Patents by Inventor Rowan Herbert Colley

Rowan Herbert Colley 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).

  • Bypass gas turbine fan employing a stub rotor stage and a main rotor stage
    Patent number: 4055042
    Abstract: A gas turbine engine has a core engine which drives a fan, the fan comprising a main rotor stage and a stub rotor stage whose blades have a smaller radial extent than those of the main rotor stage. The main and stub stages of the fan both compress air to form a main fan airflow and a stub stage airflow respectively, the stub stage airflow being divided into two portions one of which rejoins the main fan airflow and one of which enters the core engine intake. In order to match the flow angles of the various flows, the stub stage has inner and outer outlet guide vanes which give different degrees of deflection to the two component portions of the stub stage airflow.
    Type: Grant
    Filed: July 8, 1976
    Date of Patent: October 25, 1977
    Assignee: Rolls-Royce Limited
    Inventor: Rowan Herbert Colley