Patents by Inventor Philippe A. Rollet

Philippe A. Rollet 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: 5388785
    Abstract: A helicopter comprising: a single main rotor for forwards motion and for support; and an anti-torque system comprising: an auxiliary, anti-torque rotor rotated from the engine means of said main rotor and exerting controllable anti-torque lateral thrust; and at least one steering airfoil that is controllable in steering and that generates anti-torque transverse lift. According to the invention, the helicopter includes automatic swivel control means for automatically controlling the swivel angle of said steering airfoil as a function of the collective pitch angle of said main rotor and of the forward speed of said helicopter.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: February 14, 1995
    Assignee: Societe Anonyme dite: Eurocopter France
    Inventors: Philippe A. Rollet, Paul G. Eglin
  • Patent number: 4809931
    Abstract: A directional and stabilizing device is provided including a faired antitorque rotor, driven in rotation in a transverse aperture formed in a fairing slanted with respect to the vertical by an angle between 0.degree. and 45.degree.. It also includes a "V" empennage fixed to the top of the fairing and the two aerodynamic surfaces of which extend disymmetrically with respect to the vertical plane passing through the top of this fairing, the aerodynamic surfaces being slanted in angular planes between 0.degree. and 45.degree..
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: March 7, 1989
    Assignee: Aerospatiale, Societe Nationale Industrielle
    Inventors: Rene L. Mouille, Philippe A. Rollet