Patents by Inventor Francoise J. Morelli

Francoise J. Morelli 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).

  • Tail rotor arrangement with increased thrust for rotary wing aircraft and device for increasing the thrust of such an arrangement
    Patent number: 4585391
    Abstract: A tail rotor arrangement for rotary wing aircraft, comprising a tunnel of axis X--X transverse with respect to the aircraft and in which is disposed a multi-blade rotor coaxial with respect to the tunnel and generating a transverse air flow. The arrangement comprises a plurality of fixed blades disposed inside of the tunnel downstream of the rotor with respect to the air flow and arranged in at least substantially radial manner with respect to the tunnel in order to be able to recover, in the form of an axial thrust, the energy of rotation of the air flow at the outlet of the rotor. The tail rotor arrangement provides an increase in thrust of the rotors, particularly paired rotors.
    Type: Grant
    Filed: September 27, 1983
    Date of Patent: April 29, 1986
    Assignee: Societe Nationale Industrielle et Aerospatiale
    Inventors: Alain Vuillet, Francoise J. Morelli