Bryce A. Roth, Ph.D.
Aerospace Systems Design
Laboratory
School of Aerospace Engineering
Georgia Institute of
Technology
Last Updated 06Feb03
Title: Research Engineer
II
Status: Professional Research Staff,
ASDL
Office: Rm 322, Weber Bldg. |
Phone: (404)894-7779
Fax: (404)894-6596
e-mail: bryce.roth@ae.gatech.edu |
Primary
Responsibilities: |
· Contract management
of GEAE USA program at Georgia Tech
· Lead for
propulsion systems research at ASDL
·
Development and application of advanced vehicle design methods
· Research proposal preparation |
Principle Fields
of
Research: |
· Propulsion System Design and
Analysis
·
Engine/Airframe Integration
· Aircraft Design and Analysis
· Advanced Vehicle Design
Methods
·Work Potential Methods for
Vehicle Design
·Technology Evaluation
Methods
·Genetics Methods for Complex Systems
Design
·Hypersonic Vehicle Design
·Missile Systems Design |
Summary of Research Experience: Dr. Roth has been involved
with research in propulsion systems design and fixed-wing aircraft design since
1995. He has extensive knowledge of aerodynamics, aerothermodynamics, propulsion
system cycle design, installation corrections, mission analysis, vehicle design,
and vehicle sizing/synthesis. His doctoral topic was in advanced design methods
for vehicle analysis based on the concept of thermodynamic work potential
allowable within the bounds of the 2nd law of thermodynamics. As part
of this thesis research, Dr. Roth devised a new method to relate usage of
thermodynamic work potential during vehicle mission to vehicle fuel weight.
In addition to this research, Dr. Roth has been involved in a variety of
related research projects within the past several years. The most notable of
these projects include: propulsion system design for high-speed standoff
missiles, probabilistic design methods for commercial aircraft engines,
probabilistic approaches to engine/airframe matching, and advanced propulsion
system technology evaluation/selection methods. He has also worked closely with
General Electric Aircraft Engines since 1995 on a variety of research projects
pertaining to the above-mentioned research initiatives. Finally, Dr. Roth served
as the 1996 HSCT design team leader and was also responsible for HSCT propulsion
system design and simulation. Other responsibilities include management of NSF
and GEAE-related contract work, in addition to proposal preparation. Dr. Roth
was a NASA Multidisciplinary Analysis (MDA) Fellowship recipient during his
graduate studies.
In his current job as a Research Engineer, Dr. Roth is directing various
vehicle propulsion-related research projects. His primary responsibilities are
contract management for Georgia Tech’s University Strategic Alliance (USA) with
GE Aircraft Engines, management of a study on thermodynamic work potential for
the U.S. Army, management of a research grant on thermoacoustic propulsors for
NASA Glenn RC, and management of a National Science Foundation (NSF) grant on
design for affordabilityand environmental compatibility. Dr. Roth is also
responsible for the preparation of various research proposals and participates
in the development of new business contracts for the Aerospace Systems Design
Laboratory.
Education: B.S. Aerospace Engineering, Georgia Institute of
Technology, 1995; M.S. in Aerospace Engineering, Georgia Institute of
Technology, 1997; Ph.D. in Aerospace Engineering, Georgia Institute of
Technology, 2000.
Ph.D. Qualifying Areas: high temperature gas dynamics, structural
analysis, vehicle design
Professional Societies: American Institute of Aeronautics and
Astronautics, American Society of Mechanical Engineers, Society of Allied Weight
Engineers, Association of Old Crows
List of Published Articles, Books, Monographs, and Reports -
Roth
Doctoral Dissertation:
Journal Publications:
- Roth, B.A., Mavris, D.N., "A Method for Propulsion Technology Impact Via
Thernodynamic Work Potential," J. of Aircraft, Vol. 40, No. 1, Jan.
2003.
- Roth, B.A., "Aerodynamic Drag Loss Chargeability and Its Implications in
teh Vechicle Design Process,&rquot;J.of Aircraft, VOl. 40, No. 1,
Jan. 2003.
- Roth, B.A., "A Work Potential Perspective of Engine COmponent
Perfornamce,%quot;J. of Propulsion and Power,VOl. 18, No 6,PP1183-1190,
Nov-Dec 2002.
