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 Expert  723172

Expert in Combustion, Combustor Design, Combustor Acoustical Problems, Analysis, CFD, Engineering Design

Available for your Consulting and Expert Witness Needs

North Carolina (NC)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert designed and tested missles and spacecraft in many Hypersonic wind tunnels at elevated temperatures and pressures from Mach 3 simulation to Mach 8 simulation at NASA. The expertise included test procedures for starting such facilities and techniques to avoid damage to the test article. Spacecraft such as parts of the Space Shuttle were tested ; vehicles such as RV's were tested; and components such as tiles for the Space Shuttle were tested. Wind tunnels were designed for testing scramjets and other aerospace engines. The designs included the combustion chamber or plenum, the nozzle, the test chamber, and the diffuser. Some of the facilities are still in use today and are some of the largest wind tunnels in the world for Hypersonic testing and evaluation of missles and spacecraft and airbreathing engines.

aeronautics test-facility

Expert designed or improved combustion chambers for high temperature test facilities. These ranged from pressures of one atmosphere to 4000 psia, and temperatures from 1100 R to 5500R. The combustors were from 3 inches in diameter to over 3 feet in diameter. The problems solved were survival; heat transfer, stability, acoustics, ignition, and safety. Expert has 5 Patents in these areas. Some of the designs were unique and new such as the stabilized lifted flame and the combustor within a combustor. He designed a combustion chamber development facility that was used to test new designs and concepts. Two of the new designs were the stabilized lifted flame for methane and hydrogen, and the combustor within a combustor for good thermal profiles and broad coverage from 1100 R to 5500 R with one combustor.

combustion engine


combustion engineering

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Raleigh, North Carolina;  Fayetteville, North Carolina;  Cary, North Carolina;  Wilmington, North Carolina;  Jacksonville, North Carolina;  Greenville, North Carolina;  and Rocky Mount, North Carolina.

Year   Degree   Subject   Institution   Honors
1963   BS   Aerospace Engineering, Engineering Mechanics   Virginia Polytechnic Institute  
1982   BS   Civil Engineering   Old Dominion University (ODU)   Magna Cum Laude
1985   MS   Mechanical Engineering   ODU  
1961   MS   Mechanical Engineering   Notre Dame  
1981   PhD   Mechanical Engineering   Notre Dame  

Work History:
Years   Employer   Department   Title   Responsibilities

1963 to 2004


NASA Langley


Hypersonic Airbreathing Propulsion


Senior Combustion Engineer


He is responsible for : Originate, plan, and report the results of research required to demonstrate the Feasibility of high-energy facility designs. Provide new and unique designs and Solutions to operational problems. Provide new and unique concepts for Hypersonic vehicles both air breathing and rocket powered or combinations. Design and develop facilities to test such hypersonic vehicles

1983 to




Engineering Design




He is a senior engineer providing engineering expertise and project management services required for the development of specialized research systems. His engineering expertise is in the design and analysis of structural and mechanical systems, the use of numerous design codes, developing new criteria for specialized systems, using and mentoring others in the use of design and analysis software, and developing unique closed form solutions to problems. He is a project manager, leading a multi-disciplined team of engineers, technicians, administration personnel, and contractors through all aspects of a project including: defining requirements and project scope, cost estimating, schedule development and control, conceptual design through final design, analysis, drawings, documentation, specifications, procurement methods, construction management, testing, project close-out, and reporting at various reviews and status meetings. Supervision is limited to defining the broad objective, negotiating for personnel to work on the project, and status meetings.

1989 to 2003






Project Engineer


He is consulting and solving problems analytically supported by CFD codes on • Subsonic combustors, rocket, and scramjet design. • Heat flux levels in combustors and ramjets-scramjets. Cooling of the combustors for these devices

Career Accomplishments:

He is a member of AIAA and has received numerous awards and honors including the NASA Exceptional Achievement Medal. He is in Who's Who in Engineering and Science from 1991-2004




NASA Exceptional Achievement

Publications and Patents Summary

He has 25 publications, 5 Patents, and over 50 presentations .

