheme of artificial dissipation.
  • Multistage Runge-Kutta schemes.
  • Implicit residual smoothing and local time
    stepping

Original Code ADIFORed Code
No of lines 4,090 11,889
Exec. time (min) 6.58 28.25
30
ADIFOR Ver 2.0
  • 3D Euler
  • ONERA M6 Wing

? Error in Finite Difference Estimate of d(L/D)/d? Error in Finite Difference Estimate of d(L/D)/d? Error in Finite Difference Estimate of d(L/D)/d? Error in Finite Difference Estimate of d(L/D)/d?
? ??0.2 ??0.02 ??0.002 ??0.0002
3.06 38.10 4.44 7.08 77.25
4.11 2.46 1.73 1.56 15.09
31
MDO Elements
  • Architectures
  • Sensitivity Analysis
  • Surrogate Modeling
  • Variable Complexity

32
MDO Elements
  • Architectures
  • Sensitivity Analysis
  • Surrogate Modeling
  • Variable Complexity

33
Design / MDO Studies
  • WingOpt
  • 3D Duct
  • Hypersonic Vehicle
  • Design under uncertainty

34
MDO of Transport Aircraft Wing
35
3-D Duct Design
36
3D-Duct Design Using High Fidelity Analysis
  • Low Fidelity Design Criteria
  • Wall angle lt 6
  • Diffusion angle lt 3
  • 6 REQ lt ROC
  • Fluent for CFD
  • RSM / DOE
  • DACE

37
Parameterization of HSTDV Body
Design variables XD ?1, ?2, ?3 , ?n_plan , ?wc
, wfac_pl, tfac_pl,, Hcruise
38
Hypersonic Vehicle Discipline
Interactions
Analysis Model
Output
Input variable
Ext. Compression Model AM1
?1
Y1 l1, l2, l3, h1, h2, h3 Y2 ma , MI, ?, pst
Y1
?2
Ext. Configuration Model AM2
Y3 (X,Y,Z) Y4 TOGW , C.G., Vol, Fuel mass
?3
Aero Model AM3
Y5 CN, Cm, CA
?n_pl
Trim Model AM4
Y6 TOGW_up, ?T , ?T , D
?w_c
SW
Thrust Model AM5
Y7 Th_deliv, Lp, Mp
ST
Hcr
Performance Model AM6
Y8 Cruise Range
?n_pl, SW ?1, Hcr
Variables not shared
Y1 Response from AM1 required as
input in AM2
Shared variables
39
MDO-Framework
40
http//www.casde.iitb.ac.in/MDO/
41
Publications
2000 2001 2002 2003
Journal 0 1 32 11
International Conferences 0 1 6 5
Core faculty 4
42
Thank You
43
Analysis for Design
44
MDO-Architectures
45
MDO-Architectures
Analysis ?
Y12
? Evaluator
46
MDO-Architectures
z, y12, y21
47
3D-Duct Design Using High Fidelity Analysis
  • Low Fidelity Design Criteria
  • Wall angle lt 6
  • Diffusion angle lt 3
  • 6 REQ lt ROC
  • Fluent for CFD
  • RSM / DOE
  • DACE

48
3D-Duct Design Using High Fidelity Analysis
  • Low Fidelity Design Criteria
  • Wall angle lt 6
  • Diffusion angle lt 3
  • 6 REQ lt ROC
  • Fluent for CFD
  • RSM / DOE
  • DACE

http//www.casde.iitb.ac.in/MDO/3d-duct/
49
MDA - System Analysis
50
Design Analysis of Computer Experiments
  • Regression fit Stochastic process
  • Single global fit
  • Variability in prediction known and exploitable

51
Building Models Using DACE
5 predictive error
Use multi-modal GA to identify n highest
peaks. Test if they are higher than 5 Add
computer experiments at those spots
52
Design - Publications
  • Journal of Aircraft
  • Volume 40 Number 4
  • July 2003
  • Total number of papers - 22
  • Number of papers addressing design - 4
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