- Roth, B.A., Mavris, D.N., "A Comparison of Thermodynamic Loss Models
Suitable for Gas Turbine Propulsion," J. of Propulsion and Power,Vol.
17, No. 2, PP324-332, Mar-Apr 2001.
- Roth, B.A., Mavris, D.N., "Technology Evaluation via Loss Management
Models Formulated in Terms of Vehicle Weight," Weight Engineering, The
Journal of the Society of Allied Weight Engineers,Vol. 60, No. 1, PP 53-77
(see also SAWE3001), Fall 2000.
Pending Journal Publications:
- Roth, B.A., Mavris, D.N.,“Aerodynamic Drag Loss Chargeability and Its
Implications in the Vechicle Design Process,” Submitted to J. of Propulsion
and Power,Feb. 2002.
Conference Publications (reverse chronological order):
- Roth, B.A., Mavris, D.N., Macsotai, N.I., "Adaptive
Selection of Pareto-Optimal Engine Technology Solution Sets,"23rd COngress of
the International Aeronautical Sciences, Toronto, 8-13 Sept. 2002,
ICAS2002-5.9.4.
- Roth, B.A., Ender, T.,Mavris, D.N.,"Technology
Portfolio Assessments Using a Modified Genectic Algorithm Approach,"AIAA
Multidisciplinary Analysis Conference, Atlanta, 3-5 Sept. 2002,
AIAA2002-5434.
- Roth,
B.A., McDonald, R.M., Mavris, D.N.,"A Method for Thermodynamic Work Potential
Analysis of Aircraft Engines," Joint Propulsion Conference, Indianapolis, IN,
7-10 July 2002, AIAA2002-3768.
- Roth,
B.A., Graham, M., Mavris, D., "Adaptive Selection of Aircraft Engine
Technologies in the Presence of Risk,"ASME Turbo Expo, Amsterdam, 3-6 June
2002, GT-2002-30623.
- Riggins,
D., Wilson, C., Roth, B., McDonald, R.,"Performance Characterization of
Turboshaft Engines Via Availability and Second Law Analysis,"58th American
Helicopter Society Forum, Montreal, Canada, 4-6 June 2002.
- Roth,
B.A., Mavris, D.N., "A Stochastic Approach to Designing Affordable,
Environmentally Acceptable Programs," Presented at the 2002 NSF DMII Grantee's
Conference, San Juan, January 2002.
- Roth,
B.A., “Aerodynamic Drag Loss Chargeability and Its Implications in the Vehicle
Design Process,” Submitted to the 2001 Aviation Week/AIAA Technology &
Operations Conference, Los Angeles, Oct. 2001, AIAA2001-5236.
- Roth,
B.A., German, B.J., Mavris, D.N., "Commercial Engine Architecture Selection in
the Presence of Uncertainty and Evolving Requirements," submitted to the
14th ISABE, Bengalore, India, Sept. 2001.
- Roth,
B.A., D.N., "A Method for Comprehensive Evaluation of Propulsion System
Thermodynamic Performance and Loss," 2001 AIAA/ASME/SAE Joint Propulsion
Conference, Salt Lake City, UT, 8-11July, 2001, AIAA2001-3301.
- Roth,
B.A., "A Work Potential Perspective of Engine Component Performance," 2001
AIAA/ASME/SAE Joint Propulsion Conference, Salt Lake City, UT, 8-11July, 2001,
AIAA2001-3300.
- Roth,
B.A., German, B.J., Macsotai, N.I., Mavris, D.N., "Adaptive Selection of
Engine Technology Solution Sets from a Large Combinatorial Space," 2001
AIAA/ASME/SAE Joint Propulsion Conference, Salt Lake City, UT, 8-11July, 2001,
AIAA2001-3208.
- Roth,
B.A., Mavris, D.N., "Minimizing Vehicle Environmental and Economic Cost Via
Thermodynamic Work Potential," to be presented at the 2001 NSF DMII Grantees
Conference, Tampa, FL, Jan. 2001.
