Patents by Inventor David J. Tudor

David J. Tudor 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).

  • Patent number: 7946825
    Abstract: A fan blade is provided having a root portion and an aerofoil portion that has a leading edge, a trailing edge and a tip remote from the root portion. A concave pressure surface extends from the leading edge to the trailing edge and a convex suction surface extends from the leading edge to the trailing edge. A portion of the tip of the aerofoil portion between the leading edge and the trailing edge of the aerofoil portion is thinner than the remainder of the tip. The portion of the tip of the aerofoil portion is spaced from the leading edge and is spaced from the trailing edge. The portion of the tip of the aerofoil portion has a recess arranged on the concave pressure surface such that the portion of the tip of the aerofoil portion is thinner than the remainder of the tip.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: May 24, 2011
    Assignee: Rolls-Royce, plc
    Inventor: David J Tudor
  • Publication number: 20100014984
    Abstract: A fan blade comprises a root portion and an aerofoil portion. The aerofoil portion has a leading edge, a trailing edge and a tip remote from the root portion. A concave pressure surface extends from the leading edge to the trailing edge and a convex suction surface extends from the leading edge to the trailing edge. A portion of the tip of the aerofoil portion between the leading edge and the trailing edge of the aerofoil portion is thinner than the remainder of the tip. The portion of the tip of the aerofoil portion is spaced from the leading edge and is spaced from the trailing edge. The portion of the tip of the aerofoil portion has a recess such that the portion of the tip of the aerofoil portion is thinner than the remainder of the tip. The recess is arranged on the concave pressure surface of the aerofoil portion. This reduces vibrations of the fan blade.
    Type: Application
    Filed: September 24, 2009
    Publication date: January 21, 2010
    Applicant: ROLLS-ROYCE PLC
    Inventor: David J. Tudor
  • Patent number: 7645121
    Abstract: A fan rotor arrangement comprises a fan rotor (24) and a plurality of fan blades (26). Each fan blade (26) comprises a root portion (36) and an aerofoil portion (38). Each aerofoil portion (38) has a leading edge (44), a trailing edge (46) and a tip (48). Concave pressure surface (50) and convex suction surface (52) extend from the leading edge (44) to the trailing edge (46) of each aerofoil portion (38). An annular wall (54) surrounds the fan rotor (24) and fan blades (26) and an inner surface (56) of the annular wall (54) has a circumferentially extending groove (58). The circumferentially extending groove (58) is arranged axially, or chordally, between the leading edges (44) and the trailing edges (46) at the tips (48) of the aerofoil portions (38) of the fan blades (26).
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: January 12, 2010
    Assignee: Rolls Royce PLC
    Inventor: David J. Tudor
  • Publication number: 20070160459
    Abstract: A fan rotor arrangement comprises a fan rotor (24) and a plurality of fan blades (26). Each fan blade (26) comprises a root portion (36) and an aerofoil portion (38). Each aerofoil portion (38) has a leading edge (44), a trailing edge (46) and a tip (48). Concave pressure surface (50) and convex suction surface (52) extend from the leading edge (44) to the trailing edge (46) of each aerofoil portion (38). An annular wall (54) surrounds the fan rotor (24) and fan blades (26) and an inner surface (56) of the annular wall (54) has a circumferentially extending groove (58). The circumferentially extending groove (58) is arranged axially, or chordally, between the leading edges (44) and the trailing edges (46) at the tips (48) of the aerofoil portions (38) of the fan blades (26).
    Type: Application
    Filed: December 19, 2006
    Publication date: July 12, 2007
    Applicant: ROLLS-ROYCE PLC
    Inventor: David J. Tudor