Patents by Inventor Duncan A. S. MacDougall

Duncan A. S. MacDougall 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).

  • Characterisation of soft body impacts
    Patent number: 8280704
    Abstract: The fragmentation of a bird or similar soft body, following its impact on an angled target plate, is modeled by representing the body as a combination of fragments and slurry, their relative proportions depending on the severity and angle of impact. The method is particularly suitable for modeling the behavior of a bird striking an obscuring intake of a gas turbine engine.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: October 2, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Daniel N S Clark, Duncan A S Macdougall, Julian M Reed
  • Projectile for simulating multiple ballistic impacts
    Patent number: 8047136
    Abstract: A projectile is provided for simulating multiple sequential ballistic impacts. The projectile has a plurality of relatively dense loading layers spaced along the firing direction of the projectile. Each pair of nearest-neighbor loading layers is separated by a less dense support element which maintains the spacing of the loading layers. The projectile may be suitable for simulating bird slurry impacts on stator vanes of an aero gas turbine engine.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: November 1, 2011
    Assignee: Rolls-Royce plc
    Inventors: Duncan A. S. MacDougall, David Higginbottom
  • Characterisation of soft body impacts
    Publication number: 20110178780
    Abstract: The fragmentation of a bird or similar soft body, following its impact on an angled target plate, is modelled by representing the body as a combination of fragments and slurry, their relative proportions depending on the severity and angle of impact. The method is particularly suitable for modelling the behaviour of a bird striking an obscuring intake of a gas turbine engine.
    Type: Application
    Filed: March 26, 2009
    Publication date: July 21, 2011
    Applicant: ROLLS-ROYCE PLC
    Inventors: Daniel N S Clark, Duncan A S Macdougall, Julian M. Reed
  • Projectile for simulating multiple ballistic impacts
    Publication number: 20090320710
    Abstract: A projectile is provided for simulating multiple sequential ballistic impacts. The projectile has a plurality of relatively dense loading layers spaced along the firing direction of the projectile. Each pair of nearest-neighbour loading layers is separated by a less dense support element which maintains the spacing of the loading layers. The projectile may be suitable for simulating bird slurry impacts on stator vanes of an aero gas turbine engine.
    Type: Application
    Filed: May 7, 2009
    Publication date: December 31, 2009
    Applicant: ROLLS-ROYCE PLC
    Inventors: Duncan A.S. MacDougall, David Higginbottom