- Roth,
B.A., Mavris, D.N., "A Work Availability Perspective of Turbofan Engine
Performance," presented at the AIAA Aerospace Sciences Meeting, Reno, NV, Jan
2001.
- Roth,
B.A., Mavris, D.N., "Evaluation and Selection of Technology Concepts for a
Hypersonic High Speed Standoff Missile," presented at the AIAA Missile
Sciences Conference, Monterey, CA, Nov. 2000.
- Roth,
B.A., Mavris, D.N., "A Generalized Model for Vehicle Thermodynamic Loss
Management and Technology Concept Evaluation," presented at the World Aviation
Congress and Exposition, San Diego, CA, Oct. 2000.
- Roth,
B.A., Mavris, D.N., "A Method for Propulsion Technology Impact Evaluation Via
Thermodynamic Work Potential," Presented at the 8th
Multidisciplinary Analysis and Optimization Conference, Long Beach, CA, Sept.
2000.
- Roth,
B.A., Mavris, D.N., "A Comparison of Thermodynamic Loss Models Suitable for
Gas Turbine Propulsion: Theory and Taxonomy," Presented at the 36th
Joint Propulsion Conference and Exhibit, Huntsville, AL, July 2000.
- Roth,
B.A., Mavris, D.N., "A Comparison of Thermodynamic Loss Models Applied to the
J-79 Turbojet Engine," Presented at the 36th Joint Propulsion
Conference and Exhibit, Huntsville, AL, July 2000.
- Roth,
B.A., Mavris, D.N., "Technology Evaluation via Loss Management Models
Formulated in Terms of Vehicle Weight," Presented at the 59th
International Conference of the Society of Allied Weight Engineers, St. Louis,
June, 2000. SAWE paper number 3001.
- Roth,
B., Mavris, D., "Formulation of Available Energy-Based Methods to Assess
System Affordability," Presented at the 2000 NSF Grantees Conference,
Vancouver, Jan. 2000.
- Mavris,
D.N., Roth, B.A., and Macsotai, N.I., "A Method for Probabilistic Sensitivity
Analysis of Commercial Aircraft Engines," Presented at the 14th ISABE,
Florence, Italy, Sept. 1999.
- Roth,
B., and Mavris, D., "Analysis of Advanced Technology Impact on HSCT Engine
Cycle Performance," Presented at the 35th Joint Propulsion Conference, Los
Angeles, June 1999, AIAA 99-2379.
- Roth,
B., Mavris, D., "A Stochastic Approach to Designing Affordable,
Environmentally Acceptable Systems," Presented at the 1999 NSF Grantees
Conference, Long Beach, CA, Jan. 1999.
- Mavris,
D.N., Macsotai, N.I., Roth, B.A., "A Probabilistic Design Methodology for
Commercial Aircraft Engine Cycle Selection," 1998 World Aviation Congress and
Exposition, Anaheim, CA, September 28-30, 1998. SAE-985510.
- Roth,
B., Mavris, D., and Elliott, D., "A Probabilistic Approach to UCAV Engine
Sizing," 34th Joint Propulsion Conference, July 13-15, 1998, Cleveland, OH,
AIAA98-3264.
- Mavris,
D.N., Roth, B., "A Methodology for Robust Design of Impingement cooled HSCT
Combustion Liners," 35th Annual Aerospace Sciences Meeting and Exhibit, Reno,
NV, January 6-9, 1997. AIAA-97-0288.
Pending Conference Publications:
- Roth, B.A., "The Role of Thermodynamic Work Potential in Aerospace Vehicle
Design," Cleveland, 16th ISABE, Sept. 2003.
- Roth, B.A., Mavris, D., Doel, D., "High Accuracy Matching of Engine
Performance Models to Test Data,"CLeveland, 16th ISABE, Sept. 2003.
- Roth, B.A., Patel, C., "Application of Genetic Algorithms in the Engine
Technology Selection Process,"Atlanta, ASME Turbo Expo, June 2003,
GT-2003-38432.
- Roth, B.A., Mavris, D., Doel, D., Beeson, D., "High Accuracy Matching of
Engine Performance Models to Test Data,"Atlanta, ASME Turbo Expo, June 2003,
GT-2003-38784.