Selected Publications and Publishers  
 - National Aeronautics and Space Administration (NASA)  
 - NASA and STA  

Government Experience:
Years   Agency   Role   Description
1963 to 2004   NASA   Lead Engineer   He was responsible for the testing of RV,s and other missiles from 1963 to 1988. He was responsible for the design of wind tunnels to test the Space Shuttle and TPS. He was responsible for wind tunnel design and use for Hypersonic vehicles and Scramjets such as the X-43. He was chief designer of alrge combustion chambers.
1998 to 1998   US Navy   Patent Review   He was responsible for the intercooled gas turbine patent review for ships
1999 to 2000   US Navy   Combustor Design   He was responsible for the design of a new combustor for the China Lake test facility. The new combustor was for Mach 5 to 8 simulation.
2001 to 2002   Air Force   Combustor Design   He was responsible for the new APTU combustor for AEDC at Tulahoma Tenn.

Consulting Services:
Selected Consulting Examples:
  • He has developed effective acoustic damping techniques ( reduced noise in 8-FT HTT from 70 psi at 30 HZ to 0.5 psia at 360 Hz.- now the quietest combustor in the world for its size
  • He has designed and tested , and now in service, Super Ignitor for 8-FT HTT . Uses rich pilot flame ( REQ=3) to stabilize and ignite large jet of methane at near sonic conditions
  • He has designed a development facility. In this facility, he designed a number of unique designs and tested : i. The modified Lewis design for use as ignitor ii. The mini-max SUE annular combustor iii. A swirl stabilized combustor iv. A ring type fuel injector v. A modified ring type injector vi. A lifted flame ring injector ( no cooling needed) vii. A lifted flame paired airfoil injector able to operate at 5000 R and 2000 psia without cooling.
  • He lead the installion of 84 SUE combustors ( 52 foot diameter plenum ) in the 9 X6 Wind Tunnel . Temperature =2500 R and Poc=200 psia . Used to test Army and Air Force tactical missiles at q of up to 5000 psf . Flow rates of up to 5000 lb./s of which 60% went through combustors. The SAM-D ( now the Patriot was developed here ) ; the improved Hawk ;the use of fused silica as radomes ; radomes for rain and ice also developed here
  • He was responsible ( with team) for the redesign of the Mixer for Aerojet for the Hypersonic Test facility
Recent Client Requests:
  • Expert for consulting on intrinsically safe motor.
  • Expert in Carbonization of Wood for consulting on Wood carbonizing.
  • Impeller expert for consulting on combustor design in a 5 in. dia centrifuge jet engine.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
He was asked to review a Patent for the Navy for an intercooler for a large gas turbine for ships.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Country / Region   Summary
Peru ( Marco Egoavil)   Compañía Minera Agregados Calcáreos Lima, Peru • Main responsibility was the design, installation and testing of conveyors, ball mills, roller mills, elevator, crushers, mechanical classifiers, fans and a vertical lime kiln.

Language Skills:
Foreign Language   Description
Spanish   The expert was born in Peru and lived there until 1963.

Additional Skills and Services:

He gave a short course on wind tunnel testing at Mach 7

Supplier and Vendor Location and Selection

He is familiar with most of the wind tunnels and their use. He is also knowledgeable in IR and acoustic equipment.

Other Skills and Services

The expert has extensive experience in combustor design through checkout for NASA and DOD. The expert can provide requirements definition, mechanical design and drawings, mechanical/structural analysis including finite element analysis, flow and thermal analysis, process systems, controls, project and construction management, and final checkout of the facility. Some of the software used is listed below.

Pro-Engineer: Solid model design and drafting Nastran: Finite element analysis (FEA) static/dynamic/thermal FEMAP: FEA graphics pre and post processor MathCad: Mathematics Fluent/Gambit: 3D Computational fluid dynamics Adobe Acrobat: Documentation TEP : Gas Properties, reactions, expansions, etc.

PBG Engineering will team with Riggins Company for fabrication, delivery, and assembly of a combustor. Riggins has extensive experience in pressure vessel fabrication as well as combustor internal components and can provide a U1 or U2 pressure vessel stamp.

A concurrent engineering Management Plan will be used for all projects. Long lead components will have to be started before final design is complete, providing just-in-time updates to the fabricator. This will require regular and timely distribution of funds. The deliverables will include regular status reports, an assembled and tested combustor, a requirements and analysis report, and as built drawings.


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