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University of Hartford

200 Bloomfield Ave

Harry Jack Gray Center, 1877 Club

West Hartford, CT 06117

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Learn Airfoil Modeling and Metrology!

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University of Hartford

College of Engineering, Technology & Architecture

200 Bloomfield Avenue

West Hartford, Connecticut 06117

Certificate in Fundamentals of Airfoils


Course Duration: 2 days (16 hours) Course Hours: 8:00 AM – 5:00 PM

Course Dates: Oct. 23 – 24, 2019 Course Cost: $795 per student

Course Registration: https://www.eventbrite.com/e/certificate-in-fundamentals-of-airfoils-tickets-72693671729

Location: Lecture portion in Harry Jack Gray Center, Room C; and hands-on lab activity in Dana Hall Room 102, Center for Manufacturing and Metrology, University of Hartford

Program Coordination and Contact Information:

University of Hartford: Professor Chittaranjan Sahay, Ph.D., PE, C.Mfg. E., Phone: (860) 768-4852 Email: sahay@hartford.edu

Pratt & Whitney: Pete Teti, PPV Fellow, Phone: (860) 557-4770, Email: peter.teti@pw.utc.com


Jeff Lancaster (Retired PWA Airfoil Technical Fellow)

William Cousins, Ph.D. (United Technologies Research Center Technical Fellow)

University of Hartford Professor of Mechanical Engineering, Dr. Chittaranjan Sahay

University of Hartford Professor of Mechanical Engineering, Dr. Suhash Ghosh


Course slides supplied by University of Hartford


PW Certificate Course on Fundamentals of Manufacturing Metrology or Familiarity with the course contents


 Engineers, Technicians, CMM/Light Programmers:

 Mechanical Design/Product Definition

 Aerodynamics

 Metrology

 Structures & Dynamics

 Manufacturing

 Quality Assurance/Metrology


Airfoil Modeling & Metrology involves a wide range of technologies & challenges. The need for faster and more accurate “in process” and “final acceptance” measurement data has seen the emergence of many new 3D Model based technologies such as CMM scanning & Structured Light.

Historically, airfoil surfaces have been defined and analyzed as a collection of airfoil sections comprised of ordered X, Y and Z coordinates.

Many of the current structural & aerodynamic codes used at engine OEMs are still based on the analysis of planar, conical, or streamline airfoil sections. In addition, many of the processes & procedures used at airfoil supplier sites remain “section based.” This course focuses on the (still relevant) use of airfoil section based techniques & analyses while, at the same time, showing how they complement the transition to the next generation process.

This two-day program will start off by covering the fundamentals of airfoils including geometry and the influence of its function. In addition to current airfoil based techniques, the course will also provide an overview of the next generation process (currently being transitioned to) focusing on the use of 3D Model based measurement, functional analysis codes, and multi-variant & principal component statistical analysis. The second day of the course will provide the student with some hands-on experience using CMM dimensional and geometrical inspection techniques.


Part I: Airfoil Section/Surface Definition Basics

Background & Airfoil Surface Terms and Definitions

Common Airfoil Examples & Manufacturing Technologies

Airfoil Section Definition using Ordered X,Y,Z Coordinates

The Standard Airfoil Coordinate System

Various Section Definition Forms (Planar, Conical, etc.), Concept of “Hot-to-Cold” Airfoil Stacking, Sign Conventions, & 6-Point Nesting

The 4 Basic Airfoil Types (Compressor Blade/Vane & Turbine Blade/Vane)

Airfoil Section Parameters (Algorithm Dependent & Independent)

Typical Airfoil Computerized Product Definition (CPD) Provided by Engine OEMs

Part II: Basics of Airfoil Measurement Analysis

Measurement Technologies, Major Software Modules, the Next Generation Process, the Concept of “Cold-to-Hot” Conversion

Integration of Process Capability, CPD Requirements, and Engine Physics

Basics of Process Capability

Unordered vs. Ordered Coordinates

Important CMM Considerations

Major Software Modules Required

Examples of Current Airfoil Section Analysis

Concept of Section Best Fitting

Algorithm Dependent vs Algorithm Independent Parameters

Examples of Current Univariate Reporting

Example of “Quasi-Functional” Assessment

Key Characteristics of the Next Generation Process (Simple Multi-variant & Principal Component Analysis examples)

Part III- Lab work

Touch and Laser Scanning with CMM


Jeff Lancaster – Mr. Lancaster is a consultant to the Aerospace Component Manufacturers and other aerospace companies. He is a retired Pratt & Whitney Technical Fellow and while at P&W he led the Development & Implementation of the Unified System of Airfoils (USA) as well as the Implementation of the PWAirfoil Measurement Analysis System both at PWA and throughout its entire airfoil supplier base. Jeff received his B.S. in Aerospace Engineering from the University of Texas at Austin as well as M.S. Degrees in Engineering & Business Management from Rensselaer Polytechnic Institute, Troy, NY.

William Cousins, Ph.D. – Dr. Cousins is a Technical Fellow at United Technologies Research Center (UTRC), where he ensures the highest standards of technical excellence in turbomachinery design tools and testing methods are available to identify and realize business opportunities that will advance the innovation mission of UTRC. Specifically, Cousins provides leadership in project execution, technical direction, identification of strategic opportunities, leveraging of external relationships and staff technical guidance and mentoring. An active member of the Society of Automotive Engineers (SAE) International, Cousins is an Associate Fellow of American Institute of Aeronautics and Astronautics (AIAA) and a Life Fellow of the American Society of Mechanical Engineers (ASME) and has sat on the Board of Governors of the ASME. Dr. Cousins earned B.S., M.S. and Ph.D. degrees in mechanical engineering from Virginia Tech with extensive concentration in fluid mechanics and turbomachinery design, operability and stability.

Chittaranjan Sahay, Ph.D. – Dr. Sahay is the Vernon D. Roosa Professor of Manufacturing Engineering and serves as the Director of the Center for Manufacturing and Metrology at the University of Hartford. He also leads the Metrology Certificate Program. Dr. Sahay holds a doctorate degree in Machining from the Indian Institute of Technology, Delhi.

Suhash Ghosh, Ph.D. – Dr. Ghosh is an Associate Professor in Mechanical Engineering and the Associate Director for the Center for Manufacturing and Metrology. He has taught many courses in Metrology and specializes in Geometric Dimensioning and Tolerancing (GD&T). Dr. Ghosh holds a doctorate in mechanical engineering from the Missouri University of Science and Technology.

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University of Hartford

200 Bloomfield Ave

Harry Jack Gray Center, 1877 Club

West Hartford, CT 06117

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Eventbrite's fee is nonrefundable.

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