Other Published Works:
- Roth, B.A.," A Day in the Life of a Warbird," Article in Autopilot
Magazine, July 2002, PP. 19.
- Roth, B.A., McDonald, R., Mavris, D., Working Tables and Charts for
Estimation of Thermodynamic Work Potential in Equilibrium Mixtures of Jet-A
and Air, Final Report for NASA Contract NAG3-2586, June 2002.
- Roth et al, "DKM119 Fast Attack, Air Launched Air to Ground Missile,"
Proposal for the 1999 AIAA Graduate Missile Design Competition, Georgia
Institute of Technology, Atlanta, GA, June 1999.
- Tai, J., Roth, B., Mavris, D., Schrage, D., NASA HSR Phase IIA Metrics
Study, Final Report, NASA Glenn Research Center, March, 1999.
- Mavris, D.N., Macsotai, N.I., Roth, B.A., "Probability Methods in Engine
Design," Article in Aerospace Engineering Magazine, Vol. 19, No. 6,
June 1998, PP30-33.
- Roth et al, HSCT Design Team Final Report, Georgia Institute of
Technology, Atlanta, GA, December 1996.
- Roth et al, "An HSCT High Performance Low Bypass Mixed Flow Turbofan,"
Design Proposal for the 1995 AIAA Undergraduate Engine Design Competition,
Georgia Institute of Technology, Atlanta, GA, June 1995.
- Roth, Pulsed Air Jet Flow Definition, Georgia Tech Report GIT
AER-EAG-94-8, February 1995.
Unpublished and/or Proprietary Works:
- Roth et al., "Engine Technology Identification, Evaluation, and Selection
(TIES) Toolbox Version 2.1: Theoretical Manual, User’s Manual, and Code
Listing," Software Documentation Prepared for GE Aircraft Engines, Oct. 2002.
- Roth et al, “Engine Technology Identification, Evaluation, and Selection
(TIES) Version 1.1 Toolbox: Theoretical Manual, User's Manual, and Code
Listing” Software Documentation prepared for GE Aircraft Engines, Nov. 2001.
- Roth, B.A., "Sonic Cruiser Propulsion System Analysis, ": Consultancy,
Sept. 2001.
- Roth, B.A., Macsotai, N.I., Mavris, D.N., Scaled GE90 Robust Engine
Study, Final Report to General Electric Aircraft Engines, Georgia
Institute of Technology, Atlanta, GA, Jan. 1998.
Contributions to Other Projects/Proposals:
- "An Integrated System Approach to Revolutionary Aeropropulsion and Power
Technologies," a URETI proposal submitted to NASA Glenn RC, Dec 2001.
- "A White Paper on a NASA Aeropropulsion and Power Institute for
Multidisciplinary Science, Technology, Engineering, and Integration," a URETI
white paper submitted to NASA Glenn RC, June 2001.
- "Probabilistic Core Sizing and Cycle Selection for Commercial Aircraft
Engines," proposal to NASA Glenn RC, May 2001.
- "Revolutionary/Unconventional Aeropropulsion Technology Evaluation through
Thermodynamic Work Potential," proposal to NASA GlennRC, January 2001.
- "An Investigation of Applications for Thermodynamic Work Potential to
Turboshaft Engine Technology Evaluation," study for US Army Aviation &
Missile Command, Redstone Arsenal, December 2000.
- "Research of Advanced Probabilistic Methods for Propulsion System Design,"
Proposal to NASA Glenn Research Center, June, 1999.
- "University Strategic Alliance in Probabilistic and Robust Propulsion
Systems Design," Proposal to General Electric Aircraft Engines, June, 1999.
- "Evolutionary and Revolutionary Methods for the Design of Affordable,
Environmentally Friendly Transportation Systems," Proposal to the Packard
Foundation, March 1999.
- Notional UCAV Technology Impact Forecasting Study for AFRL, May, 1998.
- "Decision-Based Design Methodology for Affordability," Proposal to the
General Electric Corporation, Mar, 1998.
- FLOPS/ACSYNT Comparative Study for NASA Langley Research Center, Mar.
1998.
- "An Integrated Product and Process Development Approach to Environmentally
Conscious Design," Proposal to the National Science Foundation, October, 1996.