learn from a „great€¦ · product life - total life time of developing product (or...
TRANSCRIPT
„ Catch a man a fish, and you can sell it to him.
Teach a man to fish, and you ruin a wonderful
business opportunity.”
Marx
(on opportunity)
Learn from a „great” scientist….
Who is the good engineer?
Characterization of the engineer from „Black Diamond” wrote
by famous Hungarian writer Mor Jokai and published in 1870 he was engineer
he has conducted foreign studies, which is
strongly supported by the EU nowadays,
he trained himself continuously, life long
education
he was aware of the latest achievements of
science and technology
he spoke several languages
he had oversight on questions of (mine)law
he had shares, owned money on stoke market, he had high level of
economical knowledge
he was an excellent team worker and even team leader
creative, innovative, full of ideas
he was able to make decisions by himself, a man to fit challenges and
changing expectations
Modell of professional succes
Main components of the effective competence development
and deployment
(„V” model)
Personal
behaviour
Basic
knowledge
Profes-
sional
knowledge
Tacit
knowledge
(practice)
Fortune
Doctoral
Schools and
supervisors
Prof.-Dr. József Rohács Department of Aeronautics, Naval Architect and Railway Vehicles
Budapest University of Technology and Economics
Introduction
1. New sciences
2. Aeronautical sciences
3. Development processes
4. New technologies
5. Summary
Vehicle, Transportation and Logistics Systems
Introduction
Nowadays the aeronautical engineer must have
good personal behavioiurs (culture, talent, moral good mental
condition) and
must have competeneces in basic sciences (matematics, physics, thermodynamics, materials
science, control theory, etc,)
profesional sciences (aerodynamics, flight mechanics, flight dynamics
and control, theory of propulsion, airframe , … design.., operation,
etc.)
new sciences (innovation theory, technology policy, logistics, systems
engineering, lean production, etc.) and
new special knowledge (legacy, environmental protection, lunguages,
etc.)
This lecture gives basic information on aircraft development
philosophy, required knowledge and competences.
1. New Sciences 1.1. Innovation theory
innovation is introducing any idea
(object, product, service) into market
by an individual or other unit of adoption
for public goods
5. Generation innovation process
Innovation diffusion
0
20
40
60
80
100
inno
vato
rs
early
ado
pter
s
early
maj
ority
late
maj
ority
lagg
ards
1. New Sciences 1.1. Innovation theory – connt’d.
Technology is a specific set of industrial methods and systems of
production including both physical equipment and related
organizational rules,
knowledge, which is
applied systematically
in order to combine
inputs and transform
them into output.
1. New Sciences 1.2. Technology
Technology life - is that time during which the given technology has
considerable advantages comparing to other (analogical) technologies.
Technology life cycle - is a commercial gain of a technology (or product)
through the expense of research and development phase, and the financial
return during its "vital life" (its successful deployment).
Product life - total life time of developing product (or service)including the
research, development, engineering, production, operation (usage, service,
maintenance, repair) and recycling.
Foresight - is a knowledge (or sound judgment) into a future event that may
or not may occur.(This is an act of looking forward.)
Forecast - is a prediction of the future on basis of estimation.
Scenario - is a synoptical collage of an event or series of actions and event.
Roadmap - it is a plan or guide for future actions that matches the given
terms of goals with technology solutions to help meet those goals.
Technology brokering - is the creation of the breakthrough innovations in
markets in fields of otherwise disconnected industries
1. New Sciences 1.2. Technology – cont’d.
Thinking out of the box - original, radigally new technologies
The new technologies:
(sustainable) innovative
disruptive
subversive
Idő
Innovative
Disruptive
Tec
hnolo
gy l
evel
1. New Sciences 1.3. Technology and product development
1. New Sciences 1.3. Technology and product development – cont’d.
• Pearl Harbor Systems engineering • short time for reproduscing the navy
• development of the logistics and systems engineering
• results
• military standard MIL 499 System Engineering, 1959
• MIL-STD-499A: Engineering Management, 1974
• succesful application: Apolló Program
• important
• it is a tool of management
• basises
• logic series of actions
and decisions
• interdisciplinary
approach
• life-cycle ballance system solution
1. New Sciences 1.4. Systems engineering
To
tal
cost
of
the
pro
ject
Costs of phases A and B
minimum maximum
Project cycles: A0 – advanced studies
A – preliminary analysis
B – definitions – preliminary plans
C - design
D – development (engineering)
