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Laser initiated non-linear fuel droplet ignition

  • US 5,404,712 A
  • Filed: 10/06/1992
  • Issued: 04/11/1995
  • Est. Priority Date: 10/06/1992
  • Status: Expired due to Fees
First Claim
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1. Apparatus for igniting an air/fuel spray comprised of fuel droplets, the air/fuel spray being provided within a combustion chamber of a gas turbine engine, the apparatus comprising:

  • coherent optical source means that includes means for introducing at least one pulse of coherent radiation into the air/fuel spray, the pulse initiating a development of a plasma within the air/fuel spray;

    means for maintaining the pulse of coherent radiation for pumping the plasma; and

    means for terminating the pulse of coherent radiation at a time after the plasma has reached a predetermined energy that results in the plasma being self-sustained, and before a time that an ignition of the air/fuel spray occurs, the ignition using ignition precursors that are created from the self-sustained plasma after the termination of the pulse.

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