Patents by Inventor Roland R. Barnes

Roland R. Barnes 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).

  • Turbofan flow path trenches
    Patent number: 8834129
    Abstract: An integrally bladed disk includes a rotor disk and circumferentially spaced first and second blades. The rotor disk has a rim the periphery of which forms a flow surface. The first and second blades extend integrally outward from the rim. The rim defines a trench in the flow surface between the first and second blades aft of a leading edge of the rim. The trench extends axially forward and rearward of a leading edge of the first blade.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 16, 2014
    Assignee: United Technologies Corporation
    Inventors: Roland R. Barnes, Cagdas Yilmaz
  • Gas turbine engine rotor sections held together by tie shaft, and with blade rim undercut
    Patent number: 8459943
    Abstract: An integrally bladed rotor is utilized in at least a stage of one of a compressor and turbine section. Airfoils extend radially outwardly from a platform, and there is an undercut inward from the platform at a downstream edge of the airfoil.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: June 11, 2013
    Assignee: United Technologies Corporation
    Inventors: Peter Schutte, Daniel Benjamin, Roland R. Barnes
  • Turbofan flow path trenches
    Patent number: 8403645
    Abstract: An integrally bladed disk includes a rim and blades. The blades are circumferentially spaced and extend integrally outward from the rim to define a flow path therebetween. The periphery of the rim forms a flow surface and includes a trench that is disposed adjacent the blades.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: March 26, 2013
    Assignee: United Technologies Corporation
    Inventors: Roland R. Barnes, Cagdas Yilmaz
  • GAS TURBINE ENGINE ROTOR SECTIONS HELD TOGETHER BY TIE SHAFT, AND WITH BLADE RIM UNDERCUT
    Publication number: 20110223025
    Abstract: An integrally bladed rotor is utilized in at least a stage of one of a compressor and turbine section. Airfoils extend radially outwardly from a platform, and there is an undercut inward from the platform at a downstream edge of the airfoil.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 15, 2011
    Inventors: Peter Schutte, Daniel Benjamin, Roland R. Barnes
  • COMPRESSOR SECTION WITH TIE SHAFT COUPLING AND CANTILEVER MOUNTED VANES
    Publication number: 20110219784
    Abstract: A compressor section to be mounted in a gas turbine engine has a plurality of compressor rotors arranged from an upstream location toward a downstream location. A tie shaft applies an axial force at one end of the compressor section to a downstream one of the compressor rotors, and biases the compressor rotors against a hub at the opposite end. Vane sections are mounted intermediate the compressor rotors. The vane sections include at least some variable vanes driven by actuators mounted at a radially outer position and at least some of the fixed vanes are cantilever mounted , such that they are spaced from a compressor rotor, but unsecured at a radially inner end.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 15, 2011
    Inventors: Christopher St. Mary, Roland R. Barnes, Carl S. Richardson, Daniel Benjamin
  • TURBOFAN FLOW PATH TRENCHES
    Publication number: 20110064580
    Abstract: An integrally bladed disk includes a rim and blades. The blades are circumferentially spaced and extend integrally outward from the rim to define a flow path therebetween. The periphery of the rim forms a flow surface and includes a trench that is disposed adjacent the blades.
    Type: Application
    Filed: September 16, 2009
    Publication date: March 17, 2011
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Roland R. Barnes, Cagdas Yilmaz