E - operation
1. New Sciences 1.4. Systems engineering – cont’d.
1. New Sciences 1.4. Systems engineering – cont’d.
Logistics management tries to have the
• “right product”, in the
• “right quantity”, at the
• “right place”, at the
• “right time”,
• with the “right cost”
Logistics management must balance 2 basic targets:
• Quality of Service
• Low Cost
1. New Sciences 1.5. Logistics
Value-added management
1. New Sciences 1.5. Logistics – cont’d.
Craft production
- decentrailezed
- masters (of craft)
- costumized
- specialized
Mass production
- vertical hierarchy
- scientific management
- assembly line
- interchangeable parts,
- production line
Knowledge-based
production
- network alliances
- team - based works
- single IT
- flexibility
1. New Sciences 1.6. Lean technology
Nightingale - Lean Supply Chain Management Principles and Practices 2005 © 2005 Massachusetts Institute of Technology
http://ocw.mit.edu/courses/aeronautics-and-astronautics/16-852j-integrating-the-lean-enterprise-fall-2005/lecture-notes/7_lean_sup_ch_mg.pdf
Supplier integration in aerospace industry: Architectural or structural integration (how the components are linked in product)
System integration
Knowledge integration
Production flexibility
1. New Sciences 1.6. Lean technology - cont’d.
2. Aeronautical sciences 2.1. Aerodynamics – basic forces
lift – is a component of aerodynamic force
it is perpendicular to flow (aircraft) velocity
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
L - lift
R –
aerodynamic
force
D- drag
There are some examples only.
2. Aeronautical sciences 2.1. Aerodynamics – lift generation
Lift generates due to leading edge bauble
(closed airfield) and Kutta condition.
full flow separation at
high angle of attack
2. Aeronautical sciences 2.1. Aerodynamics – lift coefficient
Application of dimensional analysis to lift calculation:
general relationship
possible function
dimensional equality
simple calculations
lift dependence
simple transformations dynamic pressure: wing area:
final result
where is the non-dimensional lift coefficient.
)( VlfL
zyx lVcL
zyx
ms
m
m
kg
s
kg
32
m
. - 2- :secfor and
, -31 :mfor equation
, 1 :kg toaccordancewith
y
zyx
x
22lVcL
2
2Vq
2lS
SV
cSVcS
VcL22
2
2
2 2
L
22
cc
2L
qScL L
2. Aeronautical sciences 2.1. Aerodynamics - stall
a
LCstall
critical angle of attack
2. Aeronautical sciences 2.1. Aerodynamics - drag
drag
parasite drag induced drag
pressure drag
skin-friction drag
flow separation drag
wave drag
interference drag
3D drag
aircraft components’ drag
only) case, 2D (in
drag profileascalled
flow 3D in
case 2Dfor
wingrock
www.nas.nasa.govAbout
Profile Imagesharrier.jpg
It is connected with
lift generation
2. Aeronautical sciences 2.1. Aerodynamics - skin friction drag
generated in flow by frictions between the flow elements
(see boundary layer theory, lecture aer6)
Remember: flow velocity on the surface equals to zero.
2. Aeronautical sciences 2.1. Aerodynamics – wave drag
drag generated at high and supersonic speed
Shock waves generated at high
speed
Drag determined by flow separation
after shock wave
theoretical
curve
M = 1
sound wall
it begins with effect of
flow compressibility
2. Aeronautical sciences 2.1. Aerodynamics – sonic boom
Sonic boom is generated
at supersonic flight
httpwww.nonoise.orglibraryanimals11.gif
.cos
,sin
Vdt
d
g
WWL
dt
dV
g
WWDT
Dynamic, theoretical
and service ceilling
2. Aeronautical sciences 2.2. Fligtht mechanics - climb
D
L
c
ck
k
WT
T thrust
L lift
W - weight
D drag
-
-
-
,
2
2
,,
2
2
SV
c
SV
c
W
D
L
WT
LWDT
D
L
rT
aTT
V
321 HHH
4
3
2
1
H
H
H
H
2. Aeronautical sciences 2.2. Fligtht mechanics - cruise mode of flihgt
2. Aeronautical sciences 2.2. Fligtht mechanics - flight envelope
2. Aeronautical sciences 2.2. Fligtht mechanics - load envelope
Really Invisible Aircraft
1. Size effects – cont’d.
As Concorde teaches
the supersonic airplane can be
used effectively if it would have
300 seats as minimum,
radically reduced sonic boom.
