Energy Management - Introduction and Practical Applications

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  • The fighter community worldwide: dogfighting to win
  • Sport Aviation, Vol 60, No. 6, June 2011.
  • NASA – Shuttle re-entry profile is all about energy management! “Terminal Area Energy Management”
  • Air Carrier community; to optimize operating efficiencies
  • Gliders – lift and performance efficiencies, variometer instrument
  • Here, Potential Energy is Gravitational Potential Energy. Not considered for this discussion: Chemical potential energy.
  • Ref: old Flight Training Handbook c1980, Chap 17.
  • Diet industry always says: Your actual results may vary! What if your glide conditions aren’t the same as the ones in the chart? For example: GW < MGW: fly a slower speed for the optimum AOA; Gear down: Adds parasitic drag; fly a slower speed for optimum AOA. Headwinds: Need to fly faster than no-wind glide speed. Kinetic Energy reserve: Need to fly faster than no-wind glide speed.
  • © 1944! Discusses technical aspects of flying without burdening reader with incomprehensible formulae.
  • Note touchdown tolerance: -0/+200. No mention of speed or aiming point, or adjustments. That is supposed to be covered in the reference.
  • Energy Management - Introduction and Practical Applications

    1. 1. Presented to:By:Date:Federal AviationAdministrationEnergyManagementIntroductionAndPractical ApplicationsCFI SeminarBob Jex, ASI5 Jan 2013
    2. 2. Federal AviationAdministration2Energy Management – Intro & Practical App’s5 Jan 2013Overview• What is Energy Management?• Who uses Energy Management?• Why GA community needs it• Types of energy we manage in flight• Practical applications:– Power Table– Power-Off 180 planning
    3. 3. Federal AviationAdministration3Energy Management – Intro & Practical App’s5 Jan 2013Disclaimer• This presentation does not change currentFAA policies or regulations• Objectives are to:– Introduce a new concept– Expand your thinking, generate discussion– Give you tools you can use immediately– Most importantly: Prevent accidents!
    4. 4. Federal AviationAdministration4Energy Management – Intro & Practical App’s5 Jan 2013What is EnergyManagement?(Not THIS kind!)
    5. 5. Federal AviationAdministration5Energy Management – Intro & Practical App’s5 Jan 2013Who usesEnergy Management?
    6. 6. Federal AviationAdministration6Energy Management – Intro & Practical App’s5 Jan 2013Fighters use Energy Management!
    7. 7. Federal AviationAdministration7Energy Management – Intro & Practical App’s5 Jan 2013Airshow performers use it!
    8. 8. Federal AviationAdministration8Energy Management – Intro & Practical App’s5 Jan 2013NASA uses Energy Management!
    9. 9. Federal AviationAdministration9Energy Management – Intro & Practical App’s5 Jan 2013Airliners use Energy Management!
    10. 10. Federal AviationAdministration10Energy Management – Intro & Practical App’s5 Jan 2013Gliders use Energy Management!
    11. 11. Federal AviationAdministration11Energy Management – Intro & Practical App’s5 Jan 2013Why GA needs Energy Management• Leading Flight Training accident &incident causes:– Stall / Spin– Loss of control on landing• Many are due to mismanaged energy!
    12. 12. Federal AviationAdministration12Energy Management – Intro & Practical App’s5 Jan 2013Goals of Energy Management in GA• Efficient flying• Develop kinesthetic sense in pilots• Reduce accidents in leading areas
    13. 13. Federal AviationAdministration13Energy Management – Intro & Practical App’s5 Jan 2013Types of energy:• Kinetic– Airspeed!• Potential– Altitude!• Total = Kinetic + Potential• “Energy Bowl” concept
    14. 14. Federal AviationAdministration14Energy Management – Intro & Practical App’s5 Jan 2013Two practical applications• Power Table• Power-Off 180 planning
    15. 15. Federal AviationAdministration15Energy Management – Intro & Practical App’s5 Jan 2013PowerTablePower Table:_____________________(Model)Profile Pitch Power A/S VSI RemarksVy FullVx FullCruiseClimb75%Cruise65%0Holding 0< 3 min tilfix-500 fpm;Clean -500Init Segm’t;Vec. FinalS & L;Apch Flaps;Gear up0Intermed.SegmentILS Final:Apch Flaps;Gear downOn GSRe-trim as necessary after any profile change.Notes:
    16. 16. Federal AviationAdministration16Energy Management – Intro & Practical App’s5 Jan 2013Power-Off 180 Approach & Landing• Commercial ASE proficiency maneuver• Typically flown in complex singles• Develops skills for engine-out approach• Described in AFH, Chapter 8
    17. 17. Federal AviationAdministration17Energy Management – Intro & Practical App’s5 Jan 2013AeroReview“Bucketpoint”
    18. 18. Federal AviationAdministration18Energy Management – Intro & Practical App’s5 Jan 2013Glide Performance (Complex ASEL)CheckAssoc’dCond’ns
    19. 19. Federal AviationAdministration19Energy Management – Intro & Practical App’s5 Jan 2013Excellent reference (since 1944)!Check it out:Chapter 14:The Glide
    20. 20. Federal AviationAdministration20Energy Management – Intro & Practical App’s5 Jan 2013Re-visit the drag curve -“Back-Wall”scenario“Front-Wall”scenario
    21. 21. Federal AviationAdministration21Energy Management – Intro & Practical App’s5 Jan 2013Review of two key landing terms:• Aiming point• Specified Touchdown point• They are not the same!
    22. 22. Federal AviationAdministration22Energy Management – Intro & Practical App’s5 Jan 2013PTS:
    23. 23. Federal AviationAdministration23Energy Management – Intro & Practical App’s5 Jan 2013Review: Energy Management• Other communities already use it• Foremost flight training accident causes• Two basic types of energy to manage– Kinetic– Potential• Power Table• Power-Off 180 planning
    24. 24. Federal AviationAdministration24Energy Management – Intro & Practical App’s5 Jan 2013Questions?Bob Jex, ASIOrlando FSDO407-812-7727Robert.jex@faa.gov

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