Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 725 views

    Thrust Augmentation

    Uploaded by

    Senthamil Arasan
    This document discusses methods of thrust augmentation in gas turbine engines, including water injection and afterburning. Water injection works by increasing the weight of air flowing through the engine, boosting thrust by 10-30%. Afterburning periodically increases thrust by burning additional fuel in the engine exhaust, similar to a ramjet, thereby increasing exit air velocity. It requires high temperature rise, low dry losses, and wide temperature modulation and includes components like fuel pumps, spray nozzles, an ignition system, and a variable area exhaust nozzle.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd

    Thrust Augmentation

    Uploaded by

    Senthamil Arasan
    725 views16 pages
    This document discusses methods of thrust augmentation in gas turbine engines, including water injection and afterburning. Water injection works by increasing the weight of air flowing through the engine, boosting thrust by 10-30%. Afterburning periodically increases thrust by burning additional fuel in the engine exhaust, similar to a ramjet, thereby increasing exit air velocity. It requires high temperature rise, low dry losses, and wide temperature modulation and includes components like fuel pumps, spray nozzles, an ignition system, and a variable area exhaust nozzle.

    Original Description:

    thrust Augmentation ppt; Augmentation

    Original Title

    thrust augmentation

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    PPTX, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document discusses methods of thrust augmentation in gas turbine engines, including water injection and afterburning. Water injection works by increasing the weight of air flowing through the engine, boosting thrust by 10-30%. Afterburning periodically increases thrust by burning additional fuel in the engine exhaust, similar to a ramjet, thereby increasing exit air velocity. It requires high temperature rise, low dry losses, and wide temperature modulation and includes components like fuel pumps, spray nozzles, an ignition system, and a variable area exhaust nozzle.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    725 views16 pages

    Thrust Augmentation

    Uploaded by

    Senthamil Arasan
    This document discusses methods of thrust augmentation in gas turbine engines, including water injection and afterburning. Water injection works by increasing the weight of air flowing through the engine, boosting thrust by 10-30%. Afterburning periodically increases thrust by burning additional fuel in the engine exhaust, similar to a ramjet, thereby increasing exit air velocity. It requires high temperature rise, low dry losses, and wide temperature modulation and includes components like fuel pumps, spray nozzles, an ignition system, and a variable area exhaust nozzle.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 16

    THRUST AUGMENTATION

    AIM
    Aim of this presentation is give a brief introduction about the thrust augmentation in gas turbine engines.

    What is thrust augmentation?


    3

    Theory
    T
    =

    2 1

    T = Thrust w = Weight per unit time of air flow 2 = Exhaust Air speed 1 = Inlet Air Speed

    Methods of thrust augmentation


    Water Injection After Burning Air Bleed off

    Water Injection
    Done by increasing weight of air flow passing through engine. Boosted 10% - 30% of thrust Mixture of De mineral water and Alcohol

    Place of the Water Injection


    Front of the Compressor Added to the Diffuser

    and are the causes to increase fuel flow.

    Disadvantages very heavy Thermal shock to the engine Compressor blade can be effect on erosion. Generally water air ratios are 1-5 lbs. of water to 100 lbs. of air.

    AFTERBURNING

    Use in Turbo Jets and Turbo fan engine types. Periodically increase in thrust. Much similar to Ramjet operation Principle of Afterburning is increasing exit air velocity.

    Cooperated with variable area exhaust nozzles.

    10

    Specific Requirements
    Large Temperature Rise Low Dry Loss Wide Temperature Modulation

    11

    Construction

    12

    Construction cont.
    Afterburner fuel pump Afterburner fuel control Pressurization valve Spray nozzles or Spray bars Ignition system Flame hoders Variable exhaust nozzle Connections Screech liner

    13

    Ignition Systems
    Hot Streak ignition Torch ignition Electric Spark ignition

    14

    Conclusion

    15

    END

    16

    You might also like