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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


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


University

Leadership

Initiative

Coupling of

Three “Challenges”


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


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


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.


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.


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.