adaptive aerostructures for revolutionary civil supersonic
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1Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
Initiative
Dimitris C. Lagoudas, Texas A&M University
Adaptive Aerostructures for Revolutionary Civil
Supersonic Transportation Aeronautics and Space Engineering Board
September 25, 2019
2Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
Initiative
Leading/
trailing edge Tailored
forebody
Empennage
OML
Fuselage
Wing
OML
Engine inlet &
nacelle OML
Sense conditions between the aircraft and the ground (understand real-time
atmospheric conditions)
Make small, distributed OML geometry adjustments to reduce boom for all flight
conditions
Major ULI Objectives
3Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
Initiative
Coupling of
Three “Challenges”
4Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
InitiativeMulti-Disciplinary Expertise to Address the Challenge
Un
ive
rsit
ies
:
Tech
nic
al le
aders
hip
,
edu
catio
n &
tra
inin
g
Ind
us
tria
l P
art
ne
rs:
F
ou
ndation in
his
tory
&
realis
tic a
pplic
atio
ns
Un
ive
rsit
ies
In
du
str
ial P
art
ne
rs
C h a l l e n g e 3
Boeing Research and Technology
Utah St.
Florida Int’l*
Princeton Univ. of Houston*
U. North Texas*
Novel SMA
Materials
Actuators +
Structures
Aerodyn.
Effects
Shockwave +
Acoustics
S.S. Aircraft
Design
NASA-LangleyResearchCenter
NASA-GlennResearchCenter
NASA-ArmstrongF.R.C.
Ft. Wayne MetalsATA Engineering, Inc.
D. Hartl
(Co-PI)
D. Lagoudas
(PI)P. Cizmas
(Co-PI)
H. Reed
(Co-I)
R. Malak
(Co-I)
R. Bowersox
(Co-PI)
I. Karaman
(Co-I)
T. Baxevanis
(Co-I)
M. Young
(Co-I)
G. Dulikravich
(Co-I)
R. Miles
(Co-I)
D. Hunsaker
(Co-I)
J. Schaffer
(Co-I)
E. Blades
(Co-I)
J. Mabe
(Co-PI)
H. Shen
(Co-I)
C h a l l e n g e 1 Chal lenge 2
E. White
(Co-I)D. Lazzara (Co-I)
T. Magee (Co-I)
Student
Exchange/Placement
To Date
5Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
InitiativeOverview of the Project Timeline
Year 1 Year 2 Year 3 Year 4 Year 5
Challenge 1: Design Tools/Trade
Studies
Challenge 2: SMA Material
Development
Existing tools verified/validated
Integrated adaptive aerostructure
lab demo (TRL 3-4)
Cu
mu
lati
ve
Fu
nd
ing
(%
)0
10
0
Challenge 3: Design and
Demonstrate
Trade studies in full
computational framework
Customized SMA
actuators produced
Integrated adaptive aerostructure
W.T. demo (TRL 4-5)
Undergraduate Student Engagement
6Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
InitiativeOutcomes of NASA ULI at the End of Year 2
• The ULI funding enabled interactions among groups that usually do not closely interact, in this case, sensing, aerodynamics, design optimization and structural morphing. It was a challenge during Year 1 that took active intervention to make it happen and be functional during Year 2.
• It brought the university and industry communities together. This close collaboration is facilitating technology development, including development of a framework for low and high fidelity aerodynamic tools, rapid geometry optimization, identification of adverse boom conditions, improved boom propagation tools, and keeping the team on a path towards technology transition.
• While close industrial collaboration is effective, the academic institutions lead the effort. This is something that is unique to the ULI (by design). We were fortunate to get top talent from industry and they have been able to collaborate without taking over the effort.
• Student engagement has been extremely successful, especially undergraduate students, who perceive the ULI as a great opportunity to be involved with.
• Input from External Advisory Board has been important and very useful in revectoring scientific focus and improving collaborations.
7Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
InitiativeHow could ARMD Improve the ULI Initiative?
• The ULI program is about putting universities in-charge of technology development that can transition to industry use. This should continue.
• The ULI program should formalize industry participation and reflect this into the scoring of proposals.
• Industry needs to participate closely, but it has to take on a secondary role to the university’s leadership. This requires depth of engagement and collaboration between industry and universities that should be recognized and rewarded.
• The ULI program should formalize expected institutional commitment and support and reflect it into the scoring of proposals.
• The ULI should expect closer connections with NASA Centers, especially for student opportunities and integration of tools and focus on technology transitions for the outer years of the effort.
8Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation
University
Leadership
Initiative
How ULI Research Effort Along with the NASA-ARMD Strategic
Goals will Affect the Aviation Community as a Whole?
• Already we have increased the supersonic community’s understanding
of the adverse impact of vehicle geometry, flight configuration,
and atmospheric conditions on boom signatures.
• Improved understanding of the problem is the first step in finding
solutions that will allow a return to overland supersonic flight, a key
NASA goal.
• We are beginning to develop potential solutions and tools to ‘correct’
loud booms under adverse conditions.
• Students with the appropriate training will enter the workforce with tools
and ideas and they will in turn influence the aviation community.
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