Patents by Inventor Jeremy Astley

Jeremy Astley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Acoustic liner for gas turbine engine
    Patent number: 7124856
    Abstract: A passive acoustic liner system (50) for attenuating a sound field comprising, in acoustic series, a mode-scattering segment (48) and a sound-absorbing segment (40), wherein the mode scattering segment (48) provides a reactance between ?12 and ?2 ?c and the sound absorbing segment (40) provides a reactance between ?1 and 0 ?c thereby providing a reactance discontinuity such that mode-scattering of the sound field enables the sound-absorbing segment (48) to further absorb the scattered sound.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: October 24, 2006
    Assignee: Rolls-Royce plc
    Inventors: Andrew J Kempton, Nicholas J Baker, Alan McAlpine, Jeremy Astley
  • Acoustic liner for gas turbine engine
    Publication number: 20060011408
    Abstract: A passive acoustic liner system (50) for attenuating a sound field comprising, in acoustic series, a mode-scattering segment (48) and a sound-absorbing segment (40), wherein the mode scattering segment (48) provides a reactance between ?12 and ?2 ?c and the sound absorbing segment (40) provides a reactance between ?1 and 0 ?c thereby providing a reactance discontinuity such that mode-scattering of the sound field enables the sound-absorbing segment (48) to further absorb the scattered sound.
    Type: Application
    Filed: September 30, 2003
    Publication date: January 19, 2006
    Inventors: Andrew Kempton, Nicholas Baker, Alan McAlpine, Jeremy Astley