Patents by Inventor Henry C. Danielson

Henry C. Danielson 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).

  • Circulation controlled rotary wing aircraft and control system therefor
    Patent number: 3990811
    Abstract: A control system for rotary wing aircraft having a circulation controlled tor is provided. Two axial flow air compressors driven from the engine input shaft provide an air flow which is ducted to the rotor blades through a bifurcated duct and a non-rotating air plenum and released through spanwise slots in the blades. Damping is accomplished by a conically shaped diverter valve in the air plenum and a butterfly valve adjacent the air compressors. Aircraft stability is achieved through a gyro coupled to the rotor shaft which integrates pilot controlled input with rotor cyclic flap moment input.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: November 9, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Henry C. Danielson