Integrated Performance Assessment of Boundary Layer Ingesting Aircraft and Highly Integrated Propulsion Concepts 17 August - 18 August 2019 JW Marriott, Indianapolis, Indiana

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Registration Options:
  • Conference Rate: $700
  • Early Member Rate: $500
  • Standard Member Rate: $600

Synopsis

As demands on aircraft efficiency continue to increase, there is a shift toward tightly integrated airframe propulsion configurations. The efficacy of such configurations needs to be assessed as a whole because the performance of the airframe and propulsion systems is no longer divisible into, and related to, components of thrust and drag. This poses new challenges for assessing aircraft performance, where the aerodynamics of the two subsystems are now inherently intertwined. This course addresses those challenges by considering various near field, far field and energy methods available, which may be used to obtain and decompose the net forces acting on the aircraft as a whole. The course also explores how aerodynamics at various levels of fidelity may be incorporated within an overall aircraft performance assessment across the mission profile. Supplementary tutorial sessions combine demonstrative material from CFD solutions to more top-level aircraft performance tools, thereby enhancing learning through interactivity. 

Key Topics

  •  Fundamental understanding of the boundary layer ingestion concept and rationale behind potential benefits
  • A review of conventional thrust/drag bookkeeping, along with concepts of propulsive efficiency, and the questionable validity for tightly integrated airframe-propulsion systems. 
  • Formulation of alternate, boundary layer ingestion appropriate, thrust/force definitions from first principles of momentum conservation
  • Introduction to full-aircraft aerodynamic performance assessments from energy conservation first principles
  • Multi-physics and multi-fidelity approach to aerodynamic force estimation and decomposition
  • Concept performance analysis, from system- to mission-level assessments – an integrated approach
 

Who Should Attend

The course is oriented toward future projects and innovation teams, CFD users, aerodynamicists and airframe-propulsion integration engineers as well as aircraft and propulsion performance specialists within the industry, government, and academia who are seeking consistent and rigorous methods for assessing the feasibility of boundary layer ingestion. 

Outline
  1. Introduction
    1. Challenges of improved propulsive and aerodynamic performance
    2. Boundary Layer Ingestion (BLI) concept, where’s the benefit?
    3. Aircraft configurations and architectures
  2. Force Bookkeeping for Tightly Integrated Airframe Propulsion Systems
    1. Conventional thrust/drag bookkeeping and propulsive efficiency
    2. Challenges of conventional definitions for analyzing BLI configurations
    3. Introduction to control volumes and momentum conservation
    4. Thrust/force definitions appropriate to BLI analysis
  3. Design Variables of BLI Propulsion
    1. Selecting optimum thrust split and fan pressure ratio 
    2. Effect of axial position of BLI propulsor and amount of boundary layer ingested
    3. Note on distortion 
  4. Performance Evaluation of Boundary Layer Ingestion Including Aircraft-Mission-Level Analysis
    1. Performance assessment metrics
    2. Propulsion system-level assessment
    3. Integration of multi-fidelity methods
    4. Mission-level performance assessment
  5. Energy-Based Aerodynamic Assessments of BLI Configurations
    1. Energy equation fundamentals and control volume approach
    2. Net Vehicle Force estimation and breakdowns from energy equation formulations
    3. Flow feature identification and Net Vehicle Force Decompositions for assessing aerodynamic losses
    4. Applied BLI cases, CFD considerations and demonstrations
    5. Integration with system-level performance assessments
  6. Tutorial Sessions
    1. Force/power estimation and decompositions for unpowered and powered configurations. Aircraft-mission-level performance assessments for turbofan-powered thrust-split BLI configurations
  7. Summary, Conclusions and Future Steps
Materials
Course notes will be made available about one week prior to the course event. You will receive an email with detailed instructions on how to access your course notes. Since course notes will not be distributed onsite, AIAA and your course instructor highly recommend that you bring your computer with the course notes already downloaded to the course. 
Instructors

Panos Laskaridis is the Head of the Hybrid Electric Propulsion Group at Cranfield University. He is leading a team of 12 researchers and is working closely with industrial and research organizations on the modelling and performance assessment of highly integrated systems including hybrid-electric, all-electric and boundary layer ingesting propulsion systems. Panos is leading several research projects funded by Rolls-Royce, Airbus, GKN, Lufthansa, the UK Government and others. He has developed and delivered bespoke continuous professional development programs and short courses for several industrial partners including Airbus, GE and Safran. Panos has supervised 26 Ph.D. researchers and 80+ MSc students. He has published more than 60 journal and conference papers. In 2013 he was awarded the Kenneth Harris James Prize from the Institute of Mechanical Engineers in the UK for best journal paper on an aerospace subject published in 2013.  

Drew Sanders  is a Research Engineer within the Centre for Propulsion Engineering at Cranfield University. His research focuses on the modelling, analysis and assessment of boundary layer ingesting propulsion systems and overall aircraft performance. He is currently leading a team of 4 researchers working on various aspects of BLI modelling and integration. Drew is working closely with several industrial partners including Rolls-Royce, Airbus, and GKN. His Ph.D. focused on the assessment of Boundary Layer Ingestion systems and the development of a novel energy-based method. Drew has also extensive experience on aircraft and gas turbine performance modelling and assessment.