Hypersonic aircraft
only in small versions are tested
large airplanes only on paper,
critical challenge:
aerodynamic heating
https://www.youtube.com/watch?
v=pCdCwj2homg
2. Aeronautical sciences 2.2. Fligtht mechanics - hypesonic flights
Scramjet – propulsion airframe integration
2. Aeronautical sciences 2.3. Theory of propulsion systems
2. Aeronautical sciences 2.4. Airframe
Structural solution
Load tests
Airbus A350
Boeing 787
See http://www.popularmechanics.com/flight/g2428/7-airplane-wing-stress-tests/
2. Aeronautical sciences 2.4. Airframe
new ideas, principles
theoretical investigation
evaluation of results
decisions
plan of labor-
atory studies
product
specification
design,
engineering
investigation
with prototype
model and
laboratory inv.
evaluation
of results decisions
production
preliminary
research
product
development
3. Development process
3.1. Development chain
plan for
experiences
flight
experiences
evaluation
of results decisions
3. Development process
3.2. Structured Development
Airbus R&D
philosophy
3. Development process
3.3. Goodness factor
goodness factor
time
goodness factors
time
functional (technical)
goodness factors
economic goodness
factors
goodness factor
time
earlier
development
later development
goodness factor
time
„fellow”
development
Design Philosophy – an Important Part of Aircraft Design Courses J. Rohacs, B. Gati
idő
jósági
fok
lassú fejlesztés
gyors fejlesztés0 %
15 %
30 %
45 %
piaci részesedés
goodness
factor
market share
quick development
slow development
time
3. Development process
3.3. Goodness factor – cont’d.
goodness factor
time
selling
modernisation
3. Development process
3.3. Goodness factor – cont’d.
4. New Technologies
4.1. Technological Underpinnings
• development of informatics
– Moore’s Law on microprocessor cost/performance
– Gilder’s Law on bandwidth performance
– Metcalf’s Law on network performance
• unwritten rules – law of abundance
– unwritten rule of gridlock
• evolution – Kurzweil’s Law of
Accelerating Returns
– Golden Rule of the information age
1970 1975 1980 1985 1990 1995 2000
Pentium4 Processor
PentiumⅢ Processor
PentiumⅡ Processor
Pentium Processor
486DX Processor
386 Processor
286
8086
8080 8008
4004 1000
10,000
100,000
1,000,000
10,000,000
100,000,000
transistors
time
Demonstration of Moor’s law
B. J. Holmes: Transformation in Transportation Systems of the 21st Century, Invited lecture on the ICAS Congress, 2004, Yokohama
4. New Technologies 4.2. Characteristics of Transformation
• Integrated Radar, Flight Plan and Digital Video Data Fusion for SMGCS – INTERVUSE (A-SMGS – Advanced SMGS – ICAO )
• Surface Movement
Guidance and Control
System (SMGCS)
• virtual reality
4. New Technologies 4.3. Characteristics of Transformation – cont’d.
Flow control by MEMS at UCLA
4. New Technologies 4.4. MEMS Technology – Nano Technology
size effects ratio between surface and body forces ( at < 1mm dimensions)
ratio between the device and length scale
force effects surface forces
Van der Waals forces
polarity: Keesom
inductivity: Debey
electron correlation: London
electrostatic forces (at <0.1 m)
steric forces (in case of long molecules)
4. New Technologies 4.4. New Science: Micro Fluid Mechanics
4. New Technologies 4.5. Morphing
NASA and Lockheed Martin concepts
4. New Technologies 4.6. New materials
4. New Technologies 4.7. Out of the Box Solutions
innovative – sustainable technologies
radiclly new, disruptive solutions
thinking out of the box
4. New Technologies 4.9. Radically new solutions
GABRIEL (Integrated Ground and on-Board system for
Support of the Aircraft Safe Take-off and Landing) is an EU
supported L1 level project. (12 partners from 6 countries).
Its solution – MagLev track and
cart – sledge system
Summary
knowledge in development philosophy is important
esspecially for countries with small and limited
aeronautical industry
we had ointegrated this philosophy into the BSc and
MSc programs on aeronautical sciences, namely
aircraft,
air transport and
ATM specialisation
Summary
Thinking out of the box Think unconventionally