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Variable Fuel Placement Injector Development

  • Kevin Brundish
  • M. N. Miller
  • L. C. Morgan
  • A. J. Wheatley
Conference paper
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

The operational uncertainty of lean premixed prevaporized technology coupled with the weight and complexity penalties associated with double annular aerocombustors has led to the emergence of the single annular, lean-burn variable fuel placement fuel injector. QinetiQ, in partnership with Smiths Aerospace, are involved in the development of an in-burner-staged airblast fuel injector, which produces two autonomous recirculation zones allowing for low NOx control over a wide turndown range. Various prototype fuel injectors have been tested in an angled effusion cooled combustor liner at up to 13 bar and 900 K. An idle power efficiency of over 99.5% was achieved with less than 10 EINOx at scaled climb-out power. In addition, smoke numbers were consistently below 5 SAE, although further optimization for idle blow-out stability and traverse quality is required.

Keywords

Nitric Oxide Recirculation Zone Fuel Injector Fuel Flow Main Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2007

Authors and Affiliations

  • Kevin Brundish
    • 1
  • M. N. Miller
    • 1
  • L. C. Morgan
    • 2
  • A. J. Wheatley
    • 2
  1. 1.Energy & Materials CentreQinetiQ, Cody Technology ParkFarnboroughUK
  2. 2.Smiths Aerospace Components Burnley Ltd.UK

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