Patents Assigned to Aeronautic Development Corp. Ltd.
  • Quiet nacelle system and hush kit
    Patent number: 4817756
    Abstract: A quiet nacelle system for jet aircraft engines includes a nose cowl and nose dome having a sound-attenuating liner, a concentric ring between the nose cowl and nose dome, and fan duct components having a sound-attenuating liner. The system is particularly suitable for JT3D-3B and JT3D-7 engines for use with DC-8 aircraft. The components may be combined as a hush kit for retrofit in existing nacelle systems.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: April 4, 1989
    Assignee: Aeronautic Development Corp. Ltd.
    Inventors: Thomas W. Carr, Philip M. Rose, Alan H. Marsh